SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-K

Annual Report Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934.

For the fiscal year ended December 31, 1998

Commission file number 0-12508

S&T BANCORP, INC.
(Exact name of registrant as specified in its charter)

Pennsylvania                                         25-1434426
(State or other jurisdiction of
incorporation of organization)        (I.R.S. Employer Identification No.)

800 Philadelphia Street,  Indiana, PA                  15701
(Address of principal executive offices)             (Zip Code)

Registrant's telephone number, including area code (724) 349-1800

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act:

Common Stock, Par Value $2.50 per share
(Title of class)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this form 10-K or any amendment to this form 10-K. { }

The aggregate market value of the voting stock held by nonaffiliates of the registrant as of February 26, 1999:

Common Stock, $2.50 par value - $660,439,670

The number of shares outstanding of the issuer's classes of common stock as of February 26, 1999:

Common Stock, $2.50 par value - 27,325,493 shares

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the annual shareholders report for the year ended December 31, 1998 are incorporated by reference into Part II.

Portions of the proxy statement for the annual shareholders meeting to be held April 19, 1999 are incorporated by reference into Part III.

PAGE 1

PART I

Item 1. BUSINESS

General

S&T Bancorp, Inc. ("S&T") was incorporated on March 17, 1983 under the laws of the Commonwealth of Pennsylvania as a bank holding company and has two wholly owned subsidiaries, S&T Bank and S&T Investment Company, Inc. S&T is registered as a bank holding company with the Board of Governors of the Federal Reserve System under the Bank Holding Company Act, as amended.

As of December 31, 1998, S&T had $2.1 billion in total assets, $260 million in total shareholders' equity and $1.4 billion in total deposits. Deposits are insured by the Federal Deposit Insurance Corporation ("FDIC") to the full extent provided by law.

Total trust assets were approximately $649 million at December 31, 1998. Trust services include services as executor and trustee under wills and deeds, and as guardian and custodian of employee benefit trusts.

S&T Bank is a full service bank with its Main Office at 800 Philadelphia Street, Indiana, Pennsylvania, providing service to its customers through a branch network of 38 offices located in Armstrong, Allegheny, Indiana, Jefferson, Clarion, Clearfield and Westmoreland counties.

S&T Bank's services include accepting time and demand deposit accounts, making secured and unsecured commercial and consumer loans, providing letters of credit, and offering discount brokerage services, personal financial planning and credit card services. S&T Bank has a relatively stable deposit base and no material amount of deposits is obtained from a single depositor or group of depositors (including federal, state and local governments). S&T Bank does not experience significant fluctuations in deposits.

Employees

As of December 31, 1998, S&T Bank had a total of 665 full-time equivalent employees. S&T provides a variety of employment benefits and considers its relationship with its employees to be good.

Supervision and Regulation

General

S&T and S&T Bank are each extensively regulated under both federal and state law. The following information describes certain aspects of that regulation applicable to S&T and S&T Bank and does not purport to be complete. To the extent statutory or regulatory provisions or proposals are described, the description is qualified in its entirety by reference to the particular statutory or regulatory provisions or proposals.

S&T

As a bank holding company, S&T is subject to regulation under the Bank Holding Company Act of 1956 ("BHCA") and the examination and reporting requirements of the Federal Reserve Board. Under the BHCA, a bank holding company may not directly or indirectly acquire ownership or control of more than five percent of the voting shares or substantially all of the assets of any additional bank, or merge or consolidate with another bank holding company, without the prior approval of the Federal Reserve Board.

PAGE 2

Item 1. BUSINESS -- Continued

The BHCA also generally limits the activities of a bank holding company to that of banking, managing or controlling banks, or any other activity which is determined to be so closely related to banking or to managing or controlling banks as to be a proper incident thereto. S&T is presently engaged in two nonbanking activities: S&T Investment Company, Inc., which is an investment holding company, and Commonwealth Trust Credit Life Insurance Company ("CTCLIC"). S&T Investment Company, Inc. was formed in June 1988 to hold and manage a group of investments previously owned by S&T Bank and to give S&T additional latitude to pur- chase other investments. CTCLIC, which is a joint venture with another financial institution, acts as a reinsurer of credit life, accident and health insurance policies sold by S&T Bank and the other institution.

There are a number of obligations and restrictions imposed on bank holding companies and their depository institution subsidiaries by federal law and regulatory policy that are designed to reduce potential loss exposure to the depositors of such depository institutions and to the FDIC insurance funds in the event the depository institution becomes in danger of default or in default. For example, under a policy of the Federal Reserve Board with respect to bank holding company operations, a bank holding company is required to serve as a source of financial strength to its subsidiary depository institutions and to commit resources to support such institutions in circumstances where it might not do so otherwise.

S&T Bank

As a state-chartered commercial bank, the deposits of which are insured by the Bank Insurance Fund ("BIF") of the FDIC, S&T Bank is subject to the supervision and regulation of the Pennsylvania Department of Banking ("PADB") and the FDIC. S&T Bank also is subject to various requirements and restrictions under federal and state law, including requirements to maintain reserves against deposits, restrictions on the types, amount and terms and conditions of loans that may be granted, and limits on the type of other activities in which S&T Bank may engage and the investments it may make. Various consumer and compliance laws and regulations also affect S&T Bank's operations.

S&T Bank also is subject to federal laws that limit the amount of transactions between itself and S&T or S&T's nonbank subsidiaries. Under these provisions, transactions by a bank subsidiary to its parent company or any nonbank affiliate generally are limited to 10% of the bank subsidiary's capital and surplus, or 20% in the aggregate. Further, loans and extensions of credit generally are required to be secured by eligible collateral in specified amounts. A bank, such as S&T Bank, is prohibited from purchasing any "low quality" asset from an affiliate. S&T Bank is in compliance with these provisions.

As an FDIC-insured bank, S&T Bank also is subject to FDIC insurance assessments. Currently, the amount of FDIC assessments paid by individual insured depository institutions ranges from zero to $.27 per $100 of insured deposits, based on their relative risk to the deposit insurance funds, as measured by the institutions' regulatory capital position and other supervisory factors. S&T Bank currently pays the lowest premium rate based upon this risk assessment. However, because legislation enacted in 1996 requires that all insured deposits pay a pro rata portion of the interest due on the obligations issued by the Financing Corporation, the FDIC is assessing BIF-insured deposits an additional $.013 per $100 of deposits to cover those obligations.

PAGE 3

Item 1. BUSINESS -- Continued

Capital

The Federal Reserve Board and the FDIC have issued substantially similar risk-based and leverage capital guidelines applicable to banking organizations they supervise. Under the risk-based capital requirements, S&T and S&T Bank each generally is required to maintain a minimum ratio of total capital to risk-weighted assets (including certain off-balance sheet activities, such as standby letters of credit), of eight percent. At least half of the total capital is to be composed of common equity, retained earnings and qualifying perpetual preferred stock, less certain intangibles ("Tier 1 capital"). The remainder may consist of certain subordinated debt, certain hybrid capital instruments and other qualifying preferred stock, and a limited amount of the loan loss allowance ("Tier 2 capital") and, together with Tier 1 capital, ("Total capital"). At December 31, 1998, S&T's Tier 1 and Total capital ratios were 14.18 percent and 17.09 percent, respectively, and the ratios of Tier 1 capital and Total capital to total risk-adjusted assets for S&T Bank were 10.42 percent and 11.68 percent, respectively.

In addition, each of the federal bank regulatory agencies has established minimum leverage capital ratio requirements for banking organizations. These requirements provide for a minimum leverage ratio of Tier 1 capital to adjusted average quarterly assets equal to three percent for bank and bank holding companies that meet certain specified criteria, including that they have the highest regulatory rating and are not experiencing significant growth or expansion. All other banks and bank holding companies will generally be required to maintain a leverage ratio of at least 100 to 200 basis points above the stated minimum. S&T's leverage ratio at December 31, 1998 was 10.68 percent, and S&T Bank's leverage ratio was 7.48 percent.

Both the Federal Reserve Board's and the FDIC's risk-based capital standards explicitly identify concentrations of credit risk and the risk arising from non-traditional activities, as well as an institution's ability to manage these risks, as important factors to be taken into account by the agency in assessing an institution's overall capital adequacy. The capital guidelines also provide that an institution's exposure to a decline in the economic value of its capital due to changes in interest rates be considered by the agency as a factor in evaluating a bank's capital adequacy. The Federal Reserve Board also has recently issued additional capital guidelines for certain bank holding companies that engage in trading activities. S&T does not believe that consideration of these additional factors will affect the regulators' assessment of S&T's or S&T Bank's capital position.

Payment of Dividends

S&T is a legal entity separate and distinct from its banking and other subsidiaries. A major portion of the revenues of S&T result from amounts paid as dividends to S&T by S&T Bank. S&T Bank, in turn, is subject to state laws and regulations that limit the amount of dividends it can pay to S&T. In addition, both S&T and S&T Bank are subject to various general regulatory policies relating to the payment of dividends, including requirements to maintain adequate capital above regulatory minimums. The Federal Reserve Board has indicated that banking organizations should generally pay dividends only if (1) the organization's net income available to common shareholders over the past year has been sufficient to fund fully the dividends and (2) the prospective rate of earnings retention appears consistent with the organization's capital needs, asset quality and overall financial condition. S&T does not expect that any of these laws, regulations or policies will materially impact its ability or the ability of S&T Bank to pay dividends. During the year ended December 31, 1998, S&T Bank paid $17.5 million in cash dividends to S&T.

PAG3 4

Item 1. BUSINESS -- Continued

Other Safety and Soundness Regulations

The federal banking agencies possess broad powers under current federal law to take prompt corrective action to resolve problems of insured depository institutions. The extent of these powers depends upon whether the institution in question is "well capitalized," "adequately capitalized," "undercapital- ized," "significantly undercapitalized," or "critically under- capitalized," as defined by the law. As of December 31, 1998, S&T Bank was classified as "well capitalized." The classific- ation of depository institutions is primarily for the purpose of applying the federal banking agencies' prompt corrective action provisions and is not intended to be, and should not be interpreted as, a representation of overall financial condition or prospects of any financial institution.

The agencies' prompt corrective action powers can include, among other things, requiring an insured depository institution to adopt a capital restoration plan which cannot be approved unless guaranteed by the institution's parent company; placing limits on asset growth and restrictions on activities, including restrictions on transactions with affiliates; restricting the interest rates the institution may pay on deposits; prohibiting the payment of principal or interest on subordinated debt; prohibiting the holding company from making capital distributions without prior regulatory approval and, ultimately, appointing a receiver for the institution. Among other things, only a "well capitalized" depository institution may accept brokered deposits without prior regulatory approval.

The PADB also has broad enforcement powers over S&T Bank, including the power to impose fines and other civil and criminal penalties, and to appoint a conservator or receiver.

Interstate Banking and Branching

The BHCA currently permits bank holding companies from any state to acquire banks and bank holding companies located in any other state, subject to certain conditions, including certain nation-wide and state-imposed concentration limits. Effective June 1, 1997, S&T Bank has the ability, subject to certain restrictions, including state opt-out provisions, to acquire by acquisition or merger, branches of banks located outside of Pennsylvania, its home state. States may affirmatively opt-in to permit these transactions earlier, which Pennsylvania, among other states, has done. The establishment of de novo interstate branches also will be possible in those states that expressly permit it. Once a bank has established branches in a state through an interstate merger transaction, the bank may establish and acquire additional branches at any location in the state where a bank headquartered in that state could have established or acquired branches under applicable federal or state law.

Competition

All phases of S&T Bank's business are highly competitive. S&T Bank's market area is western Pennsylvania, with a represent- ation in Indiana, Armstrong, Allegheny, Jefferson, Clarion, Clearfield and Westmoreland counties. S&T Bank competes with those local commercial banks which have branches and customer calling programs in its market area. S&T Bank considers its major competitors to be First Commonwealth Bank headquartered in Indiana, PA; People's Bank headquartered in Ford City, PA; Indiana First Savings Bank headquartered in Indiana, PA; Clearfield Bank and Trust Company, headquartered in Clearfield, PA and Marion Center National Bank, headquartered in Marion Center, PA. The proximity of Indiana to metropolitan Pittsburgh results in a significant impact on the S&T market because of media influence and penetration by larger financial institutions, such as Mellon Bank, National City Bank and PNC Bank.

PAGE 5

Item 1. BUSINESS -- Continued

Distribution of Assets, Liabilities and Shareholders' Equity; Interest Rates and Interest Differential.

The following discussion and analysis is presented so that shareholders may review in further detail the financial condition and results of operations of S&T. This discussion and analysis should be read in conjunction with the consolidated financial statements, selected financial data and management's discussion and analysis incorporated by reference. References to assets and liabilities and changes thereto represent daily average balances for the periods discussed, unless otherwise noted.

Net interest income represents the difference between the interest and fees earned on interest-earning assets and the interest paid on interest-bearing liabilities. Net interest income is affected by changes in the volume of interest-earning assets and interest-bearing liabilities and changes in interest yields and rates. Interest on loans to and obligations of state, municipal- ities and other public entities is not subject to federal income tax. As such, the stated (pre-tax) yield on these assets is lower than the yields on taxable assets of similar risk and maturity. In order to make the pre-tax income and resultant yields comparable to taxable loans and investments, a taxable equivalent adjustment was added to interest income in the tables below. This adjustment has been calculated using the U.S. federal statutory income tax rate of 35% for 1998, 1997 and 1996. The following table demonstrates the amount that has been added to interest income per the summary of operations.

[CAPTION]

                                                   Year Ended December 31

                                               1998         1997        1996
                                                 (In thousands of dollars)
Interest income per consolidated
   statements of income                     $151,438    $141,101    $132,442
Adjustment to fully taxable
  equivalent basis                             3,048       3,335       3,469
Interest income adjusted to fully
  taxable equivalent basis                   154,486     144,436     135,911
Interest expense                              69,156      62,284      58,589

Net interest income adjusted to fully
  taxable equivalent basis                   $85,330     $82,152     $77,322

PAGE 6

Item 1. BUSINESS -- Continued

Average Balance Sheet and Net Interest Income Analysis
[CAPTION]

                                                           December 31
                                    1998                       1997                        1996
                         Average             Yield/ Average             Yield/ Average              Yield/
                         Balance    Interest  Rate  Balance    Interest  Rate  Balance     Interest  Rate
                                                  (IN THOUSANDS OF DOLLARS)

ASSETS
                                     >C>                                                                
Interest-earning
assets:
   Loans (1)(2)          $1,314,984  $115,993 8.82% $1,234,733  $109,781 8.89% $1,131,186  $100,373  8.87%
   Taxable investment
    securities              502,889    35,784 7.12%    405,840    30,663 7.56%    411,560    30,871  7.50%
   Tax-exempt investment
    securities (2)           28,459     2,395 8.42%     41,850     3,461 8.27%     52,026     4,332  8.33%
   Interest-earning
    deposits with banks          83         6 7.23%        111         8 7.21%         73         5  6.85%
   Federal funds sold         5,812       308 5.30%      9,528       523 5.49%      6,097       330  5.41%
Total interest-earning
assets (3)                1,852,227   154,486 8.34%  1,692,062   144,436 8.54%  1,600,942   135,911  8.49%

Noninterest-earning
assets:
   Cash and due from
    banks                    39,395                     36,185                     38,741
   Premises and equip-
    ment, net                20,905                     19,752                     19,419
   Market value appreci-
    ation of securities
    available for sale       60,811                     46,626                     33,524
   Other assets              44,755                     38,971                     36,972
Less allowance for loan
losses                      (23,562)                   (19,802)                   (17,630)
                         $1,994,531                 $1,813,794                 $1,711,968

LIABILITIES AND SHAREHOLDERS' EQUITY

Interest-bearing
liabilities:
   NOW/Money market
    accounts               $327,851   $10,146 3.09%   $294,356    $8,772 2.98%  $242,838  $7,628  3.14%
   Savings deposits         172,525     3,914 2.27%    187,394     4,340 2.32%   206,287   5,049  2.45%
   Time deposits            642,681    35,510 5.53%    626,192    34,854 5.57%   605,693  33,448  5.52%
   Federal funds
    purchased                 7,007       383 5.47%      8,369       472 5.64%     5,812     319  5.49%
   Securities sold
    under agreements
    to repurchase           170,961     8,968 5.25%    126,481     6,602 5.22%   135,199   7,006  5.18%
   Long-term borrowing      185,959    10,226 5.50%    123,722     7,227 5.84%    88,613   5,071  5.72%
   Other borrowed funds         130         9 6.92%        230        17 7.39%       641      68 10.61%
Total interest-bearing
liabilities (3)           1,507,114    69,156 4.59%  1,366,744    62,284 4.56% 1,285,083  58,589  4.56%

Noninterest-bearing
liabilities:
  Demand deposits           183,435                    161,339                   151,863
  Other                      47,423                     42,048                    34,235

Shareholders' equity        256,559                    243,663                   217,138
                         $1,994,531                 $1,813,794                $1,688,319

Net interest income                   $85,330                    $82,152                 $77,322
Net yield on interest-
earning assets                                4.61%                     4.85%                     4.83%

(1) For the purpose of these computations, nonaccruing loans are included in the daily average loan amounts outstanding.
(2) Tax-exempt income is on an FTE basis, including the dividend received deduction for equity securities, using the statutory federal income tax rate of 35% for 1998, 1997 and 1996.
(3) Yields are calculated using historical cost basis.

PAGE 7

Item 1. BUSINESS -- Continued

The following tables set forth for the periods indicated a summary of the changes in interest earned and interest paid resulting from changes in volume and changes in rates:
[CAPTION]

                           1998 Compared to 1997           1997 Compared to 1996
                      Increase (Decrease) Due to (1)   Increase (Decrease) Due to (1)
                        Volume     Rate      Net         Volume     Rate     Net
                                       (In thousands of dollars)
Interest earned on:
  Loans (2)              $7,135    ($923)    $6,212      $9,188     $220     $9,408
  Taxable investment
   securities             7,332   (2,211)     5,121        (429)     221       (208)
  Tax-exempt investment
   securities (2)        (1,107)      41     (1,066)       (847)     (24)      (871)
  Interest-earning
   deposits                  (2)       0         (2)          3        0          3
  Federal funds sold       (204)     (11)      (215)        186        7        193
Total interest-earning
 assets                 $13,154  ($3,104)   $10,050      $8,101     $424     $8,525

Interest paid on:
  NOW/Money market
   accounts              $3,597  ($2,223)    $1,374      $1,141       $3     $1,144
  Savings deposits         (344)     (82)      (426)       (462)    (247)      (709)
  Time deposits             918     (262)       656       1,132      274      1,406
  Securities sold under
   agreements to
   repurchase             2,322       44      2,366        (452)      48       (404)
  Federal funds purchased   (77)     (12)       (89)        140       13        153
  Long-term borrowings    3,635     (636)     2,999       2,009      147      2,156
  Other borrowed funds       (7)      (1)        (8)        (44)      (7)       (51)
Total interest-bearing
 liabilities            $10,044  ($3,172)    $6,872      $3,464     $231     $3,695

Change in net interest
 income                                      $3,178                          $4,830

(1) The change in interest due to both volume and rate has been allocated to volume and rate changes in proportion to the relationship of the absolute dollar amounts of the change in each.
(2) Tax-exempt income is on an FTE basis using the statutory federal income tax rate of 35% for 1998, 1997 and 1996.

PAGE 8

Item 1. BUSINESS -- Continued

INFLATION AND CHANGING INTEREST RATES

The majority of assets and liabilities of a financial institution are monetary in nature and therefore differ greatly from most commercial and industrial companies that have significant investments in fixed assets or inventory. Fluctuations in interest rates and the efforts of the Federal Reserve Board to regulate money and credit conditions have a greater effect on a financial institution's profitability than do the effects of higher costs for goods and services. Through its asset/liability management committee ("ALCO"), S&T is positioned to cope with changing interest rates and inflationary trends. ALCO monitors and manages interest rate sensitivity through gap, simulation and duration analysis.

The schedule below presents S&T's interest rate sensitivity at December 31, 1998 using gap analysis. The gap and cumulative gap represents the net position of assets and liabilities subject to repricing in specified time periods, as measured by a ratio of rate sensitive assets to rate sensitive liabilities. ALCO policy guidelines for cumulative gap in the six and twelve month time frames, annually approved by the S&T Board of Directors, is currently a .85 to 1.15 range. Management believes this range provides an acceptable and manageable level of interest rate risk for S&T. Significant to gap analysis is the expected rate of asset prepayment, calls on securities and the behavior of depositors during periods of changing interest rates. For example, in periods of declining interest rates, borrowers can be expected to accelerate loan prepayments and refinancings; depositors will tend to hold those certificates of deposits with rates currently higher than the market. Conversely, in a rising interest rate scenario, borrower refinancings and prepayments typically decrease, while deposit shifting and early withdrawals tend to accelerate as depositors position funds to earn higher yields.

ALCO continually monitors these historical behavior patterns through periods of changing interest rates, and uses this information to develop loan prepayments and decay rates for Core Deposits (demand, NOW, savings). The gap analysis below incorporates a flat rate scenario, and the following significant assumptions:

Monthly loan prepayments above contractual requirements

          5 year ARM - Commercial Real Estate                1.50 %
          Fixed Rate - Commercial Real Estate                1.25
          Residential Real Estate                            1.75
          New Indirect Auto Loans                            2.00
          Other Installment Loans                            2.75

Deposit behavioral patterns/decay rate assumptions

          NOW and Savings - Year #1                         25.00 %
          NOW and Savings - Year #2                         25.00
          NOW and Savings - beyond Year #2                  50.00
          Money market pricing is indexed and
             tiered to market interest rates.                  NA
          S&T has not historically experienced
             fluctuations in demand deposit balances
             during periods of interest rate fluctuations.     NA

Swaps

    Reflects that portion of borrowings whose interest
    rate risk is reduced due to the effects of interest
    rate swaps.

PAGE 9

Item 1. BUSINESS -- Continued

[CAPTION]

                                  Interest Rate Sensitivity
                                       December 1998
                                   (thousands of dollars)

             GAP          1-6 Months  7-12 Months 13-24 Months  >2 Years
Repricing Assets:
 Cash/Due From Banks              $0          $0          $0     $48,789
 Federal Funds                19,300           0           0           0
 Securities                  112,486      87,599     211,319     180,084
 Net Loans                   537,401     153,269     211,043     437,520
 Other Assets                      0           0           0      70,804
      Total                 $669,187    $240,868    $422,362    $737,197

Repricing Liabilities:
 Demand                           $0          $0          $0    $215,666
 NOW                          15,424      15,424      30,846      61,694
 Money Market                239,341           0           0           0
 Savings/Clubs                21,060      21,060      42,122      84,243
 Certificates                244,034     142,927     143,355     102,868
 Repos & Short-term
  Borrowings                 128,262         564           0           0
 Long-term Borrowings         19,600           0           0     220,468
 Swaps                             0           0      10,000           0
 Other Liabilities/Equity          0           0           0     310,656
      Total                 $667,721    $179,975    $226,323    $995,595

GAP                           $1,466     $60,893    $196,039   ($258,398)

Cumulative GAP                $1,466     $62,359    $258,398          $0

                                                  Immediate
Rate Sensitive Assets/Rate   Current   Policy     Core Deposits
Sensitive Liabilities        Month     Guideline  Repricing
Cumulative 6 months           1.00      .85-1.15    0.72
Cumulative 12 months          1.07      .85-1.15    0.85

S&T's six month and one year gap position at December 31, 1998 is asset sensitive. Asset sensitive means that more assets than liabilities of S&T will reprice during the measured time frames. The implications of an asset sensitive position will differ depending upon the current trend of market interest rates.

For example, an asset sensitive position in a declining interest rate environment, the yields on repricing assets can theoretically be expected to decline more quickly than the cost of S&T repricing liabilities. This situation would cause a decrease to S&T's interest rate spreads, net interest income and to operating income. Liquidity impacts in this scenario, other than decreased yields, would not be material unless serious ongoing declines in operating results caused depositors, lenders and investors to lose confidence.

Conversely, an asset sensitive gap position in a rising interest rate scenario would theoretically have a positive impact to interest rate spreads, net income and to operating income. Liquidity impacts would not be material in the short-term; in the long-term, improved operating income is always beneficial to liquidity issues.

Gap analysis usefulness as a measurement of interest rate risk is limited because the time period measured is static. Simulation provides a more dynamic modeling tool for interest rate risk since this technique can incorporate future assumptions about interest rates, volume fluctuations and customer behaviors. ALCO uses simulation to measure changes in net interest income during a 2%, plus or minus, change in current market interest rates (Rate Shock Analysis). Current ALCO policy guidelines require that declines in forecasted net interest income do not exceed 3% as a result of Rate Shock Analysis.

Duration techniques are a relatively new addition to S&T's interest rate risk monitoring tools. Duration modeling is primarily used to assist in match fundings for large commercial loans, security purchases and segments of the installment loan portfolios.

PAGE 10

Item 1. BUSINESS -- Continued

Securities

S&T invests in various securities in order to provide a source of liquidity, increase net interest income and as an ALCO tool to quickly reposition the balance sheet for interest rate risk purposes. Securities are subject to similar interest rate and credit risks as loans. In addition, by their nature, securities classified as available for sale are also subject to market value risks that could negatively affect the level of liquidity available to S&T, as well as equity.

Risks associated with various securities portfolios are managed and monitored by investment policies annually approved by the S&T Board of Directors, and administered through ALCO and the Chief Investment Officer. As of December 31, 1998, management is not aware of any risk associated with securities that would be expected to have a significant, negative effect to S&T's statement of condition or statement of operations.

The following table sets forth the carrying amount of securities at the dates indicated:
[CAPTION]

                                                      December 31
                                               1998       1997       1996
                                                (In thousands of dollars)
Available for Sale
Marketable equity securities                 $115,532   $101,639    $75,805
Obligations of U.S. government corporations
  and agencies                                357,417    341,288    235,924
Collateralized mortgage obligations of
  U.S. government corporations and agencies         0          0      4,182
Mortgage-backed securities                      8,715     14,542     47,462
U.S. Treasury securities                       27,952     39,473     58,742
Corporate securities                           36,353     11,064     14,550
Other securities                               19,172     13,111     13,136
           TOTAL                             $565,141   $521,117   $449,801


Held to Maturity
Obligations of states and political
  subdivisions                                $21,009    $37,497    $46,334
Corporate securities                            1,999      1,998      1,998
Other securities                                3,337      7,608      1,928
           TOTAL                              $26,345    $47,103    $50,260

PAGE 11

Item 1. BUSINESS -- Continued

The following table sets forth the maturities of securities at December 31, 1998, and the weighted average yields of such securities (calculated on the basis of the cost and effective yields weighted for the scheduled maturity of each security). Tax-equivalent adjustments (using a 35% federal income tax rate) for 1998 have been made in calculating yields on obligations of state and political subdivisions.

                                                                   Maturing
                                    Within     After One But     After Five But      After         No Fixed
                                   One Year  Within Five Years  Within Ten Years    Ten Years      Maturity
                               Amount   Yield  Amount   Yield   Amount     Yield  Amount   Yield   Amount
                                                 (in thousands of dollars)
Available for Sale
Marketable equity securities                                                                       $115,532
Obligations of U.S. government
  corporations and agencies    $10,170  7.47%  $242,703  6.25%  $104,545   7.39%
Mortgage-backed securities         194  6.49%                      4,632   7.64%  $3,889   7.51%
U.S. Treasury securities        12,712  7.27%     8,571  7.20%     6,669   7.81%
Corporate securities               615  8.70%    26,177  6.59%     9,560   6.19%
Other securities                                                                                     19,172
     TOTAL                     $23,691         $277,451         $125,406          $3,889           $134,704
Weighted Average Rate                   7.39%            6.31%             7.33%           7.51%

Held to Maturity
Obligations of states and
  political subdivisions        $4,934  7.46%   $12,436  8.50%    $3,639   8.87%
Corporate securities                              1,999  7.15%
Other securities                                                                                     $3,337
     TOTAL                      $4,934          $14,435           $3,639              $0             $3,337
Weighted Average Rate                   7.46%            8.31%             8.87%           0.00%

PAGE 12

Item 1. BUSINESS -- Continued

Loan Portfolio

The following table shows S&T's loan distribution at the end of each of the last five years:
[CAPTION]

                                                 December 31
                               1998       1997      1996      1995       1994
                                               (In thousands of dollars)
Domestic Loans:
  Commercial, mortgage
    and industrial           $672,742   $582,401   $496,863   $450,932   $416,036
  Real estate-construction     87,246     47,967     35,508     30,191     35,660
  Real estate-mortgage        492,570    512,417    513,424    461,822    413,533
  Installment                 113,351    130,968    154,341    160,437    161,105
       TOTAL LOANS         $1,365,909 $1,273,753 $1,200,136 $1,103,382 $1,026,334

The following table shows the maturity of loans (excluding residential mortgages of 1-4 family residences and installment loans) outstanding as of December 31, 1998. Also provided are the amounts due after one year classified according to the sensitivity to changes in interest rates.

[CAPTION]

                                              Maturing
                                       After One
                           Within      But Within    After
                           One Year    Five Years    Five Years  Total
                                    <in thousands of dollars)

Commercial, mortgage
  and industrial           $259,634     $204,121     $208,987    $672,742
Real estate-construction     18,199       33,849       35,198      87,246
           TOTAL           $277,833     $237,970     $244,185    $759,988



Fixed interest rates                     $92,797      $62,036
Variable interest rates                  145,173      182,149
           TOTAL                        $237,970     $244,185

PAGE 13

Item 1. BUSINESS -- Continued

Nonaccrual, Past Due and Restructured Loans

The following table summarizes S&T's nonaccrual, past due and restructured loans:
[CAPTION]

                                                December 31
                           1998         1997       1996       1995       1994
                                                                                    (IN THOUSANDS OF DOLLARS)
Nonaccrual loans         $2,933       $3,602    $10,268     $4,748     $3,894

Accruing loans past
  due 90 days or more        $0           $0         $0         $0         $0

At December 31, 1998, $2,933,000 of nonaccrual loans were secured. Interest income that would have been recorded under original terms totaled $337,000. No interest income was recorded on these loans. It is S&T's policy to place loans on nonaccrual status when collection of interest or principal is doubtful, or generally when interest or principal are 90 days or more past due. The accrual of interest on impaired loans is discontinued when, in management's opinion, the borrower may be unable to meet payments as they become due. At December 31, 1998, there were no impaired loans that were on nonaccrual. There are no foreign loan amounts required to be included in this table. There were no restructured loans in the periods presented.

Summary of Loan Loss Experience

Management evaluates the degree of loss exposure for loans on a continuous basis through a formal loan policy as administered by the Loan Administration Department and various management and director committees. Problem loans are identified and continually monitored through detailed reviews of specific large dollar loans, and the analysis of delinquency and charge-off levels of consumer loan portfolios. Charged-off and recovered loan amounts are applied to the allowance for loan losses. Quarterly updates are presented to the S&T Board of Directors as to the status of loan quality.

Additional amounts are added through a charge to current earnings through the provision for loan losses, based upon management's assess- ment about the adequacy of the allowance for loan losses for probable loan losses. A quantitative analysis is utilized to support the adequacy of the allowance for loan losses. This analysis includes review of the high and low historical charge-off rates for loan categories, fluctuations and trends in the amount of classified loans and economic factors. Economic factors consider the level of S&T's historical charge-offs that have occurrence within the credits economic life cycle. Management also assesses other subjective factors such as economic conditions and business trends, concentrations, growth and composition of the loan portfolio and effectiveness of the Loan Administration Department.

Significant to this analysis and assessment is the shift in loan portfolio composition to an increased mix of commercial loans. These loans are generally larger in size and due to our continuing growth, many are not well seasoned and could be more vulnerable to an economic slowdown. Management relies on its risk rating process to monitor trends which may be occurring relative to commercial loans to assess potential weaknesses within specific credits. Current economic factors and trends in risk ratings are considered in the determination of the allowance for loan losses.

This analysis and assessment results in an allowance for loan losses consisting of two components, allocated and unallocated. The allocated component of the allowance for loan losses reflects expected losses resulting from the analysis of individual loans developed through specific ratings and allocations, and historical loss experience for categories of loans. The specific allocations are based upon regular analysis of loans and commitments over a fixed dollar amount and the internal credit rating for the loan or commit- ment. Categories of smaller individual loans are allocated based upon historical losses and current delinquency levels.

PAGE 14

Item 1. BUSINESS -- Continued

The unallocated component is primarily subjective based upon management's assessment of nonquantifiable factors that make historical trend analyses difficult:

Economic factors
Loan concentration in western Pennsylvania. Significant commercial loan volume increases in the last three years in new markets with new customers. The introduction of several new consumer products. Increased commercial real estate lending. Recent increases in charged-off and impaired loans. Peer analysis.

The allowance for loan losses in each of the years presented below considered management's assessment of the factors noted above, along with the growth in the loan portfolio. The additions to the allowance charged to operating expense has maintained the allowance as a percent of loans at the following levels at the end of each year presented.

Year Ended December 31

1998 1997 1996 1995 1994

1.95% 1.60% 1.56% 1.55% 1.48%

S&T has considered impaired loans in its determination of the allowance for loan losses. The allowance for loan losses for all impaired loans totaled $133,000 and $914,000 at December 31, 1998 and 1997, respectively, and is included in the allowance allocated specifically to commercial loans.

Asset quality is a major corporate objective at S&T. Based on the evaluation of loan quality and assessment of risk characteristics, management believes that the allowance for loan losses is adequate to absorb probable loan losses.

This table summarizes S&T's loan loss experience for each of the five years ended December 31:
[CAPTION]

                                         Year Ended December 31
                             1998     1997       1996       1995       1994
                                           (In thousands of dollars)
Balance at January 1:      $20,427   $18,729    $17,065    $15,169    $14,242

Charge-offs:
 Commercial, mortgage
  and industrial             2,905     1,654      2,986      1,313      2,333
 Real estate-mortgage        1,497     1,056        405        148        196
 Installment                 1,597     1,771      2,145      1,578      1,258
                             5,999     4,481      5,536      3,039      3,787
Recoveries:
 Commercial, mortgage
  and industrial               713       517      1,591        294        505
 Real estate-mortgage          389       221        105        107        188
 Installment                   597       441        329        314        421
                             1,699     1,179      2,025        715      1,114
Net charge-offs              4,300     3,302      3,511      2,324      2,673
Provision for loan losses   10,550     5,000      5,175      4,220      3,600
Balance at December 31:    $26,677   $20,427    $18,729    $17,065    $15,169

Ratio of net charge-offs
to average loans outstanding  0.33%     0.27%      0.31%      0.22%      0.28%

PAGE 15

Item 1. BUSINESS -- Continued
[CAPTION]

    This table shows allocation of the allowance for loan losses as of the end of each of the last five years:

                     December 31, 1998    December 31, 1997    December 31, 1996    December 31, 1995       December 31, 1994
                             Percent of           Percent of           Percent of           Percent of           Percent of
                             Loans in             Loans in             Loans in             Loans in             Loans in
                             Each                 Each                 Each                 Each                 Each
                             Category to          Category to          Category to          Category to          Category to
                      Amount Total Loans   Amount Total Loans   Amount Total Loans   Amount Total Loans   Amount Total Loans
                                          (In thousands of dollars)
Commercial, mortgage
  and industrial         $16,850  49%           $13,556  46%          $9,605   41%          $8,579   41%          $9,578   41%
Real estate-construc-
  tion                         0   7%                 0   4%               0    3%               0    3%               0    3%
Real estate-mortgage       1,096  36%               763  40%           1,680   43%           1,321   42%           1,215   40%
Installment                2,635   8%             1,865  10%           1,859   13%           1,803   14%           1,510   16%
Unallocated                6,096   0%             4,243   0%           5,585    0%           5,362    0%           2,866    0%
          TOTAL          $26,677 100%           $20,427 100%         $18,729  100%         $17,065  100%         $15,169  100%

Deposits

The daily average amount of deposits and rates paid on such deposits is summarized for the periods indicated in the following table:

[CAPTION] Year Ended December 31

                             1998               1997               1996
                        Amount   Rate      Amount   Rate      Amount   Rate
                                    (In thousands of dollars)
Noninterest-bearing
  demand deposits      $183,435           $161,339           $151,863
NOW/ Money market
  accounts              327,851  3.09%     294,356  2.98%     242,838  3.14%
Savings deposits        172,525  2.27%     187,394  2.32%     206,287  2.45%
Time deposits           642,681  5.53%     626,192  5.57%     605,693  5.52%
           TOTAL     $1,326,492         $1,269,281         $1,206,681

Maturities of time certificates of deposit of $100,000 or more outstanding at December 31, 1998, are summarized as follows:


(In thousands of dollars)

[CAPTION]

3 Months or less                                 $39,268
Over 3 through 6 months                            9,887
Over 6 through 12 months                          16,301
Over 12 months                                    25,716
           TOTAL                                 $91,172

Return on Equity and Assets

The table below shows consolidated operating and capital ratios of S&T for each of the last three years:
[CAPTION]

                                               Year Ended December 31
                                             1998       1997       1996
Return on average assets                     1.90%      1.84%      1.65%
Return on average equity                    14.80%     13.71%     13.01%
Dividend payout ratio                       46.14%     42.54%     37.77%
Equity to asset ratio                       12.55%     13.55%     12.65%

PAGE 16

Item 1. BUSINESS -- Continued

Short-Term Borrowings

The following table shows the distribution of S&T's short-term borrowings and the weighted average interest rates thereon at the end of each of the last three years. Also provided are the maximum amount of borrowings and the average amounts of borrowings as well as weighted average interest rates for the last three years.

                                                        Federal Funds
                                                        Purchased and
                                                        Securities
                                                        Sold Under
                                                        Agreements
                                                        to Repurchase
                                                 (In thousands of dollars)
Balance at December 31:
  1998                                                     $138,825
  1997                                                      179,449
  1996                                                      114,980

Weighted average interest rate at year end:
  1998                                                         4.63%
  1997                                                         5.82%
  1996                                                         5.68%

Maximum amount outstanding at any month's end:
  1998                                                     $251,030
  1997                                                      195,024
  1996                                                      180,776

Average amount outstanding during the year:
  1998                                                     $177,968
  1997                                                      134,851
  1996                                                      141,012

Weighted average interest rate during the year:
  1998                                                         5.29%
  1997                                                         5.31%
  1996                                                         5.24%

S&T defines repurchase agreements with its retail customers as retail REPOs; wholesale REPOs are those transacted with other banks and brokerage firms with terms normally ranging from 1 to 14 days.

PAGE 17

Item 2. PROPERTIES

S&T operates 38 banking offices in Indiana, Armstrong, Allegheny, Jefferson, Clearfield, Clarion, Westmoreland and surrounding counties in Pennsylvania. S&T owns land and banking offices at the following locations: 800 Philadelphia Street, 2175 Route 286 South in Indiana; Route 119 South & Lucerne Road and 34 North Main Street in Homer City; 232 North Hampton Avenue in Punxsutawney; 133 Philadelphia Street in Armagh; Route 119 in Black Lick; 256 Main Street and Route 36 & I-80 in Brookville; 456 Main Street in Brockway; Route 28 & Carrier Street in Summerville; 602 Salt Street in Saltsburg; 35 West Scribner Avenue, Treasure Lake; and 614 Liberty Boulevard in DuBois; 418 Main Street in Reynoldsville; 205 East Market Street in Blairsville; 85 Greensburg Street in Delmont; 100 South Chestnut Street in Derry; 109 Grant Avenue in Vandergrift; 100 South Fourth Street in Youngwood; 701 East Pittsburgh Street in Greensburg; 2190 Hulton Road in East Oakmont; 4385 Old William Penn Highway in Monroeville; 7660 Saltsburg Road in Plum; 12262 Frankstown Road in Penn Hills; 410 Main Street in Clarion; and 301 Unity Center Road in Unity. Land is leased where S&T owns the banking offices at 1107 Wayne Avenue and remote ATM buildings at 435 South Seventh Street and 1176 Grant Street, all in Indiana; 8th and Merle Street and Gemmel Student Center in Clarion; 730 East Pittsburgh Street in Greensburg; and 523 Franklin Avenue in Vandergrift. In addition, S&T leases land and banking offices at the following locations: Chestnut Ridge Plaza in Blairsville; 324 North Fourth Street and 2850 Route 286 South and Hospital Road in Indiana; the Mall Office in DuBois; 229 Westmoreland Mall; 2388 Route 286 in Holiday Park; Route 268 Hilltop Plaza in Kittanning and a remote ATM location at the Main Street Mall in DuBois.

Item 3. LEGAL PROCEEDINGS

The nature of S&T's business generates a certain amount of litigation involving matters arising in the ordinary course of business. However, in the opinion of management, there are no proceedings pending to which S&T is a party or to which its property is subject, which, if determined adverse, would be material in relation to its shareholders' equity or financial condition. In addition, no material proceedings are pending nor are known to be threatened or contemplated against S&T by governmental authorities or other parties.

Item 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

There were no matters during the fourth quarter of the fiscal year covered by this report that were submitted to a vote of the security holders through solicitation of proxies or otherwise.

PART II

Item 5. MARKET FOR REGISTRANT'S COMMON STOCK AND RELATED SHAREHOLDER MATTERS

Stock Prices and Dividend Information on page 54 and Dividend and Loan Restrictions on page 44 of the Annual Report for the year ended December 31, 1998, incorporated herein by reference.

Item 6. SELECTED FINANCIAL DATA

Selected Financial Data on pages 54 and 55 of the Annual Report for the year ended December 31, 1998, incorporated herein by reference.

PAGE 18

Item 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Management's Discussion and Analysis of Financial Condition and Results of Operations on pages 21 through 30 of the Annual Report for the year ended December 31, 1998, incorporated herein by reference.

Item 7(A). QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Quantitative and Qualitative Disclosures about Market Risk on pages 27 and 28 of the Annual Report for the year ended December 31, 1998, incorporated herein by reference.

Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The Consolidated Financial Statements, Report of Independent Auditors and Quarterly Selected Financial Data on pages 31 through 53 and page 55 of the Annual Report for the year ended December 31, 1998, incorpor- ated herein by reference.

Item 9. CHANGES AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURES

There have been no changes in accountants or disagree- ments with accountants on accounting and financial disclosures.

PART III

Item 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

Election of Directors on pages 4 through 5 of the proxy statement for the April 19, 1999, annual meeting of shareholders, incorporated herein by reference.

                                     Executive Officers
                                                        Number of
                                                        Shares
                          For the              Officer  Beneficially
Name                      Corporation           Since   Owned (1)       Age
Robert D. Duggan           Chairman              1983    180,927         66
                           and Director

James C. Miller            President, Chief      1983    154,516         53
                           Executive Officer
                           and Director

James G. Barone            Executive Vice        1992     50,682         51
                           President,
                           Secretary and
                           Treasurer

Robert E. Rout             Executive Vice        1993     39,014         46
                           President and
                           Chief Financial
                           Officer

Bruce W. Salome            Executive Vice        1991     76,773         52
                           President

Edward C. Hauck            Executive Vice        1991     47,090         46
                           President

PAGE 19

Item 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT -- Continued

                                          Executive Officers (continued)
                                                        Number of
                                                        Shares
                          For the             Officer   Beneficially
Name                      Corporation          Since    Owned (1)       Age

David L. Krieger          Executive Vice       1984     22,680         55
                          President

J. Jeffrey Smead          Executive Vice       1992     53,731         47
                          President

William H. Klumpp         Senior Vice          1994     14,971         55
                          President

Edward A. Onderick        Senior Vice          1989     56,774         54
                          President

David P. Ruddock          Senior Vice          1998      6,038         37
                          President

(1) May include shares held by spouse, other family members, as trustee or through a corporation, and nonstatutory stock options vesting within 60 days of the date of this 10-K Report. The reporting person may disclaim beneficial ownership of such shares.

PAGE 20

Item 11. EXECUTIVE COMPENSATION

Remuneration of Executive Officers on pages 7 and 8 of the proxy statement for the April 19, 1999, annual meeting of shareholders, incorporated herein by reference.

Item 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Principal Beneficial Owners of Common Stock on page 3 of the proxy statement for the April 19, 1999, annual meeting of shareholders, incorporated herein by reference.

Item 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Transactions with Management and Others on pages 10 and 11 of the proxy statement for April 19, 1999, annual meeting with shareholders, incorporated herein by reference.

PART IV

Item 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

(a) List of financial statements and financial statement schedules

(1) The following Consolidated Financial Statements and Report of Independent Auditors of S&T Bancorp, Inc. and subsidiaries included in the annual report of the registrant to its shareholders for the year ended December 31, 1998, are incorporated by reference in Part II, Item 8:

                                                             Page
                                                          Reference
Report of Ernst & Young LLP,  Independent Auditors             53

Consolidated Balance Sheets
   December 31, 1998 and 1997                                  31

Consolidated Statements of Income
   Year ended December 31, 1998, 1997, and 1996                32

Consolidated Statements of Changes in Shareholders' Equity
   Year ended December 31, 1998, 1997, and 1996                33

Consolidated Statements of Cash Flows
   Year ended December 31, 1998, 1997, and 1996                34

Notes to Consolidated Financial Statements
   December 31, 1998                                         35-52

Quarterly Selected Financial Data                              55

PAGE 21

Item 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON
FORM 8-K (Continued)

(2) Schedules to the consolidated financial statements required by Article 9 of Regulation S-X are not required under the related instructions or are inapplicable, and therefore have been omitted.

(3) Listings of Exhibits - See Item 14 (c) below

(b) Reports on Form 8-K

Form 8-K dated September 21, 1998 was filed by S&T Bancorp, Inc. announcing a two-for-one stock split which was effected in the form of a 100% stock dividend.

(c) Exhibits

      (3.1)  Articles of Incorporation of S&T Bancorp, Inc.
             filed as Exhibit B to Registration Statement (No. 2-83565)
             on Form S-4 of S&T Bancorp, Inc. dated May 5, 1983,
             incorporated herein by reference.

      (3.2)  Amendment to Articles of Incorporation of S&T Bancorp,
             Inc. filed as Exhibit 3.2 to Form S-4 Registration Statement
             (No. 33-02600) dated January 15, 1986, incorporated herein
             by reference.

      (3.3)   Amendment to Articles of Incorporation of S&T Bancorp, Inc.
              effective May 8, 1989 - filed herewith.

      (3.4)   Amendment to Articles of Incorporation of S&T Bancorp, Inc.
              effective July 21, 1995 - filed herewith.

      (3.5)   Amendment to Articles of Incorporation of S&T Bancorp, Inc.
              effective June 18, 1998 - filed herewith.

      (3.6)   By-Laws of S&T Bancorp, Inc., as amended, - filed herewith.

(13)      Annual Report for the year ended December 31, 1998,
       pages 21-55 filed herewith.

(21)      Subsidiaries of the Registrant - filed herewith.

(23.1)    Consent of Ernst & Young LLP, Independent Auditors -
       filed herewith.

(23.2)    Consent of S.R. Snodgrass, A.C., Independent Auditors -
       filed herewith.

(99)      Report of S.R. Snodgrass, A.C., Independent Auditors -
       filed herewith.

PAGE 22

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

S&T BANCORP, INC.
(Registrant)

/s/  James C. Miller              03/15/99
James C. Miller,                    Date
President and Chief
Executive Officer
(Principal Executive Officer)


/s/  Robert E. Rout               03/15/99
Robert E. Rout,                     Date
Executive Vice President
and Chief Financial Officer
(Principal Financial and
 Accounting Officer)

PAGE 23

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

/s/  Thomas A. Brice         03/15/99    /s/  Joseph A. Kirk         03/15/99
Thomas A. Brice, Director      Date      Joseph A. Kirk, Director      Date


/s/  James L. Carino         03/15/99    /s/  Frank W. Jones         03/15/99
James L. Carino, Director      Date      Frank W. Jones, Director      Date


/s/  John J. Delaney         03/15/99    /s/  James C. Miller        03/15/99
John J. Delaney, Director      Date      James C. Miller, President,   Date
                                         Chief Executive Officer and
                                         Director

/s/  Robert D. Duggan        03/15/99    /s/  Alan Papernick         03/15/99
Robert D. Duggan, Chairman     Date      Alan Papernick, Director      Date


/s/  William J. Gatti        03/15/99    /s/ W. Parker Ruddock       03/15/99
William J. Gatti, Director     Date      W. Parker Ruddock, Director   Date


/s/  Ruth M. Grant           03/15/99    /s/  Myles D. Sampson       03/15/99
Ruth M. Grant, Director        Date      Myles D. Sampson, Director    Date


/s/  Jeffrey D. Grube        03/15/99    /s/  Charles A. Spadafora   03/15/99
Jeffrey D. Grube, Director     Date      Charles A. Spadafora,         Date
                                         Director


/s/  Herbert L. Hanna        03/15/99    /s/  Christine J. Toretti   03/15/99
Herbert L. Hanna, Director     Date      Christine J. Toretti,         Date
                                         Director

PAGE 24

The first paragraph of the provisions of the Articles of Incorporation of the Corporation relating to the authorized capital stock of the Corporation, shall be amended to read as follows:

Total Number of Authorized Shares. The Corporation shall be authorized to issue 15,000,000 shares of common stock, $2.50 par value per share.

9. Classification of Directors

The Board of Directors of the Corporation shall be divided into three classes, the respective terms of office of which shall end in successive years. The number of directors in each class shall be specified in the By-Laws and shall be as equal as possible. The directors of each class shall be elected for terms of three (3) years and until the election and qualification of their successors or until their earlier resignation, death or removal or disqualifi- cation from office. At each annual meeting of shareholders, the directors of only one class shall be elected, except directors who may be elected to fill vacancies. Vacancies in the Board of Directors, including vacancies resulting from an increase in the number of directors, shall be filled only by a majority of the remaining members of the Board of Directors, though less than a quorum, and each person so elected shall be a director until his or her successor is elected by the shareholders or until his or her earlier death, resignation or removal or disqualification from office. Notwithstanding anything contained in the Articles of Incorporation or in the By-Laws of the Corporation to the contrary the affirmative vote of at least sixty-six and two-thirds (66 2/3) percent of the outstanding shares of common stock entitled to vote generally in the election of directors, voting together as a single class, shall be required to alter, amend, adopt any provision inconsistent with or repeal this Article 9.


The first paragraph of the provisions of the Articles of Incorp- oration of the Corporation relating to the authorized capital stock of the Corporation, shall be amended to read in their entirety as follows:

Total Number of Authorized Shares. The Corporation shall be authorized to issue 25,000,000 shares of common stock, $2.50 par value per share, and 10,000,000 shares of preferred stock, without par value ("Preferred Stock").

Issuance and Designation of Shares of Preferred Stock. The Board of Directors of the Corporation is authorized, subject to limitaions prescribed by law and the provisions of these Articles of Incorporation, to provide for the issuance of the shares of Preferred Stock in series, and by filing a statement with the Pennsylvania Department of State pursuant to the applicable law of the Commonwealth of Pennsylvania, to establish from time to time the number of shares to be included in each such series, and to fix the designation, powers, preferences and rights of the shares of each such series and the qualificaitons, limitations or restrictions thereof.

The authority of the Board with respect to each series shall include, but not be limited to, determination of the following:

(a) The number of shares constituting that series and the distinctive designation of that series;

(b) The dividend rate on the shares of that series, whether dividends shall be cumulative, and if so, from which date or dates, and the relative rights of priority, if any, of payment of dividends on shares of that series;

(c) Whether that series shall have voting rights, in addition to the voting rights provided by law, and, if so, the terms of such voting rights;

(d) Whether that series shall have conversion privileges, and, if so, the terms and conditions of such conversion, including provision for adjustment of the conversion rate in such events as the Board of Directors shall determine;

(e) Whether or not the shares of that series shall be redeemable, and, if so, the terms and conditions of such redemption, including the date or date upon or after which they shall be redeemable, and the amount per share payable in case of redemption, which amount may vary under different conditions and at different redemption dates;

(f) Whether that series shall have a sinking fund for the redemption or purchase of shares of that series, and, if so, the terms and amount of such sinking fund;

(g) The rights of the shares of that series in the event of voluntary or involuntary liquidation, dissolution or winding up of the corporation, and the relative rights of priority, if any, of payment of shares of that series; and

(h) Any other relative rights, preferences and limitations of that series.

Dividends on Preferred Stock. Dividends on outstanding shares of Preferred Stock shall be paid or declared and set apart for payment before any dividends shall be paid or declared and set apart for payment on the common shares with respect to the same dividend period.

Liquidation Distributions to Holders of Preferred Stock. If upon any voluntary or involuntary liquidation, dissolution or winding up of the Corporation, the assets available for distribution to holders of shares of Preferred Stock of all series shall be insufficient to pay such holders the full preferential amount to which they are entitled, then such assets shall be distributed ratably among the shares of all series of Preferred Stock in accordance with the respective preferential amounts (including unpaid cumulative dividends, if any) payable with respect thereto.


The first paragraph of the provisions of the Articles of Incorporation of the corporation, relating to the authorized capital stock of the corpor- ation, shall be amended to read as follows:

Total Number of Authorized Shares. The Corporation shall be authorized to issue 50,000,000 shares of common stock, $2.50 par value per share, and 10,000,000 shares of preferred stock, without par value.


                                INDEX
                            TO BY-LAWS OF
                           S&T BANCORP, INC.

ARTICLE I - MEETINGS OF SHAREHOLDERS

   Section 101.  Place of Meetings
   Section 102.  Annual Meetings
   Section 103.  Special Meetings
   Section 104.  Conduct of Shareholders' Meetings

ARTICLE II - DIRECTORS AND BOARD MEETINGS

   Section 201.  Management by Board of Directors
   Section 202.  Nomination for Directors
   Section 203.  Directors Must be Shareholders
   Section 204.  Eligibility and Mandatory Retirement
   Section 205.  Number of Directors
   Section 206.  Classification of Directors
   Section 207.  Vacancies
   Section 208.  Resignations
   Section 209.  Compensation of Directors
   Section 210.  Regular Meetings
   Section 211.  Special Meetings
   Section 212.  Chairman of the Board
   Section 213.  Vice Chairman of the Board
   Section 214.  Reports and Records

ARTICLE III - COMMITTEES

   Section 301.  Committees
   Section 302.  Executive Committee
   Section 303.  Audit Committee
   Section 304.  Appointment of Committee Members
   Section 305.  Organization and Proceedings

ARTICLE IV - OFFICERS

   Section 401.  Officers
   Section 402.  President
   Section 403.  Vice President
   Section 404.  Secretary
   Section 405.  Treasurer
   Section 406.  Assistant Officers
   Section 407.  General Powers

Page Two
Index to S&T Bancorp, Inc. By-Laws

ARTICLE V - INDEMNIFICATION

   Section 501.  Indemnification
   Section 502.  Insurance and Fund for Payment of Expenses
   Section 503.  Advancement of Expenses

ARTICLE VI - SHARES OF CAPITAL STOCK

   Section 601.  Authority to Sign Share Certificates
   Section 602.  Lost or Destroyed Certicates

ARTICLE VII - GENERAL

   Section 701.  Fiscal Year
   Section 702.  Record Date
   Section 703.  Absentee Participation in Meetings
   Section 704.  Emergency By-Laws
   Section 705.  Severability

ARTICLE VIII - AMENDMENT OR REPEAL

   Section 801.  Amendment or Repeal by the Board of Directors

ARTICLE IX - PENNSYLVANIA BUSINESS CORPORATION LAW AMENDMENT

   Section 901.  Applicability of Certain Provisions of the
                 Pennsylvania Business Corporation Law

Page

BYLAWS
OF
S&T BANCORP, INC.

These By-Laws are supplemental to the Pennsylvania Banking Code and other applicable provisions of law, as the same shall from time to time be in effect.

ARTICLE I. MEETINGS OF SHAREHOLDERS.

Section 101. Place of Meetings. All meetings of the shareholders shall be held at such place or places, within or without the Commonwealth of Pennsylvania, as shall be determined by the Board of Directors from time to time.

A written or printed notice of every such meeting shall be mailed, charges prepaid, at least ten days before the date of the meeting, (a) in the case of an individual, to his last known residence or place of business,
(b) in the case of an unincorporated association, or a corporation organized under the laws of the Commonwealth of Pennsylvania, to its principle office, and (c) in the case of a corporation incorporated under the laws of some other state, to its registered office in Pennsylvania, or if there is no registered office in Pennsylvania, to its home office in the State of its incorporation or in any other State.

Section 102. Annual Meetings. The annual meeting of the shareholders for the election of Directors and the transacton of such other business as may properly come before the meeting shall be held on such day, at such hour, and at such place, consistent with applicable laws, as the Board shall from time to time designate or as may be designated at any notice from the Secretary calling the meeting. Any business which is a proper subject for shareholder action may be transacted at the annual meeting, irrespective of whether the notice of said meeting contains any reference thereto, except as otherwise provided by applicable law.

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Section 103. Special Meetings. Special meetings of the shareholders may be called at any time by the Board of Directors, the President or by the shareholders entitled to cast at least one-fifth (1/5) of the vote which all shareholders are entitled to cast at the particular meeting. A written or printed notice for every special meeting, specifying the purpose and time and place thereof, shall be mailed by the Secretary to the share- holders of record, in the manner provided in Section I of this Article, at least ten (10) days before the date of such meeting.

Section 104. Conduct of Shareholders' Meeting. The Chairman of the Board, a Vice Chairman, the President, or such other appropriate officer, shall preside at all shareholders' meetings. The Officer presiding over the shareholders' meeting may establish such rules and regulations for the conduct of the meeting as he/she may deem to be reasonably necessary or desirable for the orderly and expeditious conduct of the meeting. Unless the Officer presiding over the shareholders' meeting otherwise requires, shareholders need not vote by ballot on any question.

ARTICLE II. DIRECTORS AND BOARD MEETINGS.

Section 201. Management by Board of Directors. The business and affairs of the Corporation shall be managed by its Board of Directors. The Board of Directors may exercise all such powers of the Corporation and do all such lawful acts and things as are not by statute, regulations, the Article of Incorporation or these By-Laws directed or required to be exercised or done by the shareholders.

Section 202. Nomination for Directors. Nominations for election to the Board of Directors may be made by the Board of Directors or by any holder or holders of any outstanding class of shares of the Corporation entitled to vote for the election of directors. Nominations for directors to be elected at an annual meeting of shareholders, other than those made by the Board of Directors or authorized Committee thereof, must be submitted to the Secretary of the Corporation in writing not earlier than the close of business on the 120th day, nor later than the close of business on the 60th day, immediately preceding the date of the meeting. Such notification shall contain the following information: (a) name and address of each proposed nominee; (b) the principal occupation of each proposed nominee; (c) the total number of shares of capital stock of the Corporation that are registered in the name of each proposed nominee; (d) the name and residence address of the notifying shareholder; (e) the number of shares of capital stock of the Corporation owned by the notifying shareholders and (f) such other information regarding the proposed nominee as would be required to be included in a proxy statement under Section 14(a) of the Securities Exchange Act of 1934, as amended (or any successor provision or statue), if proxies were solicited in connection with such proposed nominee's election. Nominations not made in accordance herewith may, in his or her discretion, be disregarded by the Presiding Officer of the meeting, and upon his or her instruction, the vote tellers may disregard all votes cast for each such nominee. In the event the same person is nominated by more than one shareholder, the nomination shall be honored, and all shares of capital stock of the Corporation shall be counted if at least one nomination for that person complies herewith.

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Section 203. Directors Must be Shareholders. Every Director must be a shareholder of the Corporation and shall own in his/her own right the number of shares (if any) required by law in order to qualify as such Director. Any Director shall forthwith cease to be a Director when he/ she no longer holds such shares, which fact shall be reported to the Board of Directors by the Secretary, whereupon the Board of Directors shall declare the seat of such Director vacated.

Section 204. Eligibility and Mandatory Retirement. Commencing with the annual meeting of the shareholders in 1983, no person shall be eligible to be newly elected or appointed as a Director after he/she shall have attained the age of seventy years on or prior to the date of his/her election. Any Director of this Corporation who attains the age of seventy years shall be retired as of the next Annual Meeting following the attainment of age seventy without any action on his/her part. Upon retirement from the Board of Directors due to age, as described above, said Director may be appointed by the active Board as a Director Emeritus.

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Section 205. Number of Directors. The Board of Directors shall consist of not less than twelve (12) nor more than twenty-five (25) persons, the exact number to be fixed and determined from time to time by resolution of a majority of the full Board of Directors. Notwithstanding anything contained in these By-Laws or in the Certificate of Incorporation of the Corporation to the contrary, either (i) the affirmative vote of at least sixty-six and two-thirds (66 2/3) percent of the outstanding shares of Common Stock entitled to vote generally in the election of directors voting together as a single class, or (ii) the affirmative vote of a majority of the full Board of Directors shall be required to alter, amend, adopt any provision inconsistent with or repeal this Section 205.

Section 206. Classification of Directors. The Directors shall be divided into three (3) classes, as equal in number as possible, known as Class 1, Class 2, and Class 3. Each class shall consist of not more than nine (9) Directors. The Directors of each class shall be elected for a term of three (3) years and, after expiration of such terms, their successors shall thereafter be elected every three (3) years for three (3) year terms. Each Director shall serve until his or her successor shall have been elected and shall qualify, even though his or her term of office has herein provided, has otherwise expired, except in the event of his/her earlier death, resignation, removal or disqualification from office. Notwithstanding anything contained in these By-Laws or in the Certificate of Incorporation of the Corporation to the contrary, either (i) the affirmative vote of at least sixty-six and two-thirds (66 2/3) percent of the outstanding shares of Common Stock entitled to vote generally in the election of directors, voting together as a single class, or (ii) the affirmative vote of a majority of the full Board of Directors shall be required to alter, amend, adopt any provision inconsistent with or repeal this Section 206.

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Section 207. Vacancies. Any Director elected to fill a vacancy in the Board of Directors shall become a member of the same Class of Director in which the vacancy existed unless the vacancy is due to an increase in number of Directors, in which case a majority of the members of the Board of Directors shall designate such directorship as belonging to Class 1, Class 2, or Class 3 so as to maintain the three (3) classes of Directors as equal in number as possible. Notwithstanding anything contained in these By-Laws or in the Certificate of the Corporation to the contrary, either (i) the affirmative vote of at least sixty-six and two-thirds (66 2/3) percent of the outstanding shares of Common Stock entitled to vote generally in the election of directors, voting together as a single class, or (ii) the affirmative vote of a majority of the full Board of Directors shall be required to alter, amend, adopt any provision inconsistent with or repeal this Section 207.

Section 208. Resignation. Any Director may resign at any time. Such resignations shall be in writing, but the acceptance thereof shall not be necessary to make it effective.

Section 209. Compensation of Directors. No Director shall be entitled to any salary as such; but the Board of Directors may fix, from time to time, a reasonable annual fee for acting as a Director and a reasonable fee to be paid each Director for his/her services in attending meetings of the Board and meetings of committees appointed by the Board. The Corporation may reimburse Directors for expenses related to their duties as a member of the Board.

Section 210. Regular Meetings. Regular meetings of the Board of Directors shall be held at such place within the Commonwealth of Pennsylvania as a majority of the directors may from time to time designate, or as may be designated in the notice calling the meeting. The Board of Directors shall meet for reorganizaiton at the first regular meeting following the annual meeting of shareholders at which the Directors are elected. Subsequent regular meetings of the Board of Directors shall be held at a time and place designated by the Board of Directors. At least two days notice of regular meetings shall be given.

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A majority of the members of the Board of Directors shall constitute a quorum for the transaction of business. If at the time fixed for the meeting, including the meeting to organize the new Board following the annual meeting of shareholders, a quorum is not present, the Directors in attendance may adjoun the meeting form time to time until a quorum is obtained.

Except as otherwise provided herein, a majority of those Directors present and voting at any meeting of the Board of Directors, shall decide each matter considered. A director cannot vote by proxy, or otherwise act by proxy at a meeting of the Board of Directors.

Section 211. Special Meetings. Special meetings of the Board of Directors may be called by the President or at the request of three (3) or more members of the Board of Directors. A special meeting of the Board of Directors shall be deemed to be any meeting other than the regular meeting of the Board of Directors. Written or printed notice of the time and place of every special meeting, which need not specify the business to be transacted there, shall be given by the Secretary to each member of the Board at least twenty-four (24) hours before the time of such meeting excepting the Organizational Meeting following the election of Directors.

Section 212. Chairman of the Board. The Chairman of the Board, a Vice Chairman, the President, or such other appropriate officer, shall preside at all meetings of the Board of Directors.

Section 213. Vice Chairman of the Board. The Board of Directors may elect one (1) or more Vice Chairman of the Board as the Board of Directors may from time to time deem advisable. The Vice Chairman of the Board shall have such duties as are prescribed by the Board of Directors.

Section 214. Reports and Records. The reports of Officers and Committees and the records of the proceedings of all Committees shall be filed with the Secretary of the Corporation and presented to the Board of Directors, if practical, at its next regular meeting. The Board of Directors shall keep complete records of its proceedings in a minute book kept for that purpose. When a Director shall request it, the vote of each Director upon a particular question shall be recorded in the minutes.

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ARTICLE III. COMMITTEES

Section 301. Committees. The following two (2) Committees of the Board of Directors shall be established by the Board of Directors in addition to any other Committee the Board of Directors may in its discretion establish: Executive, Audit Committee.

Section 302. Executive Committee. The Executive Committee shall consist of the President and any three (3) or more Directors. A majority of the members of the Executive Committee shall constitute a quorum, and actions of a majority of those present at a meeting at which a quorum is present shall be actions of the Committee. Meetings of the Committee may be called at any time by the Chairman, President or Secretary of the Committee, and shall be called whenever two (2) or more members of the Committee so request in writing. The Executive Committee shall have and exercise the authority of the Board of Directors in the management of the Board.

Section 303. Audit Committee. The Audit Committee shall consist of at least three (3) Directors, none of whom shall be Officers of the Corporation. Meetings of the Committee may be called at any time by the Chairman or Secretary of the Committee, and shall be called when- ever two (2) or more members of the Committee so request in writing. A majority of the members of the Committee shall constitute a quorum, and actions of a majority of those present at a meeting at which a quorum is present shall be actions of the Committee. The Committee shall supervise the audit of the books of the Corporation and recommend for approval by the Board the services of a reputable Certified Public Accounting firm to examine the affairs of the Corporation.

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Section 304. Appointment of Committee Members. The President shall appoint, subject to the approval of the Board of Directors, the members of the Executive and Audit Committees, and the Chairman of such Committee, to serve for the ensuing year. The Board of Directors may appoint, from time to time, other Committees, for such purposes and with such powers as the Board may determine.

Section 305. Organization and Proceedings. Each Committee of the Board of Directors shall effect its own organization by the appointment of a Secretary and such other Officers, except Chairman and Vice Chairman, as it may deem necessary. A record of proceedings of all Committees shall be kept by the Secretary of such Committee and filed and presented as provided in Section 214 of these By-Laws.

ARTICLE IV. OFFICERS

Section 401. Officers. The Officers of the Corporation shall be a Chairman, one (1) or more Vice Chairman, a President, one (1) or more Vice presidents, a Secretary, a Treasurer, and such other Officers and Assistant Officers as the Board of Directors may from time to time deem advisable. Except for the President, Secretary, Treasurer, the Board may refrain from filling any of the said offices at any time and from time to time. The same individual may hold any two (2) or more offices except both the offices of President and Treasurer. The following Officers shall be elected by the Board of Directors at the time, in the manner and for such terms as the Board of Directors from time to time shall determine: President, Executive Vice President, Senior Vice President, Adminstrative Vice President, Secretary, and Treasurer. The President may, subject to the change by the Board of Directors, appoint such Officers and Assistant Officers as he/she may deem advisable provided such Officers or Assistant Officers have a title not higher than Vice President, who shall hold office for such periods as the President shall determine. Any Officer may be removed at any time, with or without cause, and regardless of the term for which such Officers was elected, but without prejudice to any contract right of such Officer. Each Officer shall hold his office for the current year for which he was elected or appointed by the board unless he shall resign, becomes disqualified, or be removed at the pleasure of the Board of Directors.

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Section 402. President. The President shall have general supervision of all the departments and business of the Corporation and shall prescribe the duties of the other Officers and Employees and see to the proper performance thereof. The President shall be responsible for having all orders and resolutions of the Board of Directors carried into effect. The President shall execute on behalf of the Corporation and may affix or cause to be affixed a seal to all authorized documents and instruments requiring such execution, except to the extent that signing and execution thereof shall have been delegated to some other Officer or Agent of the Corporation by the Board of Directors or by the President. The President shall be a member of the Board of Directors. In the absence or disability of the Chairman of the Board or his/her refusal to act, a Vice Chairman, the President or other appropriate officer shall preside at meetings of the Board. In general, the President shall perform all the duties and exercise all the powers and authorities incident to such officer or as prescribed by the Board of Directors.

Section 403. Vice President. The Vice President shall perform such duties, do such acts and be subject to such supervision as may be prescribed by the Board of Directors or the President. In the event of the absence or disability of the President or his/her refusal to act, the Vice President, in the order of their rank, and within the same rank in the order of their authority, shall perform the duties and have the powers and authorities of the President, except to the extent inconsistent with applicable law.

Section 404. Secretary. The Secretary shall act under the supervision of the President or such other Officers as the President may designate. Unless a designation to the contrary is made at a meeting, the Secretary shall attend all meetings of Board of Directors and all meetings of the shareholders and record all proceedings of such meetings in a book to be kept for that purpose, and shall perform like duties for the standing Committees when required by these By-Laws or otherwise. The Secretary shall give, or cause to be given, notice of all meetings of shareholders and of the Board of Directors. The Secretary shall keep a seal of the Corporation, and, when authorized by the Board of Directors or the President, cause it to be affixed to any documents and instruments requiring it. The Secretary shall perform such other duties as may be prescibed by the Board of Directors, President, or such other Supervising Officer as the President may designate.

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Section 405. Treasurer. The Treasurer shall act under the supervision of the President, or such other Officer as the President may designate. The Treasurer shall have custody of the Corporation's funds and such other duties as may be prescribed by the Board of Directors, President or such other Supervising Officer as the President may designate.

Section 406. Assistant Officer. Unless otherwise provided by the Board of Directors, each assistant officer shall perform such duties as shall be prescribed by the Board of Directors, the President or the Officer to whom he/she is an Assistant. In the event of the absence or disability of an Officer or his/her refusal to act, his/her Assistant Officer shall, in the order of their rank, and within the same rank in the order of their seniority, have the powers and authorities of such Officer.

Section 407. General Powers. The Officers are authorized to do and perform such corporate acts as are necessary in the carrying on of the business of the Corporation, subject always to the direction of the Board of Directors.

ARTICLE V. INDEMNIFICATION

Section 501. Imdemnification. Each person who at any time is or shall have been a director or officer of the Corporation or any of its subsidiaries, or is serving or shall have served at the request of the Corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, and his or her heirs, executors and administrators, shall be indemnified by the Corporation in accordance with and to the full extent authorized or permitted by the laws of the Commonwealth of Pennsylvania as in effect at the time of such indemnification or as may hereafter be amended (but in the case of any such amendment, only to the extent that such amendment permits the Corporation to provide broader indemnification rights than permitted prior thereto).

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The foregoing right of indemnification shall constitute a contract between the Corporation and each of such persons and shall not be deemed exclusive of any other rights to which any director, officer, employee, agent or other person may be entitled in any capacity as a matter of law or under any by-law, agreement, vote of shareholders or disinterested directors, or otherwise, and shall not be affected adversely by any amendment of these Bylaws wih respect to any action or inaction occurring prior to such amendment. The Corporation may, by action of its Board of Directors and to the extent provided in such action, indemnify employees and other persons as though they were directors and officers eligible for indemnification under this section.

Section 502. Insurance and fund for Payment of Expenses. If authorized by the Board of Directors, the Corporation may purchase and maintain insurance on behalf of any person to the full extent authorized or permitted by the laws of the Commonwealth of Pennsylvania. The Corporation may create a fund of any nature which may, but need not be, under the control of a trustee, or otherwise may secure in any manner its indemnification and advancement of expenses obligation, whether arising under this Ariticle V or otherwise.

Section 503. Advancement of Expenses. The right to indemnification provided in Section 501 hereof shall include the right to be paid by the Corporation in advance of final disposition the expenses (including but not limited to attorneys' fees) incurred in defending any action or proceeding for which the Corporation is providing indemnification; provided, however, that if and to the extent the laws of the Commonwealth of Pennsylvania shall require and advancement of expenses shall be made only upon delivery to the Corporation of an undertaking, by or on behalf of such person, to repay any amounts advanced if it is ultimately determined that such person is not entitled to indemnification by the Corporation pursuant to these Bylaws or otherwise.

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ARTICLE VI. SHARES OF STOCK.

Section 601. Authority to Sign Share Certificates. Every share certificate of the Corporation shall be signed by the President and Treasurer or one of the Assistant Treasurers. Certificates may be signed by a facsimile signature of the President and Treasurer or one of the Assistant Treasurers of the Corporation.

Section 602. Lost or Destroyed Certificates. Any person claiming a share certificiate to be lost, destroyed or wrongfully taken shall receive a replacement certificate if such person shall have: (a) requested such replacement certificate before the Corporation has notice that the shares have been aquired by a bona fide purchaser; (b) provided the Corporation with an indemnity agreement satisfactory in form and substance to the Board of Directors, or the President or the Secretary; and (c) satisfied any other reasonable requirements (including providing an affidavit and a surety bond) fixed by the Board of Directors, or the President or the Secretary.

ARTICLE VII. GENERAL

Section 701. Fiscal Year. The fiscal year of the Corporation shall begin on the first (1st) day of January in each year and end on the thirty-first
(31st) day of December in each year.

Section 702. Record Date. The Board of Directors may fix any time whatesoever (whether or not the same is more than fifty (50) days) prior to the date of any meeting of shareholders, or the date for the payment of any dividend or distribution, or the date for the allotment of rights, or the date when any change or conversion or exchange of shares will be made or will go into effect, as a record date for the determination of the shareholders entitled to notice of, or to vote at, any such meetings, or entitled to receive payment of any such dividend or distribution, or to exercise the rights in respect to any such change, conversion or exchange of shares.

Section 703. Absentee Participation in Meetings. One (1) or more Directors may participate in a meeting of the Board of Directors, or of a Committee of the Board, by means of a conference telephone or similar communication equipment, by means of which all persons participating in the meeting can hear each other.

Section 704. Emergency By-Laws. In the event of any emergency resulting from a nuclear attack or similar disaster, and during the continuance of such emergency, the following Bylaw provisions shall be in effect, notwithstanding any other provisions of the Bylaws:

(a) A meeting of the Board of Directors or any of any Committee thereof may be called by any Officer or Director upon one (1) hour's notice to all persons entitled to notice whom, in the sole judgment of the notifier, it is feasible to notify;

(b) The Director or Directors in attendance at the meeting of the Board of Directors or of any Committee thereof shall constitute a quorum; and

(c) These Bylaws may be amended or repealed, in whole or in part, by a majority vote of the Directors attending any meeting of the Board of Directors, provided such amendment or repeal shall only be effective for the duration of such emergency.

Section 705. Severability. If any provision of these By-Laws is illegal or unenforceable as such, such illegality or unforceability shall not effect any other provision of these By-Laws and such other provisions shall continue in full force and effect.

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ARTICLE VIII. AMENDMENT OR REPEAL.

Section 801. Amendment or Repeal by the Board of Directors. These By-Laws may be amended or repealed, in whole or in part, by a majority vote of members of the Board of Direcotrs at any regular or special meeting of the Board duly governed. Notice need not be given of the purpose of the meeting of the Board of Direcotrs at which the amendment is to be considered.

ARTICLE IX. APPLICABILITY OF CERTAIN PROVISIONS OF THE PENNSYVANIA BUSINESS CORPORATION LAW.

Section 901. 1990 Anti-takeover Amendments. Subchapters G (relating to Control Share Acquisition), H (relating to Disgorgement by Certain Controlling Shareholders Following Attempts to Acquire Control), I (relating to Severance Compensaion for Employees Terminated Following Certain Control-Share Acquisitions), and J (relating to the status of Labor Contracts following certian Business Combination Transactions) of Chapter 25 of the Pennsylvania Business Corporation Law of 1988 (the "BCL") shall not be applicable to the Corporation.

Section 511(d), (e), and (f), and Sections 1721(e), (f) and (g) of the BCL shall not be applicable to the Corporation. The Corporation shall be governed by Sections 1721(c) and (d) of the BCL. In adopting this paragraph of this
Section 901, while intending thereby to indicate the importance of all of the shareholders' interest the Board of Directors does not intend to limit its ability to to opose a tender offer, or limit its discretion when considering whether to oppose a tender offer, in accordance with Section 8(A) of the Corporation's Articles of Incorporation or otherwise; nor does it intend to limit the factors and interests which it, committees of the Board, and individual directors may consider in considering the best interests of the Corporation, either as provided in Section 8(A) of the Corporation's Articles of Incorporation or otherwise; nor does it intend to impose limits upon the ability of the Board, committees of the Board and individual directors in considering the best interest of the Corporation or the effects of any action, to consider and to balance and weigh such factors and interest to the extent they deem appropriate, either as provided in Section 8(A) of the Corporation's Articles of Incorporation or otherwise; nor does it intend to limit the discretion of the Board, committees of the Board, or individual directors in exercising the powers vested in the Corporation, including, but not limited to, their ability to take the actions described in Section 8(B) of the Corporations Articles of Incorporation.


Management's Discussion and Analysis of
Financial Condition and Results of Operations S&T Bancorp, Inc. and Subsidiaries

Financial Condition

The $160.2 million growth of average earning assets in 1998 was primarily the result of an excellent lending year for S&T Bancorp, Inc. (S&T), combined with increases in the investment portfolio to maximize net interest income by taking advantage of low, short-term funding rates and investing in U.S. government agency securities. Average loan balances increased by $80.3 million during 1998 and average securities and federal funds increased $79.9 million during 1998. The bulk of funding for this loan and security growth was provided by a $57.2 million increase in average deposits, a $12.9 million increase in average earnings retained and a $105.3 million increase in average borrowings.

                                         1998                        1997
                                                   Loan                   Loan
                                   Loan     Balance       Loan     Balance
Loan Portfolio (in millions)                 Balance     Percentage        Balance       Percentage

Commercial, Mortgage and
 Industrial                                   $  760.0      56%         $  630.4           50%
Residential Real Estate
 Mortgage                                          492.6            36            512.4    40
Installment                                      113.3       8            131.0           10
     Total Loans                                 $1,365.9    100%       $1,273.8   100%

Lending Activity

Total loans at December 31, 1998 were $1.4 billion, a $92.1 million or 7.2% increase from December 31, 1997. Increases in average loans for 1998 and 1997 were $80.3 million and $103.5 million, respectively.

Changes in the composition of the loan portfolio during 1998 included increases of $129.6 million of commercial loans offset by decreases of $19.8 million of residential mortgages and a $17.7 million decrease in installment loans. Composition changes include decreases from the effects of $10.9 million of 1-4 family mortgage loans and $15.2 million of commercial loans that were sold or participated in 1998.

Commercial loans currently comprise 56% of the loan portfolio. Although commercial loans can be an area of higher risk, management believes these risks are properly managed by limiting the percentage amount of portfolio composition, a rigorous underwriting review by loan administration and the fact that many of the commercial loans are secured by real estate and are owner occupied.

Residential mortgage lending continued to be a strategic focus for 1998 through the establishment of a centralized mortgage origination department, product redesign, secondary market activities and the utilization of commission compensated originators. Management believes that if a downturn in the local residential real estate market occurs, the impact of declining values on the residential real estate loan portfolio will be properly managed because of S&T's conservative mortgage lending policies for portfolio loans which generally require a maximum term of 20 years for fixed rate mortgages, and private mortgage insurance for loans with less than a 20% down payment. Adjustable rate mortgages with repricing terms of one, three and five years comprised 23% of the residential mortgage portfolio in 1998.

During the fourth quarter of 1997, S&T sold $12.7 million of long-term, lower-yielding 1-4 family mortgages, acquired from the Peoples Bank of Unity (Peoples) merger, to the Federal National Mortgage Association (FNMA). S&T retained the ongoing servicing rights on the mortgages sold and will originate 1-4 family mortgages in the future to be sold to FNMA. The rationale for these sales is to mitigate interest rate risk associated with holding long-term residential mortgages in the loan portfolio, to generate fee revenue from servicing, and still maintain the primary customer relationship. During 1998, S&T sold $10.9 million of 1-4 family mortgages to FNMA. Fees and gains from mortgage servicing activities were $0.3 million in 1998. S&T will continue to sell longer-term loans to FNMA in the future on a selective basis, especially during periods of lower interest rates.

Installment loan decreases are primarily associated with significantly lower volumes in the indirect auto loan category. During the fourth quarter of 1998, S&T exited the indirect automobile business. Pricing pressures were unusually intense in the indirect market during 1998 and 1997, and the decision was made to deploy investable funds and staff resources into other, higher yielding and lower risk earning assets. Installment loans have also decreased due to recent changes in government regulations which have significantly decreased the profit potential of guaranteed student loans. The remaining student loan portfolio of $7.0 million was sold in 1997. S&T will continue to distribute student loan applications for customer convenience, but will not fund or hold the loans.

Loan underwriting standards for S&T are established by a formal policy administered by the S&T Bank Credit Administration Department, and subject to the periodic review and approval of the S&T Bank Board of Directors.

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Rates and terms for commercial real estate and equipment loans normally are negotiated, subject to such variables as economic conditions, marketability of collateral, credit history of the borrower and future cash flows. The loan to value policy guideline for commercial real estate loans is generally 75%.

Residential, first lien, mortgage loan to value policy guideline is 80%. Higher loan to value loans can be approved with the appropriate private mortgage insurance coverage. Second lien positions are sometimes incurred with home equity loans, but normally only to the extent that the combined credit exposure for both first and second liens does not exceed 100% loan to value.

A variety of unsecured and secured installment loan and credit card products are offered by S&T. However, the bulk of the consumer loan portfolio is automobile loans. Loan to value guidelines for direct loans are 90%-100% of invoice for new automobiles and 80-90% of "NADA" value for used automobiles. Loan to value policy guidelines for automobile loans purchased from dealers on a third-party basis were 90%-125% of invoice for new automobiles and 100%-125% of "Black Book" value for used automobiles. As noted previously, S&T exited the indirect automobile business in the fourth quarter of 1998 and will allow the remaining portfolio of $33.7 million to amortize through normal payments and payoffs.

Management intends to continue to pursue quality loans in all lending categories within our market area in order to honor our commitment to provide the best service possible to our customers. S&T's loan portfolio primarily represents loans to businesses and consumers in our market area of western Pennsylvania rather than to borrowers in other areas of the country or to borrowers in other nations. S&T has not concentrated its lending activities in any industry or group. During the past several years, management has concentrated on building an effective credit and loan administration staff which assists management in evaluating loans before they are made and identifies problem loans early.

Security Activity

Average securities increased $83.8 million in 1998 and decreased $16.0 million in 1997. The 1998 increase is due to increasing the investment portfolio to maximize net interest income by taking advantage of low, short-term funding rates and investing in U.S. government agency securities, classified as available for sale. Interest rate risk associated with this strategy is managed and monitored through S&T's Asset Liability Committee (ALCO). The 1997 decrease is attributable to utilizing funds from the maturities and sales of securities to fund loan growth and balance sheet repositioning activities following the Peoples merger.

The largest components of the 1998 increase included $98.9 million of U.S. government agency securities, $3.4 million in other corporate securities, $3.5 million in corporate equities and $4.8 million in Federal Home Loan Bank (FHLB) stock. The FHLB stock is a membership and borrowing requirement. Offsetting these increases are decreases of $13.2 million in U.S. treasury securities, $0.2 million in mortgage-backed securities and $13.4 million in tax-exempt state and municipal securities.

During 1998, S&T sold $20.3 million of equity securities classified as available for sale. The sales were made in order to maximize returns when market opportunities are presented. Additionally, S&T may receive an exchange of shares relative to a merger; gains and losses are recognized on shares held of acquired institutions in accordance with Emerging Issues Task Force #91-5, Nonmonetary Exchange of Cost-Method Investments (EITF 91-5). The equity securities portfolio is primarily comprised of bank holding companies, as well as preferred and utility stocks to take advantage of the dividends received deduction for corporations. During 1998, the equity portfolio yielded 10.2% on a fully taxable equivalent basis and had unrealized gains at December 31, 1998, net of nominal unrealized losses, of $55.1 million.

S&T's policy for security classification includes U.S. treasuries, U.S. government agencies, mortgage-backed securities and marketable equity securities as available for sale. Municipal securities and other corporate debt securities are classified as held to maturity. At December 31, 1998, unrealized gains, net of nominal unrealized losses, for securities classified as available for sale were approximately $61.5 million.

Nonearning Assets

Average nonearning assets increased $5.8 million in 1998 and $2.0 million in 1997. The 1998 and 1997 increases can be primarily attributed to an increase in cash and due from and in accrued interest receivable on a higher earning asset balance. Cash and due from growth is primarily related to increased federal reserve requirements and check clearing balances resulting from demand deposit growth and higher level of cash management activities for customers.

Allowance for Loan Losses

The year-end balance in the allowance for loan losses increased to $26.7 million or 1.95% of total loans at December 31, 1998 as compared to $20.4 million or 1.60% of total loans at December 31, 1997.

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                                                1998                              1997
                                           Loan                            Loan
                               Allowance   Balance     Allowance    Balance
Allowance for Loan Loss        Balance          Percentage  Balance          Percentage
(in millions)

Commercial, Mortgage and
 Industrial                               $16.9         56%             $13.5           50%
Residential Real Estate
 Mortgage                                     1.1               36                 0.8          40
Installment                                2.6           8                 1.9          10
Unallocated                                6.1           -                 4.2            -
 Total Allowance for Loan
 Losses                               $26.7            100%             $20.4          100%

The adequacy of the allowance for loan losses is determined by management through evaluation of the loss potential on individual nonperforming, delinquent and high-dollar loans; review of economic conditions and business trends; historical loss experience; and growth and composition of the loan portfolio, as well as other relevant factors.

A quantitative analysis is utilized to support the adequacy of the allowance for loan losses. This analysis includes review of the high and low historical charge-off rates for loan categories, fluctuations and trends in the amount of classified loans and economic factors. Economic factors consider the level of S&T's historical charge-offs that have occurrence within the credits economic life cycle.

Significant to this analysis is the shift in loan portfolio composition to an increased mix of commercial loans. These loans are generally larger in size and, due to our continuing growth, many are not well seasoned and could be more vulnerable to an economic slowdown. Management relies on its risk rating process to monitor trends which may be occurring relative to commercial loans to assess potential weaknesses within specific credits. Current economic factors and trends in risk ratings are considered in the determination of the allowance for loan losses.

Net loan charge-offs totaled $4.3 million in 1998, including $2.0 million related to a floor plan loan to an automobile dealership, compared to $3.3 million in 1997. The balance of nonperforming loans, which includes nonaccrual loans past due 90 days or more, at December 31, 1998, was $2.9 million or 0.21% of total loans. This compares to nonperforming loans of $3.6 million or 0.28% of total loans at December 31, 1997.

Asset quality is a major corporate objective at S&T, and management believes that the total allowance for loan losses is adequate to absorb probable loan losses.

Deposits

Average total deposits increased by $57.2 million in 1998 and $39.0 million in 1997. The mix of average deposits in 1998 changed, with time deposits and money market accounts increasing $16.5 million and $31.5 million, respectively, while interest- bearing demand and savings accounts decreased $12.9 million. Noninterest-bearing deposits increased by $22.1 million or 13.7% in 1998 and were approximately 14% and 13% of total deposits during 1998 and 1997, respectively. Some of the changes can be partially explained by strategic initiatives to increase demand accounts and cash management services. In addition, a new, successful strategy for money market account pricing was implemented in order to make these accounts more competitive with money funds offered at brokerage firms. In September 1998, S&T purchased a branch in Clarion, Pa. and assumed $39.0 million of deposits.

Management believes that the S&T deposit base is stable and that S&T has the ability to attract new deposits, mitigating a funding dependency on volatile liabilities. Special rate deposits of $100,000 and over were 7% of total deposits during 1998 and 1997, respectively, and primarily represent deposit relationships with local customers in our market area. In addition, S&T has the ability to access both public and private markets to raise long- term funding, if necessary. During 1995, S&T issued $25.0 million of retail certificates of deposit through two brokerage firms, further broadening the availability of reasonably priced funding sources. At December 31, 1998, there were $11.6 million of these brokered retail certificates of deposit outstanding.

Borrowings

Average borrowings increased $105.3 million in 1998 and were comprised of securities sold under repurchase agreements (REPOS), federal funds purchased and long-term borrowings at the FHLB. S&T defines REPOS with its retail customers as retail REPOS; wholesale REPOS are those transacted with other banks and brokerage firms with terms normally ranging from one to 14 days.

The average balance in retail REPOS increased approximately $9.1 million for 1998 and decreased $11.3 million for 1997. The 1998 increase is primarily attributable to new REPO sweep relationships in our cash management department. S&T views retail REPOS as a relatively stable source of funds since most of these accounts are with local, long-term customers.

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Wholesale REPOS and federal funds purchased averaged $87.1 million in 1998, an increase of $34.1 million from the 1997 averages. The aforementioned increase in the investment portfolio increased the usage of wholesale REPO fundings in 1998.

The interest rate risk of various funding strategies is managed through ALCO. During 1997, ALCO authorized three additional long- term borrowings of $11.0 million at a fixed rate and $50.0 million at an adjustable rate with the FHLB. At December 31, 1998, S&T had long-term borrowings outstanding of $60.8 million at a fixed rate and $119.6 million at an adjustable rate with the FHLB. The purpose of these borrowings was to provide matched fundings for newly originated loans, to mitigate the risk associated with volatile liabilities, to take advantage of lower cost funds through the FHLB's Community Investment Program and to fund stock buy-backs.

Another ALCO strategy used to manage interest rate risk is the use of interest rate swaps. At December 31, 1998, S&T had notional values totaling $10.0 million in interest rate swaps. S&T pays a fixed rate of 5.3% on these instruments and receives a variable rate based upon the London Interbank Offer Rate. The purpose of these off-balance sheet arrangements is to lock-in funding costs of fixed rate loans.

Trust Assets

The year-end market value balance of the S&T Bank trust department assets, which are not accounted for as part of the assets of S&T, increased 12% in 1998 and 24% in 1997. These increases were a result of management's effort to expand the marketing of trust products and services and general increases in the debt and equity markets during the periods.

Results of Operations
Year Ended December 31, 1998

Net Income

Net income was a record $38.0 million or $1.35 per diluted earnings per share in 1998, representing a 15% increase from the $33.4 million or $1.17 per diluted earnings per share in 1997. The return on average assets increased to 1.90% for 1998, as compared to 1.84% for 1997. The return on average equity increased to 14.80% for 1998, compared to 13.71% for 1997. Increases to the net interest margin and other revenue contributed significantly to this enhanced earnings performance.

Net Interest Income

On a fully taxable equivalent basis, net interest income increased $3.2 million or 4% for 1998 compared to 1997. The net yield on interest-earning assets decreased to 4.61% in 1998 as compared to 4.85% in 1997. The decline in the net yield on interest-earning assets during 1998 was primarily attributed to the balance sheet growth with securities, as well as the Modified Dutch Tender Offer earlier this year that repurchased approximately 880,000 shares of S&T common stock. Net interest income was positively affected by $160.2 million or a 9% increase in average earning assets.

In 1998, average loans increased $80.3 million and average securities increased $83.8 million, comprising most of the earning asset growth. The yields on average loans increased by seven basis points and the yields on average securities declined 30 basis points.

Average interest-bearing deposits provided $57.2 million of the funds for the growth in average earning assets, at a cost of 4.34% in 1998 as compared to 4.33% in 1997.

Average increases of $106.7 million in REPOS and other borrowed funds provided additional funding. The cost of these funds decreased 15 basis points during 1998. During 1998, more longer- term borrowings were utilized in order to mitigate interest rate risk.

Also positively affecting net interest income was a $19.8 million increase to average net free funds. Average net free funds are the excess of demand deposits, other noninterest-bearing liabilities and shareholders' equity over nonearning assets.

Maintaining consistent spreads between earning assets and costing liabilities is very significant to S&T's financial performance since net interest income comprised 86% of operating revenue. The level and mix of earning assets and funds is continually monitored by ALCO in order to mitigate the interest rate sensitivity and liquidity risks of the balance sheet. A variety of asset/liability management strategies were successfully implemented, within prescribed ALCO risk parameters, that enabled S&T to maintain a net interest margin consistent with historical levels.

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Provision for Loan Losses

The provision for loan losses is an amount added to the allowance against which loan losses are charged. The provision for loan losses was $10.6 million for 1998 compared to $5.0 million in 1997. The provision expense and the adequacy of the allowance for loan losses is determined based upon management's assessment of economic conditions, credit quality statistics, loan administration effectiveness and other factors that would have an impact on probable losses in the loan portfolio. Also affecting the amount of provision expense is loan growth, portfolio composition and trends within risk ratings.

Credit quality statistics are an important factor in determining the amount of provision expense. Net loan charge-offs totaled $4.3 million for 1998 compared to $3.3 million for 1997. Included in the charge-offs for 1998 is $2.0 million related to a floor plan loan to one automobile dealership. Nonperforming loans to total loans decreased to 0.21% at December 31, 1998.

Also affecting the amount of provision expense is loan growth and portfolio composition. Most of the loan growth in 1998 is attributable to larger-sized commercial loans.

Noninterest Income

Noninterest income increased $8.0 million or 49% in 1998 compared to 1997. Increases included $0.5 million or 15% in trust income, $0.9 million or 21% in service charges and fees, a $1.3 million or 40% increase in other income and a $5.3 million or 97% increase in security gains.

The increase in trust income was attributable to bank-wide incentive programs and expanded marketing efforts designed to develop new trust business and to develop new relationships within the Allegheny County market.

The increase in service charges on deposit accounts was primarily the result of management's continual effort to implement reasonable fees for services performed and to manage closely the collection of these fees, as well as the implementation of foreign ATM convenience fees in the fourth quarter of 1997.

The increase in other income was a result of increased performance for brokerage and insurance commissions, letters of credit fees, covered calls, debit card commissions, and mortgage servicing income, as well as $0.4 million of nonrecurring gains recognized from oil and gas producing properties that were sold during the third quarter of 1998. These areas were the focus of several 1998 strategic initiatives and product enhancements implemented in order to expand this source of revenue.

S&T recognized $10.7 million of gains on equity securities during 1998. Gains of $5.2 million were the result of EITF 91-5. This accounting pronouncement requires the mark to market of equity securities when an acquisition of the company in which securities are owned occurs. EITF 91-5 gains recognized included $2.6 million from the First Union/Corestates merger, $0.4 million from the CFX/Peoples Heritage merger and $2.2 million from the First Commonwealth/Southwest merger. The remaining security gains were primarily attributable to the sale of equity securities in order to maximize returns by taking advantage of market opportunities when presented.

Noninterest Expense

Noninterest expense decreased $1.2 million or 3% in 1998 compared to 1997. The decrease is primarily attributable to $2.2 million of merger-related and other nonrecurring expenses associated with the acquisition of Peoples during 1997. Merger-related and other nonrecurring expenses included costs for severance and early retirement programs, the write-off and conversion of data processing systems, as well as legal, accounting and investment banker expenses. Other expenses of $0.9 million were provided for during 1998 and included $0.2 million of consulting fees for the redesigning of retail loan delivery services, $0.3 million for Year 2000 project costs and $0.3 million of costs associated with the conversion of data processing systems for a branch purchase.

Recurring expenses were relatively flat during 1998 as compared to 1997 and reflect normal activity increases. Severance and early retirement programs were implemented in May 1997 in order to eliminate duplicate positions following post-merger restructuring and consolidation of operations. Average full-time equivalent staff decreased from 665 to 659 in 1998. S&T's efficiency ratio, which measures noninterest expense as a percent of recurring noninterest income plus net interest income on a fully taxable equivalent basis, was 42% and 44% in 1998 and 1997, respectively.

Federal Income Taxes

Federal income tax expense increased $2.6 million to $16.2 million in 1998 as a result of higher pretax income in 1998. The 1998 effective tax rate of 30% was below the 35% statutory tax rate due to the tax benefits resulting from tax-exempt interest, excludable dividend income and the tax benefits associated with Low Income Housing Tax Credit (LIHTC) projects. S&T currently does not incur any alternative minimum tax.

PAGE 25

Results of Operations
Year Ended December 31, 1997

Net Income

Net income was a record $33.4 million or $1.17 per diluted earnings per share in 1997, representing a 17% increase from the $28.2 million or $1.00 per diluted earnings per share in 1996. The return on average assets increased to 1.84% for 1997, as compared to 1.65% for 1996. The return on average equity increased to 13.71% for 1997, compared to 13.01% for 1996. Increases to the net interest margin and other revenue contributed significantly to this enhanced earnings performance.

Net Interest Income

On a fully taxable equivalent basis, net interest income increased $4.8 million or 6% for 1997 compared to 1996. The net yield on interest-earning assets was essentially unchanged, increasing by two basis points to 4.85%. Net interest income was positively affected by the $91.1 million or 6% increase in average earning assets.

In 1997, average loans increased $103.5 million, offset by an average securities decrease of $16.0 million, comprising most of the earning asset growth. The yields on average loans increased by two basis points while the yields on average securities remained constant.

Average interest-bearing deposits provided $39.0 million of the funds for the growth in average loans, at a cost of 4.33%, relatively unchanged from 1996. The cost of REPOS and other borrowed funds increased 12 basis points during 1997. During 1997, more longer-term borrowings were utilized in order to mitigate interest rate risk.

Also positively affecting net interest income was a $33.1 million increase to average net free funds. Average net free funds are the excess of demand deposits, other noninterest-bearing liabilities and shareholders' equity over nonearning assets.

Maintaining consistent spreads between earning assets and costing liabilities is very significant to S&T's financial performance since net interest income comprised 88% of operating revenue. The level and mix of earning assets and funds is continually monitored by ALCO in order to mitigate the interest rate sensitivity and liquidity risks of the balance sheet. A variety of asset/liability management strategies were successfully implemented, within prescribed ALCO risk parameters, that enabled S&T to maintain a net interest margin consistent with historical levels.

Provision for Loan Losses

The provision for loan losses is an amount added to the allowance against which loan losses are charged. The provision for loan losses was $5.0 million for 1997 compared to $5.2 million in 1996. The provision expense is the result of management's assessment of economic conditions, credit quality statistics, loan administration effectiveness and other factors that would have an impact on probable losses in the loan portfolio.

Credit quality statistics are an important factor in determining the amount of provision expense. Net loan charge-offs totaled $3.3 million for 1997 compared to $3.5 million for 1996. Nonperforming loans to total loans decreased to 0.28% at December 31, 1997.

Also affecting the amount of provision expense is loan growth. Despite a $103.5 million or 9% increase in average loans, S&T's allowance for loan losses to total loans was 1.60% at December 31, 1997, as compared to 1.56% at December 31, 1996.

Noninterest Income

Noninterest income increased $4.4 million or 37% in 1997 compared to 1996. Increases included $0.3 million or 12% in trust income, $0.5 million or 14% in service charges and fees, a $0.2 million or 5% increase in other income and a $3.4 million or 147% increase in security and nonrecurring gains.

The increase in trust income was attributable to bank-wide incentive programs and expanded marketing efforts designed to develop new trust business and to develop new relationships within the Allegheny County market. The increase in service charges on deposit accounts was primarily the result of management's continual effort to implement reasonable fees for services performed and to manage closely the collection of these fees, as well as the implementation of foreign ATM convenience fees in the fourth quarter of 1997. The increase in other income was a result of increased performance for brokerage activities, letters of credit and fees on covered call options. These areas were the focus of several 1997 strategic initiatives and product enhancements implemented in order to expand this source of revenue.

Security and nonrecurring gains were primarily attributable to the sales of equity securities in order to maximize returns by taking advantage of market opportunities when presented. Also included is $0.5 million of gains related to the donation of appreciated equity securities to the S&T Charitable Foundation. Nonrecurring gains included $0.3 million of gains from student loan and residential mortgage loan sales.

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Noninterest Expense

Noninterest expense increased $0.8 million or 2% in 1997 compared to 1996. The increase is primarily attributable to increased employment, occupancy, data processing and other expenses associated with the acquisition of Peoples during the second quarter of 1997, offset by higher Federal Deposit Insurance Corporation (FDIC) insurance expense in 1996 relating to the one- time surcharge on any financial institution holding Savings Association Insurance Fund (SAIF) deposits. S&T's efficiency ratio, which measures noninterest expense as a percent of recurring noninterest income plus net interest income on a fully taxable equivalent basis, was 44% and 48% in 1997 and 1996, respectively.

Staff expense increased 5% or $1.1 million in 1997. The increase resulted from normal merit increases, and costs for severance and early retirement programs related to the acquisition of Peoples that eliminated duplicate positions. Average full-time equivalent staff decreased from 677 to 665 in 1997. Severance and early retirement programs were implemented in May 1997.

Occupancy and equipment expense, data processing and other expenses increased 4% or $0.7 million in 1997 as compared to 1996. The increase is primarily attributable to a $0.8 million funding of S&T's Charitable Foundation, and to accounting, professional consulting and legal fees related to the acquisition of Peoples, offset by reduced FDIC insurance costs. The donation to the S&T Charitable Foundation will allow S&T to fund community contributions well into the future and help control future costs. Expense increases to occupancy, equipment, marketing and data processing include merger costs. Recurring costs and other charges were not significant and reflect normal activity increases, organization expansion and fee increases from vendors. Offsetting these costs was a $0.3 million reduction of goodwill amortization relating to a 1991 branch acquisition.

FDIC premium expense decreased by 80% during 1997 as a result of recapitalization legislation passed in September 1996. S&T Bank pays an annual premium of $.013 per $100 in Bank Insurance Fund (BIF) deposits and $.0648 per $100 on SAIF deposits, the lowest premium possible under the FDIC's risk assessment program for determining deposit insurance premiums. The SAIF fund was recapitalized by imposing a one-time surcharge of 65.6 basis points on any financial institution holding SAIF deposits. This surcharge resulted in an expense of $0.9 million during the third quarter of 1996. S&T Bank has $168.1 million of deposits subject to the SAIF. These deposits are related to a thrift institution and branches acquired from the Resolution Trust Corporation in 1991.

Federal Income Taxes

Federal income tax expense increased $3.6 million to $13.6 million in 1997 as a result of higher pretax income in 1997 and nondeductible merger related expenses. The 1997 effective tax rate of 29% was below the 35% statutory tax rate due to the tax benefits resulting from tax-exempt interest, excludable dividend income and the tax benefits associated with LIHTC projects. S&T currently does not incur any alternative minimum tax.

Liquidity and Interest Rate Sensitivity

Liquidity refers to the ability to satisfy the financial needs of depositors who want to withdraw funds or borrowers needing access to funds to meet their credit needs. Interest rate sensitivity management seeks to avoid fluctuating net interest margins and to enhance net interest income through periods of changing interest rates. ALCO is responsible for establishing and monitoring the liquidity and interest rate sensitivity guidelines, procedures and policies.

The principal sources of asset liquidity are cash and due from banks, interest-earning deposits with banks, federal funds, investment securities that mature in one year or less and the market value of securities available for sale. At December 31, 1998, the total of such assets was approximately $671.0 million or 32% of consolidated assets. However, liability liquidity is much more difficult to quantify, but is further enhanced by a stable core deposit base, access to credit lines at other financial institutions and S&T's ability to renew maturing deposits. Certificates of deposit in denominations of $100,000 or more represented 7% of deposits at December 31, 1998 and were outstanding primarily to local customers. S&T's ability to attract deposits and borrowed funds depends primarily on continued rate competitiveness, profitability, capitalization and overall financial condition.

Beyond the issue of having sufficient sources to fund unexpected credit demands or deposit withdrawals, liquidity management also is an important factor in monitoring and managing interest rate sensitivity issues through ALCO. Through forecast and simulation models, ALCO is also able to project future funding needs and develop strategies for acquiring funds at a reasonable cost.

ALCO uses a variety of measurements to monitor the liquidity position of S&T. These include liquidity gap, net alternative funding resources, net loans to assets, net loans

PAGE 27

to deposits, volatile liabilities and liquidity ratio. As of December 31, 1998, all of these measurements were in compliance with ALCO policy limitations.

Because the assets and liabilities of S&T are primarily monetary in nature, the presentation and analysis of cash flows in formats prescribed by Financial Accounting Standards Board Statement No.
95 "Statement of Cash Flows" (Statement No. 95), are less meaningful for managing bank liquidity than for other non- financial companies. Funds are typically provided from current earnings, maturity and sales of securities available for sale, loan repayments, deposits and borrowings. The primary uses of funds include new loans, repayment of borrowings, the purchase of securities and dividends to shareholders. The level and mix of sources and uses of funds are constantly monitored and adjusted by ALCO in order to maintain credit, liquidity and interest rate risks within prescribed policy guidelines while maximizing earnings.

ALCO monitors and manages interest rate sensitivity through gap, simulation and duration analyses in order to avoid unacceptable earnings fluctuations due to interest rate changes. S&T's gap model includes certain management assumptions based upon past experience and the expected behavior of customers during various interest rate scenarios. The assumptions include principal prepayments for mortgages, installment loans and mortgage-backed securities and classifying the demand, savings and money market balances by degree of interest rate sensitivity. Utilizing the above assumptions results in ratios of interest rate sensitive assets to interest rate sensitive liabilities for the six-month and 12-month intervals ended December 31, 1998 of 1.00% and 1.07%, respectively. Assuming immediate repricings for interest- bearing demand, savings and money market accounts, these ratios would be 0.72% and 0.85%, respectively.

In addition to the gap analysis, S&T performs an earnings sensitivity analysis to identify more dynamic interest rate risk exposures. The earnings simulation model is used to estimate the effect that specific interest rate changes would have on 12 months of net interest income. Derivative financial instruments are included in this exercise. The model incorporates management assumptions regarding the level of interest rate or balance changes on indeterminate maturity deposit products (savings, money market, NOW and demand deposits) for a given level of market rate changes. These assumptions have been developed through a combination of historical analysis and future expected customer behavior. Interest rate caps and floors on all products are included to the extent that they become effective in the 12- month simulation period. Additionally, changes in prepayment behavior of the residential mortgage portfolio in each rate environment are captured using management estimates. Finally, the impact of planned growth and anticipated new business activities is factored into the simulation model.

S&T's policy objective is to limit the change in net interest income to 3% from an immediate and sustained parallel change in interest rates of 200 basis points. As of December 31, 1998 and 1997, respectively, S&T had the following estimated earnings sensitivity profile:

                                                     Immediate
                                                  Change in Rates
(in millions)                              +200bp             -200bp
1998 Pretax earnings change                  $(2.1)            $0.2
1997 Pretax earnings change                    1.2              (0.8)

Results of the gradual simulation model, showing changes from current rates by 200 basis points over a 12-month period as of December 31, 1998 and 1997, respectively, are presented below.

                                                      Gradual
                                                  Change in Rates
(in millions)                              +200bp             -200bp
1998 Pretax earnings change                  $(1.3)            $(0.9)
1997 Pretax earnings change                    0.5                0.2

Capital Resources

Shareholders' equity increased $0.5 million at December 31, 1998 compared to December 31, 1997. The primary source of equity growth for S&T is earnings retention. Hence, capital growth is a function of net income less dividends paid to shareholders and treasury stock activities.

Net income was $38.0 million and dividends declared to shareholders were $18.3 million for 1998. S&T paid 46% of 1998 net income in dividends, equating to an annual dividend rate of $0.66 per share. The slight increase in capital is attributable to the conclusion of the Modified Dutch Auction in which S&T repurchased approximately 880,000 shares of its common stock. During 1998, S&T repurchased an additional 238,000 shares of its common stock. An authorization to buy back up to 1,000,000 additional shares in 1999 was authorized by the S&T Board of Directors. Also affecting capital was a decrease of $0.6 million in unrealized gains on securities available for sale.

On September 21, 1998, the Board of Directors of S&T approved a two-for-one common stock split which was distributed in the form of a 100% stock dividend.

PAGE 28

The new shares were distributed on October 30, 1998 to shareholders of record on October 15, 1998. The split increased the number of shares outstanding to 27,578,220.

The book values of S&T's common stock increased 2% from $9.20 at December 31, 1997 to $9.38 at December 31, 1998, primarily due to the increase in shareholders' equity from retained earnings, offset by the slight decrease in unrealized holding gains on securities available for sale and by the aforementioned Modified Dutch Auction.

S&T continues to maintain a strong capital position with a leverage ratio of 10.7% as compared to the 1998 minimum regulatory guideline of 3%. S&T's risk-based capital Tier 1 and Total ratios were 14.2% and 17.1%, respectively, at December 31, 1998, which places S&T well above the Federal Reserve Board's risk-based capital guidelines of 4% and 8% for Tier 1 and Total, respectively. Included in the total ratio is 45% of the pretax unrealized holding gains on available for sale equity securities as prescribed by banking regulations effective October 1, 1998. In addition, management believes that S&T has the ability to raise additional capital if necessary. S&T sponsored an ESOP. The ESOP shares were allocated to employees as part of S&T's contributions to its employee thrift and profit sharing plans. At December 31, 1998, the remaining unallocated shares held by the ESOP were allocated to employees as prescribed by the plan.

In April 1993, shareholders approved the S&T Incentive Stock Plan authorizing the issuance of a maximum of 1,200,000 shares of S&T's common stock in order to assist in attracting and retaining employees of outstanding ability and to promote the identification of their interests with those of the shareholders of S&T. On October 17, 1994, the Stock Plan was amended to include outside directors. On April 21, 1997, shareholders approved an amendment to the plan increasing the number of authorized shares to 3,200,000. As of December 31, 1998, 1,869,822 nonstatutory stock options had been granted to key employees and outside directors; 945,772 of these options are currently exercisable.

Year 2000

The Year 2000 Issue is the result of computer programs having been written using two digits rather than four to define the applicable year. Any of S&T's computer programs or hardware that have date-sensitive software or embedded chips may recognize a date using "00" as the year 1900 rather than the year 2000. This could result in a system failure or miscalculations causing disruptions of operations, including, among other things, a temporary inability to process transactions, send invoices or engage in similar normal business activities.

Based on recent assessments, S&T determined that it will be required to modify or replace some portions of hardware and software so that those systems will properly utilize dates beyond December 31, 1999. S&T presently believes that with modifications and replacement of existing hardware and software, the Year 2000 Issue can be mitigated. However, if such modifications and replacements are not made, or are not completed timely, the Year 2000 Issue could have a material impact on the operations of S&T.

S&T's plan to resolve the Year 2000 Issue involves four phases:
assessment, remediation, testing and implementation. In June 1997, S&T management formed a task force (Y2K Task Force) to evaluate the process of preparing its computer systems and applications for the Year 2000. This process involves modifying or replacing certain hardware and software maintained by S&T, as well as communicating with external service providers and customers to ensure that they are taking the appropriate action to remedy their Year 2000 issues. To date, the Y2K Task Force has completed its assessment of the Year 2000 Issue with internal systems and third-party vendors. Assessment of the effect of the Year 2000 Issue on commercial business customers is still being evaluated.

Significant to S&T's data processing abilities are the services provided by M&I Data Services (M&I) and Sungard Trust Services (Sungard) which provide the majority of computer services for S&T customer accounts and transactions. M&I and Sungard are also currently involved in a similar Year 2000 assessment and remediation. S&T converted to both M&I's and Sungard's Year 2000 compliant software systems in the fourth quarter of 1998.

All internal data processing systems are in the process of being tested for Year 2000 compliance. The testing also includes validations of third-party software/hardware vendors that have provided assurance or certifications of compliance. To date, 95% of the testing for critical systems has been completed and software/hardware replacements have been scheduled where problems have been identified. The testing is expected to be completed in the first quarter of 1999; the remediation of critical internal systems was completed by December 31, 1998.

The effect of Year 2000 on the businesses of commercial customers is unknown and is currently being evaluated as part of this risk assessment process. The assessment identified 31 high-risk commercial customers as being significant to S&T's future financial performance. Each of these significant business customers are being called

PAGE 29

upon and interviewed to determine their respective company's awareness and preparedness for the Year 2000 Issue. Results of these interviews are reported to the S&T Senior Loan Committee and credit administration so that remedial action can be taken when appropriate. Communications to all commercial customers via mail and calling officers has been ongoing to ensure effective planning to meet the Year 2000 compliance requirements.

Management and the Y2K Task Force have completed substantially all of the critical systems and application changes by the end of 1998 and believe that its level of preparedness is appropriate. S&T has also developed contingency plans for mission critical systems or applications which are either internal systems or services provided by external sources. These plans involve altern- ative processing plans in the event of system or application failure. S&T expects to finalize these contingency plans during the first quarter of 1999. S&T has estimated the total cost of the project to be $0.3 million and is not expected to materially impact future operations. Purchased hardware and software will be capitalized in accordance with normal policy. Personnel and all other costs related to the project will be expensed as incurred. The Y2K Task Force reports to the S&T Board of Directors each quarter.

Regulatory Matters

S&T and S&T Bank are subject to periodic examinations by one or more of the various regulatory agencies. During 1998, an examination was conducted by the Pennsylvania Department of Banking. This examination included, but was not limited to, procedures designed to review lending practices, credit quality, liquidity, operations and capital adequacy of S&T and its subsidiaries. No comments were received from the Pennsylvania Department of Banking which would have a material effect on S&T's liquidity, capital resources or operations. S&T's current capital position and results of regulatory examination allow it to pay the lowest possible rate for FDIC deposit insurance.

Inflation

Management is aware of the significant effect inflation has on interest rates and can have on financial performance. S&T's ability to cope with this is best determined by analyzing its capability to respond to changing interest rates and its ability to manage noninterest income and expense. S&T monitors its mix of interest rate sensitive assets and liabilities through ALCO in order to reduce the impact of inflation on net interest income. Management also controls the effects of inflation by reviewing the prices of its products and services, by introducing new products and services and by controlling overhead expenses.

Business Uncertainties

Due to the static economy in S&T's mature market area and the potential for decline, management believes that values of loan collateral and the ability of borrowers to repay could be adversely affected in an economic downturn. However, because of S&T's adequate allowance for loan losses, earnings strength and strong capitalization, as well as the strength of other businesses in our market area, management does not expect a decline in S&T's ability to satisfactorily perform if further decline in our economy occurs. In addition, S&T's recent acquisitions provide expanded market opportunities in areas with better growth potential.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995

The statements in this Annual Report, which are not historical fact, are forward looking statements that involve risks and uncertainties, including, but not limited to, the interest rate environment, the effect of federal and state banking and tax regulations, the effect of economic conditions, the impact of competitive products and pricings, and other risks detailed in S&T's Securities and Exchange Commission filings.

PAGE 30

Consolidated Balance Sheets
S&T Bancorp, Inc. and Subsidiaries

December 31                                                 1998                      1997
(dollars in thousands, except per share data)
Assets

Cash and due from banks                                 $    48,736          $    35,951
Interest-earning deposits with banks                                53                      102
Federal funds sold                                         19,300                       -
Securities:
   Available for sale                                565,141                    521,117
   Held to maturity (market value $27,161
      in 1998 and $48,101 in 1997)                                26,345                         47,103
Total Securities                                                   591,486                      568,220

Loans, net of allowance for loan losses
   of $26,677 in 1998 and $20,427 in 1997                       1,339,232                     1,253,326
Premises and equipment                                        20,932                     20,613
Other assets                                                    49,872                  42,079
Total Assets                                                $2,069,611               $1,920,291

Liabilities

Deposits:
   Noninterest-bearing                                          $  215,659            $  165,727
   Interest-bearing                                           1,164,404               1,118,931
Total Deposits                                            1,380,063                   1,284,658

Securities sold under repurchase agreements                     138,825                 170,124
Federal funds purchased                                           -                       9,325
Long-term borrowings                                           240,068                  144,218
Other liabilities                                                  51,018                        51,848
Total Liabilities                                               1,809,974                     1,660,173

Shareholders' Equity

Preferred stock, without par value, 10,000,000
   shares authorized and none outstanding                               -                             -
Common stock ($2.50 par value)
   Authorized-50,000,000 shares in 1998 and
    25,000,000 in 1997
   Issued-29,714,038 shares in 1998 and
    14,857,019 in 1997                                       74,285                      37,142
Additional paid-in capital                                        21,234                        19,369
Retained earnings                                                 158,274                       175,707
Accumulated other comprehensive income                        39,961                    40,524
Treasury stock (2,038,459 shares in 1998
   and 1,431,728 shares in 1997, at cost)                         (34,117)              (12,494)
Deferred compensation                                               -                      (130)
Total Shareholders' Equity                                       259,637                        260,118
Total Liabilities and Shareholders' Equity                    $2,069,611                     $1,920,291

See Notes to Consolidated Financial Statements

PAGE 31

Consolidated Statements of Income
S&T Bancorp, Inc. and Subsidiaries

Year Ended December 31                           1998           1997           1996
(dollars in thousands, except per share data)

Interest Income
Loans, including fees                          $115,081     $108,891       $ 99,493
Deposits with banks                                     6                  8              5
Federal funds sold                                     308              523             330
Investment securities:
   Taxable                                          29,984            25,421            26,349
   Tax-exempt                                     1,557        2,250          2,834
   Dividends                                       4,502               4,008          3,431
Total Interest Income                           151,438      141,101        132,442

Interest Expense

Deposits                                              49,570          47,966         46,125
Securities sold under repurchase agreements         8,968             6,602          7,006
Federal funds purchased                           383           472             319
Long-term borrowings                              10,226               7,227          5,071
Other borrowed funds                                   9                17               68
Total Interest Expense                          69,156          62,284       58,589

Net Interest Income                                82,282             78,817         73,853
Provision for Loan Losses                            10,550            5,000            5,175
Net Interest Income After Provision
   for Loan Losses                                  71,732            73,817         68,678

Noninterest Income

Service charges on deposit accounts                 5,548              4,603          4,039
Trust fees                                           3,661             3,181          2,839
Security gains, net                                10,722              5,446          2,227
Other                                             4,487        3,211          2,892
Total Noninterest Income                              24,418            16,441       11,997

Noninterest Expense

Salaries and employee benefits                  22,086        22,816         21,763
Occupancy, net                                   2,759         2,583          2,886
Furniture and equipment                         2,688          3,170          2,447
Other taxes                                         1,456              1,320         1,201
Data processing                                 2,411          2,154         1,955
Amortization of intangibles                           112                  -            314
FDIC assessment                                         228              240         1,199
Other                                            10,248       10,915            10,633
Total Noninterest Expense                            41,988           43,198         42,398
Income Before Income Taxes                          54,162            47,060         38,277
Applicable Income Taxes                        16,199         13,646            10,036
Net Income                                        $ 37,963      $ 33,414          $  28,241

Per Common Share:1

   Net Income-Basic                            $    1.37            $    1.18   $     1.00
   Net Income-Diluted                           1.35             1.17           1.00
   Dividends Declared                             0.66           0.56          0.47

1 Per share amounts have been restated to record the effect of a two-for-one common stock split in the form of a 100% stock dividend distributed on October 30, 1998.

See Notes to Consolidated Financial Statements.

PAGE 32

Consolidated Statements of Changes in Shareholders' Equity S&T Bancorp, Inc. and Subsidiaries

                                                                                                Accumulated
                                                                                    Other
                                                                      Additional                       Compre-
                                Comprehensive    Common   Paid-In       Retained         nsive  Treasury        Deferred
                                          Income          Stock   Capital       Earnings Income   Stock   Compensation
(dollars in thousands, except per share data)
Balance at January 1, 1996              $      -        $37,142 $18,120 $141,576        $24,738  $(7,182)       $(340)

Comprehensive Income:
Net income for 1996                      28,241                                 28,241
Other comprehensive income,
   net of tax Unrealized gains
   on securities of $1,823 net
   of reclassification adjustment
   for gains included in net
   income of $1,364                     459                                                     459
Cash dividends declared
   ($0.47 per share)1                                                              (11,835)
Treasury stock acquired
   (257,525 shares)                                                                                                   (7,287)
Treasury stock sold
   (89,614 shares)                                                      924                                        1,452
Deferred ESOP benefits expense                                                                                                     110
Comprehensive Income                    28,700
Balance at December 31, 1996                          $37,142   $19,044 $157,982 $25,197 $(13,017)$(230)

Comprehensive Income:
Net income for 1997                      33,414                                 33,414
Other comprehensive income,
   net of tax Unrealized
   gains on securities of
   $23,712 net of reclassification
   adjustment for gains included in
   net income of $8,385              15,327                                                   15,327
Cash dividends declared
   ($0.56 per share)1                                                   (15,689)
Treasury stock acquired
   (138 shares)                                                                                                       (5)
Treasury stock sold
   (30,277 shares)                                                        325                                         528
Deferred ESOP benefits expense                                                                                                     100
Comprehensive Income                      48,741
Balance at December 31, 1997                         $37,142    $19,369 $175,707        $40,524 $(12,494)$(130)

Comprehensive Income:
Net income for 1998                     37,963                           37,963
Other comprehensive income,
   net of tax Unrealized
   gains on securities of
   $6,718 net of reclassification
   adjustment for gains included in
   net income of $7,281               (563)                                              (563)
Cash dividends declared
   ($0.66 per share)1                                                              (18,253)
Treasury stock acquired
   (1,117,036 shares)                                                                 (27,975)
Treasury stock sold
   (510,305 shares)                                                     (802)                    6,352
Tax Deductibility/Options                                                2,667
Deferred ESOP benefits expense                                                                                                       130
Transfer to reflect two-for-one
    stock split                                    37,143              (37,143)
Comprehensive Income                  $37,400
Balance at December 31, 1998                             $74,285        $21,234 $158,274        $39,961 $(34,117)       $    -

1 Per share amounts have been restated to record the effect of a
two-for-one common stock split in the form of a 100% stock
dividend distributed on October 30, 1998.

See Notes to Consolidated Financial Statements.

PAGE 33

Consolidated Statements of Cash Flows
S&T Bancorp, Inc. and Subsidiaries
[CAPTION]

Year Ended December 31                                     1998    1997    1996
(dollars in thousands)
Operating Activities

Net Income                                              $37,963         $33,414   $28,241
Adjustments to reconcile net income to net cash
   provided by operating activities:
      Provision for loan losses                     10,550       5,000      5,175
      Provision for depreciation and amortization    2,158     2,163     2,445
      Net amortization of investment security premiums  609       675         543
      Net accretion of loan and deposit discounts              -         -        (343)
      Deferred income taxes                               (821)          (756)           (613)
      Securities gains, net                            (10,722)   (5,446)   (2,227)
      Decrease (increase) in interest receivable              157        (1,601)        449
     (Decrease) increase in interest payable             (139)             395             (271)
      Decrease (increase) in other assets                    790            819            (458)
     (Decrease) increase in other liabilities         (2,214)      531            3,170
Net Cash Provided by Operating Activities                 38,331        35,194          36,111

Investing Activities

Net decrease (increase) in interest-earning
   deposits with banks                                   49           7       (58)
Net (increase) decrease in federal funds sold        (19,300)    6,465        875
Proceeds from maturities of investment securities   20,772          3,146          11,361
Proceeds from maturities of securities available
  for sale                                             192,105          127,344           90,214
Proceeds from sales of securities available for
  sale                                               96,233      77,826    40,855
Purchases of investment securities                            -             -    (4,231)
Purchases of securities available for sale             (323,130)        (248,077)       (148,259)
Net increase in loans                                (96,456)    (76,919)       (99,741)
Purchases of premises and equipment                     (1,933)   (2,042)         (3,020)
Other, net                                                  215      (696)           303
Net cash acquired in branch acquisition             31,604              -               -
Net Cash Used in Investing Activities                (99,841)   (112,946)       (111,701)

Financing Activities

Net increase in demand, NOW and savings deposits           81,553           9,105          23,761
Net (decrease) increase in certificates of deposit      (25,213)           5,186           30,060
Net (decrease) increase in federal funds purchased       (9,325)           8,550              450
Net (decrease) increase in repurchase agreements          (31,299)        55,919          (8,589)
Decrease in obligation under capital lease                    -         -            (294)
Proceeds from FHLB long-term borrowings            120,850         68,600          55,000
Repayments from FHLB long-term borrowings                (25,000)        (61,000)       (14,987)
Acquisition of treasury stock                        (27,975)         (5)         (7,287)
Sale of treasury stock                                8,219           853           2,376
Cash dividends paid to shareholders                    (17,515)  (14,215)       (10,667)
Net Cash Provided by Financing Activities                 74,295           72,993          69,823

Increase (decrease) in Cash and Cash Equivalents           12,785          (4,759)      (5,767)
Cash and Cash Equivalents at Beginning of Year       35,951        40,710         46,477
Cash and Cash Equivalents at End of Year                $  48,736       $  35,951       $  40,710

See Notes to Consolidated Financial Statements.

PAGE 34

Notes to Consolidated Financial Statements
S&T Bancorp, Inc. and Subsidiaries

Note A

Accounting Policies

The financial statements of S&T Bancorp, Inc. and
subsidiaries (S&T) have been prepared in accordance with
generally accepted accounting principles. In preparing the
financial statements, management is required to make estimates
and assumptions that affect the reported amounts of assets and
liabilities as of the date of the balance sheet and revenues and
expenses for the period. Actual results could differ from those
estimates. The more significant accounting policies are described
below.

Principles of Consolidation

The consolidated financial statements include the accounts of S&T
and its subsidiaries. All significant intercompany transactions
have been eliminated in consolidation. The investment in the
subsidiaries is carried at S&T's equity in the underlying net
assets. The 1996 financial information has been restated to
reflect the merger of Peoples Bank of Unity on May 2, 1997.

Securities

Management determines the appropriate classification of
securities at the time of purchase. If management has the
positive intent and S&T has the ability at the time of purchase
to hold securities until maturity, they are classified as held to
maturity and are stated at cost adjusted for amortization of
premiums and accretion of discounts. All obligations of states
and political subdivisions and corporate securities are
classified in this category. Securities to be held for indefinite
periods of time are classified as available for sale and are
recorded at market value. All U.S. treasury securities, U.S.
government corporations and agencies, mortgage-backed securities,
and marketable equity securities are classified in this category.
Gains or losses on the disposition of securities are based on the
specific identification method. S&T does not engage in any
securities trading activity.

Loans

Interest on loans is accrued and credited to operations based on
the principal amount outstanding. Accretion of discount on loans
is included in interest income. Loan origination fees and direct
loan origination costs are deferred and amortized as an
adjustment of loan yield over the respective lives of the loans.
Loans are placed on nonaccrual and interest is discontinued when
collection of interest or principal is doubtful, or generally
when interest or principal are 90 days or more past due.

   Impaired loans are defined by management as commercial and
commercial real estate loans for which it is probable that the
Bank will not be able to collect all amounts due according to the
contractual terms of the loan agreement. Residential real estate
mortgages and consumer installment loans are large groups of
smaller balance homogeneous loans and are separately measured for
impairment collectability. Factors considered by management in
determining impairment include payment status and underlying
collateral value. All impaired loans are classified as
substandard for risk classification purposes. Impaired loans are
charged-off, to the estimated value of collateral associated with
the loan, when management believes principal and interest are
deemed uncollectible. The accrual of interest on impaired loans
is discontinued when, in management's opinion, the borrower may
be unable to meet the payments as they become due. When interest
accrual is discontinued, all unpaid accrued interest is reversed.
Interest income is subsequently recognized only to the extent
that cash payments are received.

   The allowance for loan losses is established through provisions
for loan losses charged against income. Loans considered to be
uncollectible are charged against the allowance, and recoveries,
if any, are credited to the allowance. The allowance for loan
losses is maintained at a level believed adequate by management
to absorb probable losses in the loan portfolio. Management's
determination of the adequacy of the allowance is based on
periodic evaluations of the loan portfolio, past loan loss
experience, current economic conditions, volume, growth and
composition of the loan portfolio and other relevant factors.

Premises and Equipment

Premises and equipment are stated at cost less accumulated
depreciation. The provision for depreciation is computed
generally by the straight-line method for financial reporting
purposes and by accelerated methods for federal income tax
purposes.

Other Real Estate

Other real estate is included in other assets and is comprised of
properties acquired through foreclosure proceedings or acceptance
of a deed in lieu of foreclosure and loans classified as in-
substance foreclosure. These properties are carried at the lower
of cost or fair value less cost of resale. Loan losses arising
from the acquisition of such property are charged against the
allowance for loan losses. Gains or losses realized subsequent to
acquisition are recorded in the results of operations.

PAGE 35

Income Taxes

Deferred tax assets and liabilities are reflected at currently
enacted income tax rates applicable to the period in which the
deferred tax assets or liabilities are expected to be realized or
settled.

Trust Assets and Income

Assets held in a fiduciary capacity by the Bank are not assets of
the Bank and are therefore not included in the consolidated
financial statements. Trust fee income is reported on the accrual
basis.

Pensions

Pension expense for the Bank's defined benefit pension plan is
actuarially determined using the projected unit credit actuarial
cost method. The funding policy for the plan is to contribute
amounts to the plan sufficient to meet the minimum funding
requirements of the Employee Retirement Income Security Act of
1974, plus such additional amounts as may be appropriate, subject
to federal income tax limitations.

Treasury Stock

The purchase of S&T common stock is recorded at cost. At the time
of reissue, the treasury stock account is reduced using the
average cost method.

Earnings Per Share

Financial Accounting Standards Board Statement No. 128, "Earnings
Per Share" (Statement No. 128), was effective in 1997 and
provides a simpler calculation called basic Earnings Per Share
(EPS) which replaces primary EPS under APB Opinion 15. Basic EPS
is calculated by dividing income available to common shareholders
by the weighted average number of common shares outstanding
during the period. Options, warrants and other potentially
dilutive securities are excluded from the basic calculation, but
are included in diluted EPS. All prior periods have been restated
and recorded in accordance with Statement No. 128.
   Average shares outstanding for computing basic EPS were
27,762,801, 28,263,036 and 28,217,234 for 1998, 1997 and 1996,
respectively. Average shares outstanding for computing dilutive
EPS were 28,055,142, 28,618,364 and 28,440,844 for 1998, 1997 and
1996, respectively. In computing dilutive EPS, average shares
outstanding have been increased by the common stock equivalents
relating to S&T's available stock options.

Per Share Amounts

Prior years net income and dividends per share amounts have been
restated to reflect the two-for-one common stock split in the
form of a 100% stock dividend distributed on October 30, 1998.

Cash Flow Information

S&T considers cash and due from banks as cash and cash
equivalents. For the years ended December 31, 1998, 1997 and
1996, cash paid for interest was $69,295,000, $60,825,000 and
$58,860,000, respectively. Cash paid during 1998 for income taxes
was $15,567,000 compared to $14,190,000 for 1997 and $11,014,000
for 1996.

Comprehensive Income

Financial Accounting Standards Board Statement No. 130,
"Accounting for Comprehensive Income" (Statement No. 130), was
adopted by S&T in 1998. Statement No. 130 establishes new rules
for the reporting and display of comprehensive income and its
components. The adoption of this Statement had no impact on S&T's
net income or shareholders' equity. Statement No. 130 requires
unrealized gains or losses on S&T's available for sale
securities, which prior to adoption were reported separately in
shareholders' equity, to be included in comprehensive income.
Prior period financial statements have been reclassified to
conform to the requirements of Statement No. 130. During the
years ending December 31, 1998, 1997 and 1996, comprehensive
income amounted to $37,400,000, $48,741,000 and $28,700,000,
respectively.

Mortgage Loan Servicing

Mortgage servicing assets are recognized as separate assets when
servicing rights are acquired through purchase or loan
originations, when there is a definitive plan to sell the
underlying loan. Capitalized mortgage servicing rights are
reported in other assets and are amortized into noninterest
income in proportion to, and over the period of, the estimated
future net servicing income of the underlying mortgage loans.
Capitalized mortgage servicing rights are evaluated for
impairment based on the fair value of those rights. In 1998 and
1997, $10.9 million and $12.7 million, respectively, of 1-4
family mortgage loans were sold to the Federal National Mortgage
Association (FNMA), and $302,000 and $187,000, respectively, of
mortgage servicing rights were capitalized and recorded in other
assets.

PAGE 36

Reclassification

Amounts in prior years have been reclassed to conform to
presentation in 1998. The reclassification had no effect on S&T's
financial condition or results of operations.

New Accounting Pronouncements

Financial Accounting Standards Board Statement No. 131,
"Disclosures about Segments of an Enterprise and Related
Information" (Statement No. 131), is effective in 1998 and
requires public companies to disclose certain information about
reportable operating segments in complete sets of financial
statements of the enterprise. Statement No. 131 does not
materially affect S&T's financial position or results of
operations as S&T management views the bank as one segment of
business which is community banking.

   Financial Accounting Standards Board Statement No. 132,
"Employers' Disclosures about Pensions and Other Postretirement
Benefits" (Statement No. 132), is effective in 1998 and
standardizes the disclosure requirements for pensions and other
postretirement benefits. Statement No. 132 had no impact on S&T's
financial position or results of operations.
Financial Accounting Standards Board Statement No. 133,
"Accounting for Derivative Instruments and Hedging Activities"
(Statement No. 133), is effective in 1999 and requires measuring
and recording the change in fair value of hedging activities. S&T
is currently in the process of evaluating the impact of Statement
No. 133. Statement No. 133 is not expected to materially affect
S&T's financial position or results of operations.

Note B
Fair Values of Financial Instruments

S&T utilized quoted market values, where available, to assign
fair value to its financial instruments. In cases where quoted
market values were not available, S&T used present value methods
to estimate the fair value of its financial instruments. These
estimates of fair value are significantly affected by the
assumptions made and, accordingly, do not necessarily indicate
amounts which could be realized in a current market exchange. S&T
does not expect to realize the estimated amounts disclosed.

   The following methods and assumptions were used by S&T in
estimating its fair value disclosures for financial instruments:

Cash and Cash Equivalents and
Other Short-Term Assets

The carrying amounts reported in the consolidated balance sheet
for cash and due from banks, interest-earning deposits with banks
and federal funds sold approximate those assets' fair values.

Securities

Fair values for investment securities and securities available
for sale are based on quoted market prices.

Loans

For variable-rate loans that reprice frequently and with no
significant change in credit risk, fair values are based on
carrying values. The fair values for other loans are estimated
using discounted cash flow analyses, using interest rates
currently being offered for loans with similar terms to borrowers
as measured by net credit losses and the loss of interest income
from nonaccrual loans. The carrying amount of accrued interest
approximates its fair value.

Deposits

The fair values disclosed for demand deposits (e.g., noninterest
and interest-bearing demand, money market and savings accounts)
are, by definition, equal to the amount payable on demand. The
carrying amounts for variable-rate, fixed-term certificates of
deposit and other time deposits approximate their fair value at
year-end. Fair values for fixed-rate certificates of deposit and
other time deposits are based on the discounted value of
contractual cash flows, using interest rates currently being
offered for deposits of similar remaining maturities.

Short-Term Borrowings and
Other Borrowed Funds

The carrying amounts of federal funds purchased, borrowings under
repurchase agreements and other borrowings approximate their fair
values.

Long-Term Borrowings

The fair values disclosed for long-term borrowings are estimated
using current interest rates for long-term borrowings of similar
remaining maturities.

Loan Commitments and
Standby Letters of Credit

Estimates of the fair value of these off-balance sheet items were
not made because of the short term of these arrangements and the
credit standing of the counterparties. Also, unfunded loan
commitments relate principally to variable rate commercial loans,
and fees are not normally assessed on these balances.

PAGE 37

   Estimates of fair value have not been made for items which are
not defined as financial instruments, including such items as
S&T's core deposit intangibles and the value of its trust
operation. S&T believes it is impracticable to estimate a
representational fair value for these types of assets, which
represent significant value to S&T.

   The following table indicates the estimated fair value of S&T's
financial instruments as of December 31:
                                                 1998                      1997
                                                Estimated        Carrying          Estimated      Carrying
                                                Fair Value         Value           Fair Value      Value
(dollars in thousands)
Assets

   Cash                                  $   48,789     $   48,789      $   36,053      $   36,053
   Federal funds sold                          19,300        19,300              -               -
   Securities:
      Available for sale                           565,141          565,141        521,117         521,117
      Held to maturity                        27,161            26,345          48,101          47,103
   Loans                                         1,382,029      1,365,909       1,279,802       1,273,753

Liabilities

   Deposits                             $1,388,634      $1,380,063      $1,287,497      $1,284,658
   Securities sold under
      repurchase agreements                     138,825         138,825         170,126         170,124
   Federal funds purchased                             -                  -             9,325           9,325
   Long-term borrowings                 246,397     240,068     145,049         144,218
   Other borrowed funds                           -               -            130             130

Off-Balance Sheet
   Interest rate swaps                    $      (33)   $        - $      192   $       -

Note C
Derivative Financial Instruments

S&T does not extensively use derivative financial instruments. The only type of instrument that S&T utilizes is interest rate swaps.

S&T has one interest rate swap at a notional value totaling $10.0 million, paying a fixed-rate and receiving a variable-rate. The purpose of this transaction was to provide matched, fixed-rate funding for newly originated loans, and to mitigate the risk associated with volatile liability funding. The effective rate of the swap was 5.37% at December 31, 1998. Interest rate swaps are not reported in the consolidated balance sheets. Differences between interest received and interest paid are reported as a component of borrowing expense in the consolidated income statement.

Note D
Restrictions on Cash and Due from Bank Accounts

The Board of Governors of the Federal Reserve Bank impose certain reserve requirements on all depository institutions. These reserves are maintained in the form of vault cash or as a noninterest-bearing balance with the Federal Reserve Bank. Required reserves averaged $16,988,000 during 1998.

PAGE 38

Note E
Securities

The following table indicates the composition of the securities portfolio at December 31:

                                                                 Available for Sale
                                                                        Gross      Gross
                                                      Amortized Unrealized      Unrealized      Market
1998                                                  Cost          Gains          Losses          Value
(dollars in thousands)
Obligations of U.S. government
   corporations and agencies                      $353,393      $  4,035          $ (11)          $357,417
Mortgage-backed securities                            8,410          305                         8,715
U.S. treasury securities                                26,374     1,578                        27,952
Corporate securities                                35,902           454           (3)      36,353
Debt securities available for sale                   424,079       6,372          (14)     430,437
Marketable equity securities                        60,411        55,597           (476)           115,532
Other securities                                        19,172                                          19,172
Total                                            $503,662        $61,969          $(490)   $565,141

                                                            Held to Maturity
Obligations of states and political
  subdivisions                                 $  21,009         $    647                        $  21,656
Corporate securities                                 1,999            169                            2,168
Debt securities held to maturity                        23,008        816                           23,824
Other securities                                         3,337                                        3,337
Total                                           $  26,345        $    816        $    -   $  27,161

                                                                 Available for Sale
                                                                       Gross         Gross
                                                      Amortized Unrealized      Unrealized      Market
1997                                              Cost       Gains           Losses         Value
(dollars in thousands)
Obligations of U.S. government
   corporations and agencies                     $338,855        $ 2,616        $(183)     $ 341,288
Mortgage-backed securities                          14,169           373                             14,542
U.S. treasury securities                               38,044      1,429                              39,473
Corporate securities                               10,848            228            (12)              11,064
Debt securities available for sale                  401,916        4,646           (195)             406,367
Marketable equity securities                       43,745       58,060          (166)        101,639
Other securities                                       13,111                                         13,111
Total                                           $458,772         $62,706          $(361)            $521,117

                                                        Held to Maturity
Obligations of states and political
   subdivisions                               $ 37,497   $   794          $  (5)           $ 38,286
Corporate securities                                1,998            209                               2,207
Debt securities held to maturity                       39,495           1,003            (5)          40,493
Other securities                                        7,608                                          7,608
Total                                           $ 47,103         $ 1,003         $  (5)         $ 48,101

PAGE 39

There were $11,881,000, $6,031,000 and $2,528,000 in gross realized gains and $1,159,000, $585,000 and $305,000 in gross realized losses in 1998, 1997 and 1996, respectively, relative to securities available for sale.

The amortized cost and estimated market value of debt securities at December 31, 1998, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

For purposes of the maturity table, mortgage-backed securities, which are not due at a single maturity date, have been allocated over maturity groupings based on the weighted-average contractual maturities of the underlying collateral. The mortgage-backed securities may mature earlier than their weighted-average contractual maturities because of principal prepayments.

                                                        Amortized                Market
Available for Sale                                          Cost                      Value
(dollars in thousands)
Due in one year or less                                $  23,367          $  23,691
Due after one year through five years                      274,025      277,451
Due after five years through 10 years                      122,907          125,406
Due after 10 years                                              3,780        3,889
Total                                                    $ 424,079      $ 430,437

                                                Amortized                Market
Held to Maturity                                              Cost                    Value

Due in one year or less                                $   4,934        $   4,961
Due after one year through five years                       14,435           15,066
Due after five years through 10 years                        3,639            3,797
Due after 10 years                                                  -             -
Total                                                    $  23,008      $  23,824

At December 31, 1998 and 1997, securities with principal amounts of $295,286,000 and $274,350,000, respectively, were pledged to secure repurchase agreements and public and trust fund deposits.

Note F
Loans

The following table indicates the composition of the loan portfolio at December 31:
[CAPTION]

                                                                    1998                1997
(dollars in thousands)
Real estate-construction                                $   87,246        $   47,967
Real estate-mortgages:
   Residential                                                492,570        512,417
   Commercial                                                  407,445       327,384
Commercial-industrial and agricultural                        265,297        255,017
Consumer installment                                            113,351         130,968
Gross Loans                                                  $1,365,909   $1,273,753
Allowance for loan losses                                          (26,677)         (20,427)
Net Loans                                                       $1,339,232        $1,253,326

PAGE 40

[CAPTION]

   The following table presents changes in the allowance
for loan losses for the year ended December 31:

                                        1998            1997          1996
(dollars in thousands)
Balance at beginning of year             $ 20,427         $ 18,729         $ 17,065
Charge-offs                                 (5,999)        (4,481)     (5,536)
Recoveries                                    1,699          1,179         2,025
Net charge-offs                         (4,300)            (3,302)     (3,511)
Provision for loan losses                     10,550         5,000         5,175
Balance at end of year                 $ 26,677           $ 20,427         $ 18,729

The Bank has granted loans to certain officers and directors of S&T as well as certain affiliates of the officers and directors in the ordinary course of business. These loans were made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons and did not involve more than normal risk of collectibility. The aggregate dollar amounts of these loans were $40,862,000 and $41,130,000 at December 31, 1998 and 1997, respectively. During 1998, $56,514,000 of new loans were funded and repayments totaled $56,782,000.

During 1998, S&T Bank acquired automobile loans and leases on a third-party basis from companies owned by two directors of S&T totaling $1,982,000. These loans were acquired on substantially the same terms as those prevailing at the time for comparable transactions with others.

The principal balances of loans on nonaccrual were $2,933,000 and $3,602,000 at December 31, 1998 and December 31, 1997, respectively. At December 31, 1998, there were no commitments to lend additional funds on nonaccrual loans. Other real estate owned, which is included in other assets, was $721,000 at December 31, 1998 and $647,000 at December 31, 1997.

The following table represents S&T's investment in loans considered to be impaired and related information on those impaired loans at December 31:

[CAPTION]

                                                                          1998        1997
(dollars in thousands)
Recorded investment in loans considered to be impaired          $3,391,000      $1,869,000
Loans considered to be impaired that were on a
   nonaccrual basis                                                          -           -
Allowance for loan losses related to loans considered
   to be impaired                                                        133,000           914,000
Average recorded investment in impaired loans                      2,927,000     6,329,000
Total interest income recognized on impaired loans                      674,000    656,000
Interest income on impaired loans recognized on a
   cash basis                                                        605,000             -

PAGE 41

Note G
Premises and Equipment
[CAPTION]

The following table is a summary of the premises and
equipment accounts at December 31:

                                                               1998             1997
(dollars in thousands)
Land                                                 $   3,026     $   3,037
Premises                                                     18,619           18,498
Furniture and equipment                              13,568           12,152
Leasehold improvements                                  2,973          2,483
                                                             38,186           36,170
Accumulated depreciation                                    (17,254)            (15,557)
Total                                                $  20,932          $  20,613

Certain banking facilities and equipment are leased under short-term lease arrangements expiring at various dates to the year 2008. All such leases are accounted for as operating leases. Rental expense for premises and equipment amounted to $1,497,000, $1,215,000 and $1,136,000 in 1998, 1997 and 1996, respectively. Minimum annual rentals for each of the years 1999-2003 are approximately $532,000, $519,000, $389,000, $168,000 and $169,000, respectively, and $620,000 for the years thereafter. Included in the above are leases entered into with two directors of S&T for which rental expense totaled $338,921, $348,497 and $325,709 in 1998, 1997 and 1996, respectively.

Note H
Deposits

[CAPTION]

The following table indicates the composition of deposits
at December 31:
                                                            1998                 1997
(dollars in thousands)
Noninterest-bearing demand                             $  215,659         $  165,727
Interest-bearing demand                               37,540           33,582
Money market                                            325,196       274,874
Savings                                                     168,485          175,187
Time deposits                                          633,183        635,288
Total                                               $1,380,063     $1,284,658

The aggregate of all time deposits over $100,000 amounted to $91,173,000 and $95,678,000 for December 31, 1998 and 1997, respectively.

PAGE 42

The following table indicates the scheduled maturities of time deposits at December 31:

[CAPTION]

                                                        1998               1997
(dollars in thousands)
Due in one year                                      $386,960         $306,278
Due in one to two years                               143,355           187,257
Due in two to three years                                    34,499              83,395
Due in three to four years                              26,005           16,434
Due in four to five years                                   26,430               26,751
Due after five years                                      15,934                15,173
Total                                                $633,183          $635,288

Note I
Long-Term Borrowings

[CAPTION]

The following table is a summary of long-term borrowings with the
Federal Home Loan Bank (FHLB):
                                              1998                         1997
                                       Balance           Average     Balance        Average
                                            Rate                    Rate
(dollars in thousands)
Due in one year                 $      -                 -%              $ 25,000            5.97%
Due in one to two years                  12,500              5.07                        -               -
Due in two to three years               30,000       6.02                   12,500            5.70
Due in three to four years             68,100         5.18                  30,000            6.02
Due in four to five years               25,000        5.18                  57,100            5.25
Due after five years                 44,618           5.61               19,618       6.48
Total                             $180,218            5.42%              $144,218            5.74%

The purpose of these borrowings was to match fund selected new loan originations, to mitigate interest rate sensitivity risks and to take advantage of discounted borrowing rates through the FHLB for community investment projects.

S&T maintains a Flexline of credit for 10% of total assets with the FHLB which expires December 31, 1999. S&T pledged all 1-4 family and multi-family mortgage loans as collateral for any current or future FHLB advances. The total carrying amount of these pledged loans was $423,761,000 at December 31, 1998, which is the maximum amount to be borrowed under the Flexline. There were no Flexline borrowings outstanding at December 31, 1998 and 1997, respectively.

During 1998, S&T acquired two repurchase agreement long-term borrowings totaling $59,850,000 at a weighted average fixed rate of 6.20% which matures in five years. The purpose of this borrowing was to lock in fixed rate fundings to mitigate interest rate risk.

Note J
Short-Term Debt

Federal funds purchased and securities sold under repurchase agreements (REPOS) generally mature within one to 14 days from the transaction date. S&T defines REPOS with its retail customers as retail REPOS, and wholesale REPOS are those transacted with other financial institutions and brokerage firms.

PAGE 43

[CAPTION]

Information concerning federal funds purchased and
REPOS is summarized as follows:
                                                        1998                1997
(dollars in thousands)
Average balance during the year                      $177,968            $134,851
Average interest rate during the year                     5.29%             5.31%
Maximum month-end balance during the year                  $251,030             $195,024
Average interest rate at year-end                             4.63%                 5.82%

Note K
Dividend and Loan Restrictions

Certain restrictions exist regarding the ability of S&T Bank to transfer funds to S&T in the form of dividends and loans. Dividends that may be paid by S&T Bank to S&T are limited to the retained earnings of S&T Bank which amounted to $100,142,000 at December 31, 1998. The amount of dividends that may be paid to S&T is further restricted by regulatory guidelines concerning minimum capital requirements.

Federal law prohibits S&T from borrowing from S&T Bank unless such loans are collateralized by specific obligations. Further, such loans are limited to 10% of S&T Bank's capital and additional paid-in capital, as defined. At December 31, 1998, the maximum amount available for transfer from S&T Bank to S&T in the form of loans and dividends approximated 40% of consolidated net assets.

Note L
Litigation

S&T, in the normal course of business, is subject to various legal proceedings in which claims for monetary damages are asserted. No material losses are anticipated by management as a result of these legal proceedings.

Note M
Financial Instruments and Credit Risk

S&T, in the normal course of business, commits to extend credit and issue standby letters of credit. The obligations are not recorded in S&T's financial statements. Loan commitments and standby letters of credit are subject to S&T's normal credit underwriting policies and procedures and generally require collateral based upon management's evaluation of each customer's financial condition and ability to satisfy completely the terms of the agreement. S&T's exposure to credit loss in the event the customer does not satisfy the terms of the agreement equals the notional amount of the obligation less the value of any collateral. Unfunded loan commitments totaled $372,450,000 and $294,144,000 at December 31, 1998 and 1997, respectively; and obligations under standby letters of credit totaled $78,490,000 and $54,439,000 at December 31, 1998 and 1997, respectively.

PAGE 44

S&T attempts to limit its exposure to concentrations of credit risk by diversifying its loan portfolio. S&T defines concentrations of credit risk as loans to a specific industry or group in excess of 10% of total loans. S&T has no concentration of credit risk by industry or group. However, geographic concentrations exist because S&T provides a full range of banking services including commercial, consumer and mortgage loans to individuals and corporate customers in its seven-county market area in western Pennsylvania.

Note N
Income Taxes

[CAPTION]

Income tax expense (credits) for the year ended December 31 are
comprised of:
                                         1998         1997            1996
(dollars in thousands)
Current                          $18,831           $14,402         $10,649
Deferred                                 (2,632)             (756)           (613)
Total                              $16,199         $13,646         $10,036

The provision for income taxes differs from the amount computed by applying the statutory federal income tax rate to income before income taxes. The statutory to effective tax rate reconciliation for the year ended December 31 is as follows:

[CAPTION]

                                           1998       1997            1996
(dollars in thousands)
Statutory tax rate                        35%          35%            35%
Tax-exempt interest income
   and dividend exclusion                 (3)          (4)             (6)
Low income housing tax credits        (2)              (2)             (3)
Effective tax rate                        30%          29%             26%

Income taxes applicable to security gains were $3,753,000 in 1998, $1,906,000 in 1997 and $779,000 in 1996.

PAGE 45

Significant components of S&T's temporary differences were as follows at December 31:

[CAPTION]

                                                                    1998                 1997
(dollars in thousands)
Deferred tax liabilities:
   Net unrealized holding gains
      on securities available for sale                     $(21,518)        $(21,821)
   Fixed assets                                                (644)            (683)
   Accretion on acquired loans                                  (559)           (326)
   Prepaid pension                                                  (166)               (514)
   Prepaid hospitalization                                      (102)           (102)
   Point recognition                                              (830)         (933)
Total deferred tax liabilities                               (23,819)        (24,379)

Deferred tax assets:
   Allowance on loan losses                                       9,127         6,939
   Loan fees                                                       558            377
   Interest expense on increasing rate CDs                           114                  128
   Deferred compensation                                              799                 771
   Goodwill                                                         312           352
   Other                                                               206                174
Total deferred tax assets                                          11,116               8,741
Net deferred tax liability                                      $(12,703)           $(15,638)

Note O
Employee Benefits

The Bank maintains a defined benefit pension plan covering substantially all employees. The benefits are based on years of service and the employee's compensation during the last ten years of employment. Contributions are intended to provide for benefits attributed to employee service to date and for those benefits expected to be earned in the future. Trustee pension plan assets consist primarily of equity and fixed income securities and short-term investments.

The following table summarizes the components of net periodic pension expense for the Bank's defined benefit plan:

[CAPTION]

                                                         1998        1997             1996
(dollars in thousands)
Service cost-benefits earned during the period  $ 1,068          $ 1,103         $ 1,032
Interest cost on projected benefit obligation       1,489           1,378           1,274
Expected return on plan assets                    (2,070)         (1,774)         (1,546)
Net amortization and deferral                         (14)           (16)             (8)
Net periodic pension expense                       $   473        $   691        $   752

PAGE 46

The following tables summarize the activitiy in the benefit obligation and plan assets.
[CAPTION]

                                                                1998            1997
(dollars in thousands)
Change in Benefit Obligation

Benefit obligation at beginning of year                     $ 23,385         $ 19,593
Service cost                                                      1,068         1,103
Interest cost                                                    1,489          1,378
Plan participants' contributions                                        166               220
Special termination benefits                                          -           463
Actuarial (gain)/loss                                              101          1,464
Benefits paid                                                   (1,038)         (836)
Benefit obligation at end of year                                 $ 25,171           $ 23,385

Change in Plan Assets

Fair value of plan assets at beginning of year               $ 26,043        $ 22,189
Actual return on plan assets                                      2,992         3,767
Employer contributions                                            734             703
Plan participants' contributions                                        166               220
Benefits paid                                                   (1,038)         (836)
Fair value of plan assets at end of year                           $ 28,897          $ 26,043

The following table sets forth the plan's funded status and the accrued pension cost in the consolidated balance sheet at December 31:
[CAPTION]

                                                                     1998               1997
(dollars in thousands)
Benefit obligation at beginning of year                    $(25,171)        $(23,385)
Fair value of plan assets at end of year                            28,897             26,043
Funded status                                                   3,726           2,658
Unrecognized net gain                                          (3,216)        (2,475)
Unamortized prior service cost                                    77              104
Balance of initial unrecognized net asset                       (51)             (72)
Accrued pension cost included in other liabilities              $    536            $    215

[CAPTION]

Below are actuarial assumptions used in accounting
for the plan:

                                                           1998         1997       1996
Weighted-average discount rate                        6.5%         6.5%    7.0%
Rate of increase in future compensation levels        5.0           5.0     5.0
Expected long-term rate of return on plan assets            8.0     8.0     8.0

PAGE 47

S&T also has a supplemental retirement plan (SERP) for certain key employees. The SERP is unfunded. The balance of actuarial present value of projected benefit obligations related to the SERP are $2,249,000 and $2,110,000 at December 31, 1998 and 1997, respectively. Accrued pension cost related to the SERP was $1,971,000 and $1,779,000 at December 31, 1998 and 1997, respectively. Net periodic pension cost related to the SERP was $244,000, $499,000 and $238,000 at December 31, 1998, 1997 and 1996, respectively. The actuarial assumptions are the same as those used in the previous tables.

The Bank maintains a Thrift Plan (Plan) in which substantially all employees are eligible to participate. The Bank makes matching contributions to the Plan up to 3% of participants' eligible compensation and may make additional contributions as limited by the Plan. Contributions to the Plan are cash or unallocated Employee Stock Option Plan (ESOP) shares. Expense related to these contributions amounted to $813,000, $990,000 and $950,000 in 1998, 1997 and 1996, respectively.

On December 30, 1988, S&T sold 560,000 shares of common stock, which were held in treasury, to its newly created ESOP for $2,800,000. The funds were obtained by the ESOP through a loan from a bank. S&T has guaranteed the loan, which had a maximum term of 10 years and bears interest at 80% of the lender's prime rate. The loan terms required quarterly interest and annual principal payments. The balance of this loan was zero and $130,000 on December 31, 1998 and 1997, respectively, and was included in other borrowed funds with an offsetting reduction in shareholders' equity shown as deferred compensation in the accompanying consolidated balance sheets. At December 31, 1998, the ESOP had no unallocated shares remaining.

The ESOP covers substantially all regular full-time employees. S&T is obligated to make annual contributions sufficient to enable the ESOP to repay the loan, including interest. Interest expense totaled $10,000 in 1998, $17,000 in 1997 and $19,000 in 1996. Dividends received by the ESOP from S&T for unallocated shares amounted to $18,000 in 1998, $24,000 in 1997 and $24,000 in 1996, which were used for debt service. Dividends on allocated shares are paid to the participants' accounts in the Plan. Deferred compensation arising from the guarantee of the ESOP borrowing was charged to operations as contributions were made to the ESOP.

Since the ESOP was established prior to the issuance of SOP 93-6, "Employers' Accounting for Employee Stock Ownership Plans," ESOP compensation expense is currently based upon the cost of unearned shares as prescribed by SOP 76-3, "Accounting Practices for Certain Employee Stock Ownership Plans." The earnings per share effects of unearned ESOP shares are not material. The expense associated with the release of ESOP shares in 1998, 1997 and 1996 was $130,000, $100,000 and $110,000, respectively. No allocated ESOP shares are subject to repurchase obligations.

Note P
Incentive Stock Plan and Dividend Reinvestment Plan

S&T adopted an Incentive Stock Plan in 1992 (Stock Plan) that provides for granting incentive stock options, nonstatutory stock options, and stock appreciation rights (SARs). On October 17, 1994, the Stock Plan was amended to include outside directors. The Stock Plan covers a maximum of 3,200,000 shares of S&T common stock and expires 10 years from the date of board approval.

S&T grants stock options equal to the fair market value of S&T common stock on the grant date. SARs may be granted concurrently with the grant of nonstatutory stock options (Related SARs) or independently. SARs entitle the holder to receive either cash or shares of S&T common stock equal to the excess of the fair market value of the shares subject to the option over the fair market value of a share of S&T common stock on the grant date.

Stock options and SARs granted under the Stock Plan are not exercisable before the six-month vesting period from the grant date. There were no SARs or Related SARs issued or outstanding at December 31, 1998 and 1997.

PAGE 48

The following table summarizes the changes in the incentive stock options outstanding during 1998, 1997 and 1996:

[CAPTION]

                                              1998               1997            1996
                                                   Weighted                  Weighted               Weighted
                                            Number  Average Number   Average Number  Average
                                       of     Option   of      Option   of     Option
                              Shares    Price Shares     Price Shares     Price
Outstanding at beginning of
   year                            1,457,822 $14.21     1,112,000       $12.06    823,000 $10.45
   Granted                         334,800  27.75         372,822        20.38   333,000        15.44
   Exercised                    (512,050) 10.90   (27,000)      10.66     (44,000)      7.55
Outstanding at end of year       1,280,572 $19.08       1,457,822       $14.21  1,112,000       $12.06
Exercisable at end of year         945,772 $16.01       1,085,000 $12.10        779,000 $10.62

The following table summarizes the range of exercise prices at December 31:
[CAPTION]

                        1998                           1997                         1996
                                             Contractual                                      Contractual                                     Contractual
                 Shares Exercise Remaining      Shares   Exercise       Remaining       Shares  Exercise           Remaining
             Outstanding         Price     Life(Yrs) Outstanding Price Life(Yrs) Outstanding Price       Life(Yrs)
1992               -            -            -         80,000   $ 6.82           5            80,000        $ 6.82         6
1993               -          -      -        124,000      8.63           6           128,000         8.63          7
1994        121,650      $ 9.50           6        227,000      9.50      7          241,000        9.50           8
1995        214,200     13.13        7        324,000     13.13           8          330,000       13.13             9
1996         254,500      15.44      8        330,000     15.44    9         333,000        15.44          10
1997         355,422      20.38      9       372,822     20.38    10             -              -           -
1998         334,800      27.75     10              -         -    -               -             -           -
Total    1,280,572       $19.08    8.4      1,457,822  $14.21  8.2         1,112,000       $12.06         8.6

Options are granted in December and have a six-month vesting period and a 10-year contractual life.

S&T accounts for stock options in accordance with APB 25. The following proforma information regarding net income and earnings per share assumes the adoption of Statement No. 123 for stock options granted subsequent to December 31, 1994. (Disclosure is not required for options granted prior to 1995). The estimated fair value of the options is amortized to expense over the option and vesting period. The fair value was estimated at the grant date using a Black-Scholes option pricing model with the following weighted-average assumptions for 1998, 1997 and 1996 respectively: risk-free interest rates of 4.45%, 5.77% and 6.12%; a dividend yield of 2.7%, 3% and 3%; volatility factors of the expected market price of S&T's common stock of 0.226, 0.182 and 0.161; and a weighted-average expected life of five years.

[CAPTION]

                                                1998             1997          1996
(dollars in thousands except per share data)
Proforma net income                        $37,030            $32,845           $27,741
Proforma earnings per share-Basic               1.33             1.16           0.99
Proforma earnings per share-Diluted           1.32               1.15           0.98

The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because S&T's employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management's opinion, the existing models do not necessarily provide a reliable single measure of the fair value of its employee stock options.

PAGE 49

S&T also sponsors a dividend reinvestment plan (Dividend Plan) whereby shareholders may purchase shares of S&T common stock at market value with reinvested dividends and voluntary cash contributions. American Stock Transfer and Trust Company, the plan administrator and transfer agent, purchases the shares on the open market to fulfill the Plan's needs.

Note Q
S&T Bancorp, Inc. (parent company only)

Condensed Financial Information

Balance Sheets at December 31:

[CAPTION]

                                                                 1998                1997
(dollars in thousands)
Assets

Cash                                                      $     409             $      19
Investments in:
   Bank subsidiary                                            159,245             169,281
   Nonbank subsidiaries                                  102,301                  95,198
Total Assets                                               $261,955             $264,498

Liabilities

Dividends payable                                           $   4,980           $   4,243
Other borrowed funds                                              -                   130
Other liabilities                                               (2,662)                7
Total Liabilities                                                2,318              4,380
Total Shareholders' Equity                                    259,637             260,118
Total Liabilities and Shareholders' Equity                  $ 261,955           $ 264,498

Statements of Income for the year ended December 31:
[CAPTION]

                                                  1998         1997             1996
(dollars in thousands)
Dividends from bank subsidiary          $ 18,253            $ 15,689     $ 11,835
Investment income                                   84            60             64
Income before equity in undistributed
   net income of subsidiaries                   18,337        15,749          11,899
Equity in undistributed net income of:
   Bank subsidiary                              9,919         13,316          11,949
   Nonbank subsidiaries                    9,707               4,349          4,393
Net Income                                   $ 37,963           $ 33,414            $ 28,241

PAGE 50

[CAPTION]

Statements of Cash Flows for
the year ended December 31:
                                                   1998         1997          1996
(dollars in thousands)
Operating Activities

Net Income                                     $ 37,963     $33,414         $28,241
   Equity in undistributed net income
     of subsidiaries                          (20,499)     (19,640)        (17,102)
   Change in other assets/liabilities         (3,232)                            (408)
Total Provided by Operating Activities       14,232         13,774          10,731

Investing Activities

   Distributions from (to) bank
     subsidiaries                                 23,431            (2,914)           7,100
Total Used in Investing Activities              23,431      (2,914)           7,100

Financing Activities

   Dividends                                 (17,515)     (14,215)         (10,667)
   (Acquisition) sale of treasury stock    (19,758)           848            (4,911)
Total Used in Financing Activities              (37,273)          (13,367)       (15,578)

Increase (decrease) in Cash                        390      (2,507)             2,253
Cash at Beginning of Year                             19             2,526               273
Cash at End of Year                           $    409           $    19            $ 2,526

Note R
Regulatory Matters

S&T is subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet the minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on S&T's financial statements. Under capital guidelines and the regulatory framework for prompt corrective action, S&T must meet specific capital guidelines that involve quantitative measures of S&T's assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. S&T's capital amounts and classification are also subject to qualitative judgements by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require S&T to maintain minimum amounts and ratios of Tier I and Total capital to risk-weighted assets and of Tier I capital to average assets. As of December 31, 1998 and 1997, S&T meets all capital adequacy requirements to which it is subject.

PAGE 51

To be classified as well capitalized, S&T must maintain minimum Tier I risk-based, Total risk-based and Tier I leverage ratios as set forth in the table below:
[CAPTION]

                                                                                                      To Be Well
                                                                       For Capital               Capitalized Under
                                                                        Adequacy                   Prompt Corrective
                                        Actual                 Purposes            Action Provisions
                                        Amount   Ratio    Amount         Ratio  Amount   Ratio
(dollars in thousands)
As of December 31, 1998:
   Total Capital                       $231,159 15.98%  $120,163        8.00%   $150,204        10.00%
   (to Risk Weighted Assets)
   Tier I Capital                      212,975  14.73      60,081       4.00       90,122        6.00
   (to Risk Weighted Assets)
   Tier I Capital                     212,975   10.68      79,781       4.00       99,727        5.00
   (to Average Assets)

As of December 31, 1997:
   Total Capital                       $235,825 18.22%  $103,538 8.00%  $129,422        10.00%
   (to Risk Weighted Assets)
   Tier I Capital                      219,594  16.97     51,769 4.00           77,653  6.00
   (to Risk Weighted Assets)
   Tier I Capital                     219,594 11.70       75,094        4.00       93,867        5.00
   (to Average Assets)

The most recent notification from the Federal Deposit Insurance Corporation categorized S&T Bank as well capitalized under the regulatory framework for corrective action. At December 31, 1998, S&T Bank's Tier I and Total capital ratios were 10.42% and 11.68%, respectively, and Tier I capital to average assets was 7.48%. At December 31, 1997, S&T Bank's Tier I and Total capital ratios were 13.12% and 14.37%, respectively, and Tier I capital to average assets was 9.24%.

PAGE 52

Report of Ernst & Young LLP, Independent Auditors S&T Bancorp, Inc. and Subsidiaries

Shareholders and Board of Directors
S&T Bancorp, Inc.

We have audited the accompanying consolidated balance sheets of S&T Bancorp, Inc. and subsidiaries (S&T) as of December 31, 1998 and 1997, and the related consolidated statements of income, changes in shareholders' equity, and cash flows for each of the three years in the period ended December 31, 1998. These financial statements are the responsibility of S&T's management. Our responsibility is to express an opinion on these financial statements based on our audits. We did not audit the 1996 financial statements of Peoples Bank of Unity which statements reflect net interest income constituting 18.4% of the related consolidated totals. Those statements were audited by other auditors whose report thereon has been furnished to us, and our opinion, insofar as it relates to data included for Peoples Bank of Unity, is based solely on the report of other auditors.

We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, based on our audits and, for 1996, the report of other auditors, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of S&T Bancorp, Inc. and subsidiaries at December 31, 1998 and 1997 and the consolidated results of their operations and their cash flows for each of three years in the period ended December 31, 1998, in conformity with generally accepted accounting principles.

Pittsburgh, PA
January 15, 1999

PAGE 53

Stock Prices and Dividend Information
Selected Financial Information
S&T Bancorp, Inc. and Subsidiaries

Stock Prices and Dividend Information

S&T Bancorp, Inc.'s common stock is listed on the Nasdaq National Market System (Nasdaq). The range of sales prices for the years 1998 and 1997 are as follows and are based upon information obtained from Nasdaq. As of the close of business January 28, 1999, there were 3,181 shareholders of record of S&T Bancorp, Inc. Dividends paid by S&T are provided from the Bank's dividends to S&T. In addition, the payment of dividends by the Bank to S&T is subject to the restrictions described in Note K to the Consolidated Financial Statements. The cash dividends declared shown below represent the historical per share amounts for S&T Bancorp, Inc.'s common stock, restated to record the effect of a two-for-one common stock split in the form of a 100% stock dividend distributed on October 30, 1998.

[CAPTION]

                        Price Range of Common Stock
1998                         Low            High                   Cash Dividends Declared
Fourth Quarter           $24.00          $29.50                                           $0.18
Third Quarter              23.38           28.75                                            0.17
Second Quarter            25.38    28.38                                            0.17
First Quarter              20.88        28.88                                       0.15

1997
Fourth Quarter           $19.25          $22.25                                           $0.15
Third Quarter              16.63          19.38                                 0.14
Second Quarter            14.75         18.44                                           0.14
First Quarter                   14.88           18.38                                           0.13

Selected Financial Data
[CAPTION]

Year Ended December 31:              1998            1997            1996            1995            1994
(dollars in thousands, except per share data)
Income Statement

Interest income             $151,438     $141,101        $132,442        $127,020        $112,559
Interest expense                     69,156        62,284          58,589          57,677          46,643
Provisions for loan losses         10,550           5,000           5,175       4,220           3,600
Net interest income after
   provision for loan losses     71,732    73,817       68,678     65,123       62,316
Noninterest income                 24,418          16,441          11,997           9,147           7,611
Noninterest expense               41,988           43,198          42,398          40,276          38,679
Income before income taxes         54,162          47,060          38,277          33,994          31,248
Applicable income taxes              16,199        13,646          10,036           9,152           8,276
Net income                        $37,963       $ 33,414        $ 28,241         $ 24,842        $ 22,972

Per Share Data1

Net income-Basic                    $  1.37      $   1.18       $   1.00        $   0.87        $   0.80
Net income-Diluted                   1.35            1.17           1.00             0.87            0.80
Dividends declared                   0.66            0.56            0.47            0.37            0.31
Book value                           9.38            9.20            8.01            7.50            6.39

1 Per share amounts have been restated to record the effect of a two-for-one common stock split in the form of a 100% stock dividend distributed on October 30, 1998.

PAGE 54

Selected Financial Data
Quarterly Selected Financial Data
S&T Bancorp, Inc. and Subsidiaries

Selected Financial Data
Balance Sheet Totals (period end):

<CAPITAL>

Year Ended December 31:            1998      1997             1996            1995            1994
(dollars in thousands)
Total assets               $2,069,611   $1,920,291      $1,787,045      $1,689,728      $1,580,252
Securities                      591,486    568,220         500,061         492,236        466,875
Net loans                      1,339,232         1,253,326       1,181,407      1,086,317        1,011,165
Total deposits            1,380,063      1,284,658      1,270,367       1,216,547       1,142,571
Securities sold under
   repurchase agreements          138,825          170,124         114,205         122,794         169,871
Other liabilities                291,086        205,391         176,355         136,333         84,974
Total shareholders' equity      259,637    260,118      226,118    214,054         182,836

[CAPTION]

Quarterly Selected Financial Data
                                        1998                                           1997
                     Fourth        Third            Second          First           Fourth          Third           Second         First
                           Quarter         Quarter         Quarter         Quarter         Quarter          Quarter        Quarter        Quarter
(dollars in thousands, except per share data)
Summary of Operations

Income Statement:
Interest income   $   38,373    $   38,345      $   37,548      $   37,172      $   36,412      $    35,488      $ 34,808 $   34,391
Interest expense             17,500         17,577          17,247          16,832          16,465           15,748       15,034            15,037
Provision for loan
 losses                2,500         2,000           4,000           2,050           1,900              750           800           1,550
Net interest income
 after provision
 for loan losses            18,373          18,768          16,301          18,290          18,047           18,990       18,974            17,804
Noninterest income          6,318            4,328           8,326           5,446           4,725            3,224         4,473            4,020
Noninterest expense       10,730             9,623          11,049          10,586          10,605            9,991        11,655          10,946
Income before income
  taxes                      13,961         13,473          13,578          13,150          12,167          12,223         11,792          10,878
Applicable income
  taxes                4,188         3,971           4,131           3,909           3,456            3,575         3,478           3,137
Net income             $    9,773       $    9,502      $    9,447      $    9,241      $    8,711      $     8,648     $  8,314 $    7,741

Per Share Data1

Net income-Basic         $     0.35     $     0.35      $     0.34      $     0.33      $     0.31      $     0.31 $     0.30   $     0.28
Net income-Diluted      0.35            0.34            0.34            0.33            0.31       0.30              0.29             0.27
Dividends declared           0.18             0.17            0.17            0.15            0.15            0.14            0.14            0.13
Book value                   9.38             9.11            9.03            9.06            9.20            8.85           8.45             8.10

Average Balance Sheet Totals

Total assets      $2,048,886    $2,003,268      $1,980,861      $1,946,261      $1,877,348      $1,815,999      $1,774,740      $1,784,502
Securities               540,872           539,118         528,492         516,558         484,187         436,882         419,737         449,542
Net loans                1,327,705       1,297,881       1,278,235       1,261,066       1,241,063      1,227,670        1,200,365      1,192,592
Total deposits      1,368,104    1,330,045       1,316,782       1,292,547       1,286,784       1,291,130       1,254,535       1,244,384
Securities sold
  under repurchase
  agreements            141,065    162,655         209,176         171,371         136,540         114,583         127,487         127,346
Other liabilities          280,921         258,007         199,712         222,603         196,308         162,738         155,884        179,736
Total shareholders'
  equity                    258,796        252,561         255,191         259,740         257,715         247,548         236,834         232,245

1 Per share amounts have been restated to record the effect of a two-for-one common stock split in the form of a 100% stock dividend distributed on October 30, 1998.


S&T Bank, a bank incorporated under the laws of Pennsylvania

S&T Investment Company, Inc., an investment holding company incorporated under the laws of Delaware.

Commonwealth Trust Credit Life Insurance Company, a joint venture, incorporated under the laws of Arizona.


Consent of Independent Auditors

We consent to the incorporation by reference in the Registration Statements (Form S-8, No. 33-60530 and Form S-3, No. 3-44164) pertaining to the 1992 Incentive Stock Option Plan and the Dividend Reinvestment Plan of S&T Bancorp, Inc. and subsidiaries, respect- ively, of our report dated January 15, 1999, with respect to the consolidated financial statments of S&T Bancorp, Inc. and subsidiaries incorporated by reference in the Annual Report (Form 10-K) for the year ended December 31, 1998.

/s/ Ernst & Young LLP

Pittsburgh, Pennsylvania
March 22, 1999


CONSENT OF INDEPENDENT AUDITORS

We consent to the use in the Annual Report on Form 10-K under the Securities Exchange Act of 1934 of S&T Bancorp, Inc. for the year ended December 31, 1998, of our report dated February 10, 1997 insofar as such report relates to the financial statements of Peoples Bank of Unity for the year ended December 31, 1996.

/s/ S.R. Snodgrass, A.C.

Wexford, PA
March 22, 1999


REPORT OF INDEPENDENT AUDITORS

Board of Director and Stockholders
Peoples Bank of Unity

We have audited the accompanying balance sheet of Peoples Bank of Unity as of December 31, 1996 and 1995, and the related statments of income, changes in stockholders' equity, and cash flows for each of the three years in the period ended December 31, 1996. These financial statements are the responsibility of the Bank's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of Peoples Bank of Unity as of December 31, 1996 and 1995, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 1996, in conformity with generally accepted accounting principles.

As explained in the notes to the financial statments, effective January 1, 1995, the Bank changed its method of accounting for the impairment of loans and related allowance for loan losses, and effective January 1, 1994, changed its method of accounting for investment securities.

/s/ S.R. Snodgrass, A.C.

Wexford, Pennsylvania
February 10, 1997


ARTICLE 9
"This schedule contains summary financial information extracted from SEC Form 10-K and qualified to its entirety by reference to such financial statements."


PERIOD TYPE YEAR
FISCAL YEAR END DEC 31 1998
PERIOD END DEC 31 1998
CASH 48,736
INT BEARING DEPOSITS 53
FED FUNDS SOLD 19,300
TRADING ASSETS 0
INVESTMENTS HELD FOR SALE 565,141
INVESTMENTS CARRYING 26,345
INVESTMENTS MARKET 27,161
LOANS 1,339,232
ALLOWANCE 26,677
TOTAL ASSETS 2,069,611
DEPOSITS 1,380,063
SHORT TERM 138,825
LIABILITIES OTHER 51,018
LONG TERM 240,068
PREFERRED MANDATORY 0
PREFERRED 0
COMMON 74,285
OTHER SE 185,352
TOTAL LIABILITIES AND EQUITY 2,069,611
INTEREST LOAN 115,081
INTEREST INVEST 36,043
INTEREST OTHER 314
INTEREST TOTAL 151,438
INTEREST DEPOSIT 49,570
INTEREST EXPENSE 19,586
INTEREST INCOME NET 82,282
LOAN LOSSES 10,550
SECURITIES GAINS 10,722
EXPENSE OTHER 41,988
INCOME PRETAX 54,162
INCOME PRE EXTRAORDINARY 54,162
EXTRAORDINARY 0
CHANGES 0
NET INCOME 37,963
EPS PRIMARY 1.37
EPS DILUTED 1.35
YIELD ACTUAL 4.61
LOANS NON 2,933
LOANS PAST 0
LOANS TROUBLED 0
LOANS PROBLEM 0
ALLOWANCE OPEN 20,427
CHARGE OFFS 5,999
RECOVERIES 1,699
ALLOWANCE CLOSE 26,677
ALLOWANCE DOMESTIC 26,677
ALLOWANCE FOREIGN 0
ALLOWANCE UNALLOCATED 6,096