Item 8.01 OTHER EVENTS

On January 16, 2019, GBCI and its wholly owned subsidiary, Glacier Bank, entered into a Plan and Agreement of Merger (the “ Merger Agreement ”) with FNB Bancorp (“ FNB ”) and its wholly owned subsidiary, The First National Bank of Layton (“ First National Bank ”). Under the terms of the Merger Agreement, FNB will merge with and into GBCI, with GBCI as the surviving entity (the “ Holding Company Merger ”). Immediately thereafter, First National Bank will merge with and into Glacier Bank, with Glacier Bank surviving as a wholly owned subsidiary of GBCI (the “ Bank Merger ”). Following the Bank Merger, the branches of First National Bank will operate as branches of Glacier Bank under a newly established Glacier Bank division.

Concurrently with the execution of the Merger Agreement, the directors and certain executive officers of FNB entered into voting agreements with GBCI pursuant to which each such director and executive officer, in his or her capacity as a shareholder, has agreed, among other things, to vote his or her shares of FNB common stock in favor of the proposed transactions contemplated by the Merger Agreement.

Subject to the terms and conditions of the Merger Agreement, at the date and time when the Holding Company Merger becomes effective, each share of FNB stock issued and outstanding will be converted into and represent the right to receive from GBCI the per-share stock consideration, which is 0.6474 shares of GBCI common stock for each share of FNB common stock. Subject to collar provisions, it is estimated that the transaction would result in the issuance of approximately 2,046,411 shares of GBCI common stock with an aggregate value of $85.0 million (based on the closing price of $41.55 for GBCI common stock on January 15, 2019), and subject to certain adjustments based on the price of GBCI common stock for a specified period before closing.

Consummation of the transaction is subject to required regulatory approvals, FNB shareholder approval, and other customary conditions of closing. The transaction is presently expected to close in the second quarter of 2019. For information regarding the terms of the proposed transaction, reference is made to the press release dated January 16, 2019, which is attached as Exhibit 99.1.

Forward-Looking Statements

This current report on Form 8-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements can be identified by words such as “estimate,” “expect,” “will,” and similar references to future periods. Such forward-looking statements include but are not limited to statements about the benefits of the business combination transaction involving GBCI and FNB, including future financial and operating results, the combined company’s plans, objectives, expectations and intentions, and other statements that are not historical facts. These forward-looking statements are subject to risks and uncertainties, many of which are outside of our control, that may cause actual results or events to differ materially from those projected, including but not limited to the following: risks that the merger transaction will not close when expected or at all because required regulatory, shareholder or other approvals or conditions to closing are not received or satisfied on a timely basis or at all; risks that the benefits from the transaction may not be fully realized or may take longer to realize than expected, including as a result of changes in general economic and market conditions, interest and exchange rates, monetary policy, laws and regulations and their enforcement, and the degree of competition in the geographic and business areas in which GBCI and FNB operate; uncertainties regarding the ability of the companies to promptly and effectively integrate their businesses; uncertainties regarding the reaction to the transaction of the companies’ respective customers, employees, and counterparties; and risks relating to the diversion of management time on merger-related issues. Readers are cautioned not to place undue reliance on the forward-looking statements, which speak only as of the date on which they are made and reflect management’s current estimates, projections, expectations and beliefs. GBCI undertakes no obligation to publicly revise or update the forward-looking statements to reflect events or circumstances that arise after the date of this report. For more information, see the risk factors described in GBCI’s Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and other filings with the SEC.

Additional Information and Where to Find It

This report is being filed in respect of the proposed merger transaction involving GBCI and FNB. This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities.

In connection with the proposed merger transactions, GBCI will file with the Securities and Exchange Commission (“ SEC ”) a Registration Statement on Form S-4 (the “ Registration Statement ”) that will include a Proxy Statement of FNB and a Prospectus of GBCI, as well as other relevant documents concerning the proposed transaction. Shareholders of FNB are urged to read carefully the Registration Statement and the Proxy Statement/Prospectus included therein regarding the proposed merger transactions when it becomes available and any other relevant documents filed with the SEC, as well as any amendments or supplements to those documents because they will contain important information. A free copy of the Proxy Statement/Prospectus included in the Registration Statement, as well as other filings containing information about GBCI, may be obtained at the SEC’s Internet site (http://www.sec.gov). You will also be able to obtain these documents, free of charge, from GBCI at www.glacierbancorp.com under the tab “SEC Filings” or by requesting them in writing or by telephone from GBCI at: Glacier Bancorp, Inc., 49 Commons Loop, Kalispell, Montana 59901, ATTN: Corporate Secretary; Telephone (406) 751-7706.

GBCI and FNB and certain of their directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of FNB in connection with the proposed merger transactions. Information about the directors and executive officers of GBCI is set forth in the proxy statement for GBCI’s 2018 annual meeting of shareholders, as filed with the SEC on Schedule 14A on March 15, 2018. Additional information regarding the interests of those participants and other persons who may be deemed participants may be obtained by reading the Proxy Statement/Prospectus included in the Registration Statement and other relevant documents regarding the proposed merger transactions filed with the SEC when they become available. Copies of these documents may be obtained free of charge from the sources described above.