EXHIBIT 4.1

OTTER TAIL CORPORATION

2014 STOCK INCENTIVE PLAN

Section 1. Purpose .

The purpose of the Plan is to promote the interests of the Company and its shareholders by aiding the Company in attracting and retaining employees, officers, consultants, independent contractors, advisors and non-employee Directors capable of assuring the future success of the Company, to offer such persons incentives to put forth maximum efforts for the success of the Company’s business and to compensate such persons through various stock-based arrangements and provide them with opportunities for stock ownership in the Company, thereby aligning the interests of such persons with the Company’s shareholders.

Section 2. Definitions .

As used in the Plan, the following terms shall have the meanings set forth below:

(a) “Affiliate” shall mean (i) any entity that, directly or indirectly through one or more intermediaries, is controlled by the Company and (ii) any entity in which the Company has a significant equity interest, in each case as determined by the Committee.

(b) “Award” shall mean any Option, Stock Appreciation Right, Restricted Stock, Restricted Stock Unit, Dividend Equivalent, Performance Award, Stock Award or Other Stock-Based Award granted under the Plan.

(c) “Award Agreement” shall mean any written agreement, contract or other instrument or document evidencing an Award granted under the Plan. An Award Agreement may be in an electronic medium and need not be signed by a representative of the Company or the Participant. Each Award Agreement shall be subject to the applicable terms and conditions of the Plan and any other terms and conditions (not inconsistent with the Plan) determined by the Committee.

(d) “Board” shall mean the Board of Directors of the Company.

(e) “Change in Control” shall mean any one of the following events for Awards granted under the Plan:

(i) The acquisition by any person, entity or “group,” within the meaning of Sections 13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), other than the Company or any of its Affiliates, or any employee benefit plan of the Company and/or one or more of its Affiliates, of beneficial ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 25% or more of either the then outstanding Common Shares or the combined voting power of the Company’s then outstanding voting securities in a transaction or series of transactions not approved in advance by a vote of at least three-quarters of the Continuing Directors (as hereinafter defined); or

(ii) Individuals who, as of the grant date of the Award, constitute the Board of Directors of the Company (generally the “Directors” and as of the grant date of the Award the “Continuing Directors”) cease for any reason to constitute at least a majority thereof, provided that any person becoming a Director subsequent to the Grant Date whose nomination for election was approved in advance by a vote of at least three-quarters of the Continuing Directors (other than a nomination of an individual whose initial assumption of office is in connection with an actual or threatened solicitation with respect to the election or removal of the Directors of the Company, as such terms are used in Rule 14a-11 of Regulation 14A under the Exchange Act) shall be deemed to be a Continuing Director; or

(iii) The consummation of a reorganization, merger, consolidation, liquidation or dissolution of the Company or of the sale (in one transaction or a series of related transactions) of all or substantially all of the assets of the Company other than a reorganization, merger, consolidation, liquidation, dissolution or sale approved in advance by a vote of at least three-quarters of the Continuing Directors.

(f) “Code” shall mean the Internal Revenue Code of 1986, as amended from time to time, and any regulations promulgated thereunder.

(g) “Committee” shall mean the Compensation Committee of the Board or any successor committee of the Board designated by the Board to administer the Plan. The Committee shall be comprised of not less than such number of Directors as shall be required to permit Awards granted under the Plan to qualify under Rule 16b-3, and each member of the Committee shall be a “Non-Employee Director” within the meaning of Rule 16b-3 and an “outside director” within the meaning of Section 162(m). The Company expects to have the Plan administered in accordance with the requirements for the award of “qualified performance-based compensation” within the meaning of Section 162(m).

(h) “Company” shall mean Otter Tail Corporation, a Minnesota corporation, or any successor corporation.

(i) “Director” shall mean a member of the Board.

(j) “Dividend Equivalent” shall mean any right granted under Section 6(d) of the Plan.

(k) “Eligible Person” shall mean any employee, officer, consultant, independent contractor, advisor or non-employee Director providing services to the Company or any Affiliate whom the Committee determines to be an Eligible Person. An Eligible Person must be a natural person.

(l) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended.

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(m) “Fair Market Value” shall mean, with respect to any property (including, without limitation, any Shares or other securities), the fair market value of such property determined by such methods or procedures as shall be established from time to time by the Committee. Notwithstanding the foregoing, unless otherwise determined by the Committee, the Fair Market Value of Shares on a given date for purposes of the Plan shall be the closing sale price of the Shares as reported on the NASDAQ National Market System on such date, or if the NASDAQ National Market System is not open for trading on such date, on the most recent preceding date when the NASDAQ National Market System is open for trading.

(n) “Incentive Stock Option” shall mean an option granted under Section 6(a) of the Plan that is intended to meet the requirements of Section 422 of the Code or any successor provision.

(o) “Non-Qualified Stock Option” shall mean an option granted under Section 6(a) of the Plan that is not intended to be an Incentive Stock Option.

(p) “Option” shall mean an Incentive Stock Option or a Non-Qualified Stock Option.

(q) “Other Stock-Based Award” shall mean any right granted under Section 6(g) of the Plan.

(r) “Participant” shall mean an Eligible Person designated to be granted an Award under the Plan.

(s) “Performance Award” shall mean any right granted under Section 6(e) of the Plan.

(t) “Performance Goal” shall mean one or more of the following performance goals, either individually, alternatively or in any combination, applied on a corporate, subsidiary, division, business unit, line of business or product basis: sales, revenue, costs, expenses, earnings (including one or more of net profit after tax, gross profit, operating profit, earnings before interest and taxes, earnings before interest, taxes, depreciation and amortization and net earnings), earnings per share, earnings per share from continuing operations, operating income, pre-tax income, operating income margin, net income, margins (including one or more of gross, operating and net income margins), ratios (including one or more of price to earnings, debt to assets, debt to net assets and ratios regarding liquidity, solvency, productivity or risk) returns (including one or more of return on actual or proforma assets, net assets, equity, investment, capital and net capital employed), stockholder return (including total stockholder return relative to an index or peer group), stock price, market capitalization, economic value added, cash generation, cash flow (including operating cash flow, free cash flow and cash flow return on equity), unit volume, working capital, market share, cost reductions and strategic plan development and implementation. Such goals may reflect whole corporate entity or business unit performance or a relative comparison to the performance of a peer group of entities or other external measure of the selected performance criteria. To the extent consistent with Section 162(m), the Committee may, when it establishes performance criteria, also provide for the adjustment for charges related to an event or occurrence which the Committee determines is

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appropriate for adjustment, including, but not limited to, any of the following events: asset write-downs; litigation or claim judgments or settlements; changes in tax law, accounting principles or other such laws or provisions affecting reported results; severance, contract termination and other costs related to exiting certain business activities; acquisitions; and gains or losses from the disposition of businesses or assets or from the early extinguishment of debt.

(u) “Person” shall mean any individual or entity, including a corporation, partnership, limited liability company, association, joint venture or trust.

(v) “Plan” shall mean this Otter Tail Corporation 2014 Stock Incentive Plan, as amended from time to time.

(w) “Restricted Stock” shall mean any Share granted under Section 6(c) of the Plan.

(x) “Restricted Stock Unit” shall mean any unit granted under Section 6(c) of the Plan evidencing the right to receive a Share (or a cash payment equal to the Fair Market Value of a Share) at some future date.

(y) “Rule 16b-3” shall mean Rule 16b-3 promulgated by the Securities and Exchange Commission under the Exchange Act or any successor rule or regulation.

(z) “Section 162(m)” shall mean Section 162(m) of the Code, or any successor provision, and the applicable Treasury Regulations promulgated thereunder.

(aa) “Section 409A” shall mean Section 409A of the Code, or any successor provision, and applicable Treasury Regulations and other applicable guidance thereunder.

(bb) “Shares” shall mean shares of Common Stock, $5 par value per share, of the Company or such other securities or property as may become subject to Awards pursuant to an adjustment made under Section 4(c) of the Plan.

(cc) “Specified Employee” shall mean a specified employee as defined in Code Section 409A(a)(2)(B) or applicable proposed or final regulations under Code Section 409A.

(dd) “Stock Appreciation Right” shall mean any right granted under Section 6(b) of the Plan.

(ee) “Stock Award” shall mean any Share granted under Section 6(f) of the Plan.

Section 3. Administration .

(a) Power and Authority of the Committee . The Plan shall be administered by the Committee. Subject to the express provisions of the Plan and to applicable law, the Committee shall have full power and authority to: (i) designate Participants; (ii) determine the type or types of Awards to be granted to each Participant under the Plan; (iii) determine the number of Shares to be covered by (or the method by which payments or other rights are to be

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calculated in connection with) each Award; (iv) determine the terms and conditions of any Award or Award Agreement, including any terms relating to the forfeiture of any Award and the forfeiture, recapture or disgorgement of any cash, Shares, other securities, other Awards, other property and other amounts payable with respect to any Award; (v) amend the terms and conditions of any Award or Award Agreement, provided, however, that, except as otherwise permitted in connection with an event as provided in Section 4(c) hereof, the Committee shall not reprice, adjust or amend the exercise price of Options or the grant price of Stock Appreciation Rights previously awarded to any Participant, whether through amendment, cancellation and exchange for cash or another Award, a replacement grant, or any other means; (vi) accelerate the exercisability of any Award or the lapse of any restrictions relating to any Award; (vii) determine whether, to what extent and under what circumstances Awards may be exercised in cash, Shares, other securities, other Awards or other property, or canceled, forfeited or suspended; (viii) determine whether, to what extent and under what circumstances cash, Shares, other securities, other Awards, other property and other amounts payable with respect to an Award under the Plan shall be deferred either automatically or at the election of the holder of the Award or the Committee; (ix) interpret and administer the Plan and any instrument or agreement, including any Award Agreement, relating to the Plan; (x) establish, amend, suspend or waive such rules and regulations and appoint such agents as it shall deem appropriate for the proper administration of the Plan; (xi) make any other determination and take any other action that the Committee deems necessary or desirable for the administration of the Plan; and (xii) adopt such modifications, rules, procedures and subplans as may be necessary or desirable to comply with provisions of the laws of non-U.S. jurisdictions in which the Company or an Affiliate may operate, including, without limitation, establishing any special rules for Affiliates, Eligible Persons or Participants located in any particular country, in order to meet the objectives of the Plan and to ensure the viability of the intended benefits of Awards granted to Participants located in such non-United States jurisdictions. Unless otherwise expressly provided in the Plan, all designations, determinations, interpretations and other decisions under or with respect to the Plan or any Award or Award Agreement shall be within the sole discretion of the Committee, may be made at any time and shall be final, conclusive and binding upon any Participant, any holder or beneficiary of any Award or Award Agreement, and any employee of the Company or any Affiliate.

(b) Delegation . The Committee may delegate its powers and duties under the Plan to one or more Directors or officers of the Company, subject to such terms, conditions and limitations as the Committee may establish in its sole discretion; provided, however, that the Committee shall not delegate its powers and duties under the Plan (i) with regard to officers or directors of the Company or any Affiliate who are subject to Section 16 of the Exchange Act or (ii) in such a manner as would cause the Plan not to comply with the requirements of Section 162(m).

(c) Power and Authority of the Board of Directors . Notwithstanding anything to the contrary contained herein, the Board may, at any time and from time to time, without any further action of the Committee, exercise the powers and duties of the Committee under the Plan, unless the exercise of such powers and duties by the Board would cause the Plan not to comply with the requirements of Rule 16b-3 or Section 162(m).

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Section 4. Shares Available for Awards .

(a) Shares Available . Subject to adjustment as provided in Section 4(c) of the Plan, the aggregate number of Shares that may be issued under all Awards under the Plan shall be 1,900,000. Shares to be issued under the Plan may be authorized but unissued Shares, treasury shares or Shares acquired in the open market or otherwise. If an Award terminates or is forfeited or cancelled without the issuance of any Shares, or if any Shares covered by an Award or to which an Award relates are not issued for any other reason, then the number of Shares counted against the aggregate number of Shares available under the Plan with respect to such Award, to the extent of any such termination, forfeiture, cancellation or other event, shall again be available for granting Awards under the Plan. If Shares of Restricted Stock are forfeited or otherwise reacquired by the Company prior to vesting, whether or not dividends have been paid on such Shares, then the number of Shares counted against the aggregate number of Shares available under the Plan with respect to such Award of Restricted Stock, to the extent of any such forfeiture or reacquisition by the Company, shall again be available for granting Awards under the Plan. Shares that are withheld in full or partial payment to the Company of the purchase or exercise price relating to any Award, or Shares that are acquired by the Company on the open market with cash delivered to the Company for any such purposes, or in connection with the satisfaction of tax obligations relating to any Award shall not be available for granting Awards under the Plan.

(b) Accounting for Awards . For purposes of this Section 4, if an Award entitles the holder thereof to receive or purchase Shares, the number of Shares covered by such Award or to which such Award relates shall be counted on the date of grant of such Award against the aggregate number of Shares available for granting Awards under the Plan. For Stock Appreciation Rights settled in Shares upon exercise, the aggregate number of Shares with respect to which the Stock Appreciation Right is exercised, rather than the number of Shares actually issued upon exercise, shall be counted against the number of Shares available for Awards under the Plan. If an Option is not exercised, as permitted by Section 6(a)(iii), the number of Shares counted against the aggregate number of Shares available under the Plan with respect to such Award shall be the gross amount of Shares subject to the Award. Awards that do not entitle the holder thereof to receive or purchase Shares and Awards that are settled in cash shall not be counted against the aggregate number of Shares available for Awards under the Plan.

(c) Adjustments . In the event that any dividend or other distribution (whether in the form of cash, Shares, other securities or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase or exchange of Shares or other securities of the Company, issuance of warrants or other rights to purchase Shares or other securities of the Company or other similar corporate transaction or event affects the Shares such that an adjustment is necessary in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan, then the Committee shall, in such manner as it may deem equitable, adjust any or all of (i) the number and type of Shares (or other securities or other property) that thereafter may be made the subject of Awards, (ii) the number and type of Shares (or other securities or other property) subject to outstanding Awards, (iii) the purchase or exercise price with respect to any Award and (iv) the limitations contained in Section 4(d) of the Plan.

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(d) Award Limitations Under the Plan .

(i) Section 162(m) Limitation for Certain Types of Awards . No Eligible Person may be granted Options, Stock Appreciation Rights or any other Award or Awards under the Plan, the value of which Award or Awards is based solely on an increase in the value of the Shares after the date of grant of such Award or Awards, for more than 500,000 Shares (subject to adjustment as provided in Section 4(c) of the Plan) in the aggregate in any calendar year.

(ii) Section 162(m) Limitation for Performance Awards . The maximum amount payable to any Participant that may be a “covered person” within the meaning of Section 162(m) pursuant to all Performance Awards which are intended to represent “qualified performance-based compensation” within the meaning of Section 162(m) in the aggregate in any calendar year shall be $5,000,000 in value, whether payable in cash, Shares or other property. This limitation does not apply to any Award subject to the limitation contained in Section 4(d)(i) of the Plan.

Section 5. Eligibility .

Any Eligible Person shall be eligible to be designated a Participant. In determining which Eligible Persons shall receive an Award and the terms of any Award, the Committee may take into account the nature of the services rendered by the respective Eligible Persons, their present and potential contributions to the success of the Company or such other factors as the Committee, in its discretion, shall deem relevant. Notwithstanding the foregoing, an Incentive Stock Option may only be granted to full-time or part-time employees (which term as used herein includes, without limitation, officers and Directors who are also employees), and an Incentive Stock Option shall not be granted to an employee of an Affiliate unless such Affiliate is also a “subsidiary corporation” of the Company within the meaning of Section 424(f) of the Code or any successor provision. Further, notwithstanding the foregoing, Options and Stock Appreciation Rights shall not be granted to an Eligible Person providing direct services to an Affiliate unless the Company has a “controlling interest” in such Affiliate within the meaning of Treas. Reg. Sec. 1.409A-1(b)(5)(iii)(E)(1).

Section 6. Awards .

(a) Options . The Committee is hereby authorized to grant Options to Eligible Persons with the following terms and conditions and with such additional terms and conditions not inconsistent with the provisions of the Plan as the Committee shall determine:

(i) Exercise Price . The purchase price per Share purchasable under an Option shall be determined by the Committee and shall not be less than 100% of the Fair Market Value of a Share on the date of grant of such Option; provided, however, that the Committee may designate a per share exercise price below Fair Market Value on the date of grant (A) to the extent necessary or appropriate, as determined by the Committee, to satisfy applicable legal or regulatory requirements of a foreign jurisdiction or (B) if the Option is granted in substitution for a stock option previously granted by an entity that is acquired by or merged with the Company or an Affiliate.

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(ii) Option Term . The term of each Option shall be fixed by the Committee but shall not be longer than 10 years from the date of grant.

(iii) Time and Method of Exercise . The Committee shall determine the time or times at which an Option may be exercised in whole or in part and the method or methods by which, and the form or forms (including, without limitation, cash, Shares, other securities, other Awards or other property, or any combination thereof, having a Fair Market Value on the exercise date equal to the applicable exercise price) in which, payment of the exercise price with respect thereto may be made or deemed to have been made. Alternatively, the Committee may, in its discretion, permit a Non-Qualified Stock Option (but not an Incentive Stock Option) to be exercised by delivering to the Participant a number of Shares having an aggregate Fair Market Value (determined as of the date of exercise) equal to the excess, if positive, of the Fair Market Value of the Shares underlying the Non-Qualified Stock Option being exercised, on the date of exercise, over the exercise price of the Non-Qualified Stock Option for such Shares.

(b) Stock Appreciation Rights . The Committee is hereby authorized to grant Stock Appreciation Rights to Eligible Persons subject to the terms of the Plan and any applicable Award Agreement. A Stock Appreciation Right granted under the Plan shall confer on the holder thereof a right to receive upon exercise thereof the excess of (i) the Fair Market Value of one Share on the date of exercise (or, if the Committee shall so determine, at any time during a specified period before or after the date of exercise) over (ii) the grant price of the Stock Appreciation Right as specified by the Committee, which price shall not be less than 100% of the Fair Market Value of one Share on the date of grant of the Stock Appreciation Right. Subject to the terms of the Plan and any applicable Award Agreement, the grant price, term, methods of exercise, dates of exercise, methods of settlement and any other terms and conditions of any Stock Appreciation Right shall be as determined by the Committee; provided, however, that the term of each Stock Appreciation Right shall not be longer than 10 years from the date of grant. The Committee may impose such conditions or restrictions on the exercise of any Stock Appreciation Right as it may deem appropriate.

(c) Restricted Stock and Restricted Stock Units . The Committee is hereby authorized to grant Awards of Restricted Stock and Restricted Stock Units to Eligible Persons with the following terms and conditions and with such additional terms and conditions not inconsistent with the provisions of the Plan as the Committee shall determine:

(i) Restrictions . Shares of Restricted Stock and Restricted Stock Units shall be subject to such restrictions as the Committee may impose (including, without limitation, any limitation on the right to vote a Share of Restricted Stock or the right to receive any dividend or other right or property with respect thereto), which restrictions may lapse separately or in combination at such time or times, in such installments or otherwise, as the Committee may deem appropriate. Notwithstanding the foregoing, the Committee may permit acceleration of vesting of such Awards in certain events including, but not limited to, the Participant’s death, disability, termination or retirement or a Change in Control.

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(ii) Issuance and Delivery of Shares . Any Restricted Stock granted under the Plan shall be issued at the time such Awards are granted and may be evidenced in such manner as the Committee may deem appropriate, including book-entry registration or issuance of a stock certificate or certificates, which certificate or certificates shall be held by the Company. Such certificate or certificates shall be registered in the name of the Participant and shall bear an appropriate legend referring to the restrictions applicable to such Restricted Stock. Shares representing Restricted Stock that are no longer subject to restrictions shall be delivered to the Participant promptly after the applicable restrictions lapse or are waived. In the case of Restricted Stock Units, no Shares shall be issued at the time such Awards are granted. Upon the lapse or waiver of restrictions and the restricted period relating to Restricted Stock Units evidencing the right to receive Shares, such Shares shall be issued and delivered to the holder of the Restricted Stock Units.

(iii) Forfeiture . Except as otherwise determined by the Committee, upon a Participant’s termination of employment or resignation or removal as a Director (in either case, as determined under criteria established by the Committee) during the applicable restriction period, all Shares of Restricted Stock and all Restricted Stock Units held by the Participant at such time shall be forfeited and reacquired by the Company; provided, however, that the Committee may, when it finds that a waiver would be in the best interest of the Company, waive in whole or in part any or all remaining restrictions with respect to Shares of Restricted Stock or Restricted Stock Units.

(d) Dividend Equivalents . The Committee is hereby authorized to grant Dividend Equivalents to Eligible Persons under which the Participant shall be entitled to receive payments (in cash, Shares, other securities, other Awards or other property as determined in the discretion of the Committee) equivalent to the amount of cash dividends paid by the Company to holders of Shares with respect to a number of Shares determined by the Committee. Subject to the terms of the Plan and any applicable Award Agreement, such Dividend Equivalents may have such terms and conditions as the Committee shall determine. Notwithstanding the foregoing, the Committee may not grant Dividend Equivalents to Eligible Persons in connection with grants of Options, Stock Appreciation Rights or unvested Performance Awards to such Eligible Persons.

(e) Performance Awards . The Committee is hereby authorized to grant Performance Awards to Eligible Persons subject to the terms of the Plan and any applicable Award Agreement. A Performance Award granted under the Plan (i) may be denominated or payable in cash, Shares (including, without limitation, Restricted Stock and Restricted Stock Units), other securities, other Awards or other property and (ii) shall confer on the holder thereof the right to receive payments, in whole or in part, upon the achievement of one or more performance goals during such performance periods as the Committee shall establish. Subject to the terms of the Plan, the performance goals to be achieved during any performance period, the length of any performance period, the amount of any Performance Award granted, the amount of any payment or transfer to be made pursuant to any Performance Award and any other terms and conditions of any Performance Award shall be determined by the Committee. Performance

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Awards that are granted to Eligible Persons who may be “covered employees” under Section 162(m) and that are intended to be “qualified performance-based compensation” within the meaning of Section 162(m), to the extent required by Section 162(m), shall be conditioned solely on the achievement of one or more objective Performance Goals established by the Committee within the time prescribed by Section 162(m), and shall otherwise comply with the requirements of Section 162(m).

(f) Stock Awards . The Committee is hereby authorized to grant to Eligible Persons Shares without restrictions thereon, as deemed by the Committee to be consistent with the purpose of the Plan. Subject to the terms of the Plan and any applicable Award Agreement, such Stock Awards may have such terms and conditions as the Committee shall determine.

(g) Other Stock-Based Awards . The Committee is hereby authorized to grant to Eligible Persons such other Awards that are denominated or payable in, valued in whole or in part by reference to, or otherwise based on or related to, Shares (including, without limitation, securities convertible into Shares), as are deemed by the Committee to be consistent with the purpose of the Plan. The Committee shall determine the terms and conditions of such Awards, subject to the terms of the Plan and the Award Agreement. Shares, or other securities delivered pursuant to a purchase right granted under this Section 6(g), shall be purchased for consideration having a value equal to at least 100% of the Fair Market Value of such Shares or other securities on the date the purchase right is granted. The consideration paid by the Participant may be paid by such method or methods and in such form or forms (including, without limitation, cash, Shares, other securities, other Awards or other property, or any combination thereof), as the Committee shall determine.

(h) General .

(i) Consideration for Awards . Awards may be granted for no cash consideration or for any cash or other consideration as may be determined by the Committee or required by applicable law.

(ii) Awards May Be Granted Separately or Together . Awards may, in the discretion of the Committee, be granted either alone or in addition to, in tandem with or in substitution for any other Award or any award granted under any other plan of the Company or any Affiliate. Awards granted in addition to or in tandem with other Awards or in addition to or in tandem with awards granted under any other plan of the Company or any Affiliate may be granted either at the same time as or at a different time from the grant of such other Awards or awards.

(iii) Forms of Payment under Awards . Subject to the terms of the Plan and of any applicable Award Agreement, payments or transfers to be made by the Company or an Affiliate upon the grant, exercise or payment of an Award may be made in such form or forms as the Committee shall determine (including, without limitation, cash, Shares, other securities, other Awards or other property, or any combination thereof), and may be made in a single payment or transfer, in installments or on a deferred basis, in each case in accordance with rules and procedures established by the Committee. Such rules and procedures may include, without limitation, provisions for the payment or crediting of reasonable interest on installment or deferred payments or the grant or crediting of Dividend Equivalents with respect to installment or deferred payments.

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(iv) Term of Awards . The term of each Award shall be for a period not longer than 10 years from the date of grant.

(v) Limits on Transfer of Awards . Except as otherwise provided by the Committee or the terms of this Plan, no Award (other than a Stock Award) and no right under any such Award shall be transferable by a Participant for value other than by will or by the laws of descent and distribution. The Committee may establish procedures as it deems appropriate for a Participant to designate a Person or Persons, as beneficiary or beneficiaries, to exercise the rights of the Participant and receive any property distributable with respect to any Award in the event of the Participant’s death. The Committee, in its discretion and subject to such additional terms and conditions as it determines, may permit a Participant to transfer a Non-Qualified Stock Option to any “family member” (as such term is defined in the General Instructions to Form S-8 (or any successor to such Instructions or such Form) under the Securities Act of 1933, as amended) at any time that such Participant holds such Option, provided that such transfers may not be for value (i.e., the transferor may not receive any consideration therefor) and the family member may not make any subsequent transfers other than by will or by the laws of descent and distribution. Each Award under the Plan or right under any such Award shall be exercisable during the Participant’s lifetime only by the Participant (except as provided herein or in an Award Agreement or amendment thereto relating to a Non-Qualified Stock Option) or, if permissible under applicable law, by the Participant’s guardian or legal representative. No Award (other than a Stock Award) or right under any such Award may be pledged, alienated, attached or otherwise encumbered, and any purported pledge, alienation, attachment or encumbrance thereof shall be void and unenforceable against the Company or any Affiliate.

(vi) Restrictions; Securities Exchange Listing . All Shares or other securities delivered under the Plan pursuant to any Award or the exercise thereof shall be subject to such restrictions as the Committee may deem advisable under the Plan, applicable federal or state securities laws and regulatory requirements, and the Committee may cause appropriate entries to be made or legends to be placed on the certificates for such Shares or other securities to reflect such restrictions. If the Shares or other securities are traded on a securities exchange, the Company shall not be required to deliver any Shares or other securities covered by an Award unless and until such Shares or other securities have been admitted for trading on such securities exchange.

(vii) Section 409A Provisions . Notwithstanding anything in the Plan or any Award Agreement to the contrary, to the extent that any amount or benefit that constitutes “deferred compensation” to a Participant under Section 409A of the Code and applicable guidance thereunder is otherwise payable or distributable to a Participant under the Plan or any Award Agreement solely by reason of the occurrence of a Change of Control or due to the Participant’s disability or “separation from service” (as such term is defined under Section 409A), such amount or benefit will not be payable or distributable to the Participant by reason of such circumstance unless the Committee determines in good faith that (i) the circumstances giving rise to such Change of Control, disability or separation from service meet the definition of

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a change in ownership or control, disability or separation from service, as the case may be, in Section 409A(a)(2)(A) of the Code and applicable proposed or final regulations, or (ii) the payment or distribution of such amount or benefit would be exempt from the application of Section 409A by reason of the short-term deferral exemption or otherwise. Any payment or distribution that otherwise would be made to a Participant who is a Specified Employee (as determined by the Committee in good faith) on account of separation from service may not be made before the date which is 6 months after the date of the Specified Employee’s separation from service (or if earlier, upon the Specified Employee’s death) unless the payment or distribution is exempt from the application of Section 409A by reason of the short-term deferral exemption or otherwise.

Section 7. Amendment and Termination; Corrections .

(a) Amendments to the Plan . The Board may amend, alter, suspend, discontinue or terminate the Plan at any time; provided, however, that, notwithstanding any other provision of the Plan or any Award Agreement, prior approval of the shareholders of the Company shall be required for any amendment to the Plan that:

(i) requires shareholder approval under the rules or regulations of the Securities and Exchange Commission or The NASDAQ Stock Market LLC or any other securities exchange that are applicable to the Company;

(ii) increases the number of shares authorized under the Plan as specified in Section 4(a) of the Plan;

(iii) increases the number of shares subject to the limitations contained in Section 4(d)(i) of the Plan or the dollar amount subject to the limitation contained in Section 4(d)(ii) of the Plan;

(iv) permits repricing of Options or Stock Appreciation Rights, which is prohibited by Section 3(a)(v) of the Plan;

(v) permits the award of Options or Stock Appreciation Rights at a price less than 100% of the Fair Market Value of a Share on the date of grant of such Option or Stock Appreciation Right, contrary to the provisions of Section 6(a)(i) of the Plan; and

(vi) would cause Section 162(m) to become unavailable with respect to the Plan.

(b) Amendments to Awards . Subject to the provisions of the Plan, the Committee may waive any conditions of or rights of the Company under any outstanding Award, prospectively or retroactively. Except as otherwise provided in the Plan, the Committee may amend, alter, suspend, discontinue or terminate any outstanding Award, prospectively or retroactively, but no such action may adversely affect the rights of the holder of such Award without the consent of the Participant or holder or beneficiary thereof. The Company intends that Awards under the Plan shall satisfy the requirements of Section 409A to avoid any adverse tax results thereunder, and the Committee shall administer and interpret the Plan and all Award

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Agreements in a manner consistent with that intent. If any provision of the Plan or an Award Agreement would result in adverse tax consequences under Section 409A, the Committee may amend that provision (or take any other action reasonably necessary) to avoid any adverse tax results and no action taken to comply with Section 409A shall be deemed to impair or otherwise adversely affect the rights of any holder of an Award or beneficiary thereof.

(c) Correction of Defects, Omissions and Inconsistencies . The Committee may correct any defect, supply any omission or reconcile any inconsistency in the Plan or in any Award or Award Agreement in the manner and to the extent it shall deem desirable to implement or maintain the effectiveness of the Plan.

Section 8. Income Tax Withholding .

In order to comply with all applicable federal, state, local or foreign income tax laws or regulations, the Company may take such action as it deems appropriate to ensure that all applicable federal, state, local or foreign payroll, withholding, income or other taxes, which are the sole and absolute responsibility of a Participant, are withheld or collected from such Participant. In order to assist a Participant in paying all or a portion of the applicable taxes to be withheld or collected upon exercise or receipt of (or the lapse of restrictions relating to) an Award, the Committee, in its discretion and subject to such additional terms and conditions as it may adopt, may permit the Participant to satisfy such tax obligation by (a) electing to have the Company withhold a portion of the Shares otherwise to be delivered upon exercise or receipt of (or the lapse of restrictions relating to) such Award with a Fair Market Value equal to the amount of such taxes or (b) delivering to the Company Shares other than Shares issuable upon exercise or receipt of (or the lapse of restrictions relating to) such Award with a Fair Market Value equal to the amount of such taxes. The election, if any, must be made on or before the date that the amount of tax to be withheld is determined.

Section 9. General Provisions .

(a) No Rights to Awards . No Eligible Person, Participant or other Person shall have any claim to be granted any Award under the Plan, and there is no obligation for uniformity of treatment of Eligible Persons, Participants or holders or beneficiaries of Awards under the Plan. The terms and conditions of Awards need not be the same with respect to any Participant or with respect to different Participants.

(b) Award Agreements . No Participant shall have rights under an Award granted to such Participant unless and until an Award Agreement shall have been duly executed on behalf of the Company and, if requested by the Company, signed by the Participant, or until such Award Agreement is delivered and accepted through an electronic medium in accordance with procedures established by the Company.

(c) No Rights of Stockholders . Except with respect to Restricted Stock and Stock Awards, neither a Participant nor the Participant’s legal representative shall be, or have any of the rights and privileges of, a stockholder of the Company with respect to any Shares issuable upon the exercise or payment of any Award, in whole or in part, unless and until the Shares have been issued.

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(d) No Limit on Other Compensation Plans or Arrangements . Nothing contained in the Plan shall prevent the Company or any Affiliate from adopting or continuing in effect other or additional compensation plans or arrangements, and such plans or arrangements may be either generally applicable or applicable only in specific cases.

(e) No Right to Employment or Directorship . The grant of an Award shall not be construed as giving a Participant the right to be retained as an employee of the Company or any Affiliate, or a Director to be retained as a Director, nor will it affect in any way the right of the Company or an Affiliate to terminate a Participant’s employment at any time, with or without cause. In addition, the Company or an Affiliate may at any time dismiss a Participant from employment free from any liability or any claim under the Plan or any Award, unless otherwise expressly provided in the Plan or in any Award Agreement.

(f) Governing Law . The validity, construction and effect of the Plan or any Award, and any rules and regulations relating to the Plan or any Award, shall be determined in accordance with the laws of the State of Minnesota.

(g) Severability . If any provision of the Plan or any Award is or becomes or is deemed to be invalid, illegal or unenforceable in any jurisdiction or would disqualify the Plan or any Award under any law deemed applicable by the Committee, such provision shall be construed or deemed amended to conform to applicable laws, or if it cannot be so construed or deemed amended without, in the determination of the Committee, materially altering the purpose or intent of the Plan or the Award, such provision shall be stricken as to such jurisdiction or Award, and the remainder of the Plan or any such Award shall remain in full force and effect.

(h) No Trust or Fund Created . Neither the Plan nor any Award shall create or be construed to create a trust or separate fund of any kind or a fiduciary relationship between the Company or any Affiliate and a Participant or any other Person. To the extent that any Person acquires a right to receive payments from the Company or any Affiliate pursuant to an Award, such right shall be no greater than the right of any unsecured general creditor of the Company or any Affiliate.

(i) No Fractional Shares . No fractional Shares shall be issued or delivered pursuant to the Plan or any Award, and the Committee shall determine whether cash shall be paid in lieu of any fractional Share or whether such fractional Share or any rights thereto shall be canceled, terminated or otherwise eliminated.

(j) Headings . Headings are given to the Sections and subsections of the Plan solely as a convenience to facilitate reference. Such headings shall not be deemed in any way material or relevant to the construction or interpretation of the Plan or any provision thereof.

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Section 10. Clawback or Recoupment .

All Awards under this Plan shall be subject to forfeiture or other penalties under any clawback or recoupment policy of the Company in effect from time to time and such forfeiture or penalty provisions as determined by the Committee and set forth in the applicable Award Agreement.

Section 11. Effective Date of the Plan; Effect on Prior Plan .

The Plan shall be subject to approval by the stockholders of the Company at the annual meeting of shareholders of the Company to be held on April 14, 2014 and the Plan shall be effective as of the date of such shareholder approval. On and after the date of shareholder approval of the Plan, no awards shall be granted under the Company’s 1999 Stock Incentive Plan, but all outstanding awards previously granted under the 1999 Stock Incentive Plan shall remain outstanding in accordance with the terms thereof.

Section 12. Term of the Plan .

The Plan shall terminate at midnight on December 31, 2023 , unless terminated before then by the Board. Awards may be granted under the Plan until the earlier to occur of termination of the Plan or the date on which all Shares available for Awards under the Plan have been purchased or acquired; provided, however, that Incentive Stock Options may not be granted following the 10-year anniversary of the Board’s adoption of the Plan. As long as any Awards are outstanding under the Plan, the terms of the Plan shall govern such Awards.

Adopted by the Board of Directors on February 6, 2014, subject to and effective upon shareholder approval.

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