Welcome to our dedicated page for Columbia Bank SEC filings (Ticker: COLB), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Columbia Banking System, Inc. (COLB) SEC filings page on Stock Titan provides direct access to the company’s regulatory disclosures as filed with the U.S. Securities and Exchange Commission. Columbia is a Washington‑incorporated bank holding company whose common stock trades on The Nasdaq Stock Market LLC under the symbol COLB, and its filings offer detailed insight into the operations of Columbia Bank and related subsidiaries.
Investors can use this page to locate current reports on Form 8‑K, which Columbia files to report material events. Recent 8‑Ks describe items such as quarterly and annual earnings releases, authorization of cash dividends, approval of a common stock repurchase program, completion of the all‑stock acquisition of Pacific Premier Bancorp, Inc., and regulatory approvals for that transaction. Other 8‑Ks document leadership and governance changes, including the appointment of executive officers like the Chief Financial Officer and Chief Accounting Officer, transitions of existing executives into advisory roles, and the addition of former Pacific Premier directors to Columbia’s Board of Directors and its committees.
Filings related to the Pacific Premier acquisition, including the initial Form 8‑K and subsequent Form 8‑K/A amendments, provide detail on the merger structure, exchange ratio, treatment of equity awards, and pro forma financial information for the combined company. Additional 8‑K items reference joint press releases, consulting agreements, and regulatory approvals from banking authorities that were required to complete the transaction.
On Stock Titan, these SEC filings are supplemented with AI‑powered summaries designed to highlight the key points of each document, such as the nature of a reported event, its potential impact on Columbia’s capital, governance or operations, and any notable terms in attached exhibits. Users can quickly scan high‑level explanations of earnings‑related 8‑Ks, dividend and buyback announcements, merger disclosures, and executive compensation or transition agreements, while retaining the ability to review the full text of each filing for comprehensive analysis.
Columbia Banking System insider acquisition tied to Pacific Premier merger The reporting person, a company director, received 245,875 shares of Columbia common stock directly and 338,221 shares indirectly through the Gardner Family Trust as part of Columbia's acquisition of Pacific Premier Bancorp. Under the merger terms each Pacific Premier share was converted into 0.9150 Columbia shares, with fractional shares paid in cash. The filing discloses the share conversion and the closing prices on August 29: Columbia at $26.77 and Pacific Premier at $24.49.
Jaynie M. Studenmund, a director of Columbia Banking System, Inc. (COLB), reported acquisition of Columbia common stock related to Columbia's acquisition of Pacific Premier Bancorp, Inc. Pursuant to the merger, each Pacific Premier share held by the reporting person converted into the right to receive 0.9150 shares of Columbia common stock, with fractional shares paid in cash. The reporter acquired 15,653 shares directly and 3,843 shares indirectly (via a Morgan Stanley IRA) on 08/31/2025, and an additional 2,205 restricted shares were acquired on 09/02/2025 that vest in full on 05/15/2026. The form notes closing prices on 08/29/2025: Columbia $26.77 and Pacific Premier $24.49.
Mitchell M. Christian, a director of Columbia Banking System, Inc. (COLB), reported acquisitions totaling 37,960 shares of Columbia common stock. On 08/31/2025 he received 35,755 shares as part of Columbia's acquisition of Pacific Premier Bancorp, Inc., where each Pacific Premier share converted into 0.9150 Columbia shares; fractional shares were paid in cash. The filing shows closing prices on 08/29/2025 of Columbia at $26.77 and Pacific Premier at $24.49. Separately, on 09/02/2025 he was granted 2,205 restricted shares that vest on 05/15/2026. All reported holdings are direct beneficial ownership and the transactions are coded as acquisitions with a reported price of $0, reflecting conversion/award mechanics.
Columbia Banking System, Inc. (COLB) filed an Initial Statement on Form 3 for reporting person Jaynie M. Studenmund, indicating her relationship to the issuer as a Director. The filing states no securities are beneficially owned by the reporting person. The form was executed by an attorney-in-fact on 09/03/2025 and records the triggering event date as 08/31/2025.
Columbia Banking System, Inc. (COLB) received an initial Form 3 disclosing that Mitchell M. Christian is reported as a Director and the filing shows no securities beneficially owned by the reporting person. The Form lists the triggering event date as 08/31/2025 and includes an attorney-in-fact signature on the form. This indicates the director currently holds no direct or indirect equity stake disclosed on the Form 3.
Columbia Banking System, Inc. director Steven R. Gardner filed an initial ownership report stating that he does not beneficially own any shares or derivative securities of the company as of the reported date. This Form 3 establishes his insider status while confirming that he currently holds no reportable equity position in Columbia Banking System, Inc.
Columbia Banking System filed an amendment to its prior current report to supply the missing financial statements and pro forma financial information for Pacific Premier required by Item 9.01. The amendment states the Pacific Premier financial statements are attached as Exhibit 99.1 and the pro forma combined financials are attached as Exhibit 99.2, and that these exhibits are incorporated by reference into Item 9.01. Aside from adding these exhibits, the amendment affirms that all other information in the original report remains unchanged.
Columbia Banking System, Inc. filed a Form S-8 to register 1,281,132 shares of its common stock for equity awards assumed in its acquisition of Pacific Premier Bancorp, Inc. The awards originally granted under the Pacific Premier Bancorp, Inc. Amended and Restated 2022 Long-Term Incentive Plan and the Heritage Oaks Bancorp, Inc. 2015 Equity Based Compensation Plan were converted at closing into Columbia awards using the agreed 0.9150 exchange ratio and generally keep their original terms and conditions. These registered shares may be issued as the assumed awards vest, settle or are exercised following the completion of the multi-step merger in which Pacific Premier and its bank subsidiary were combined into Columbia and Columbia Bank.
Columbia Banking System, Inc. completed its previously announced all-stock acquisition of Pacific Premier. The transaction structure included an initial merger of Merger Sub into Pacific Premier (the Merger), a subsequent second-step merger resulting in Columbia as the surviving parent (the Second Step Merger), and a bank-level combination where Pacific Premier Bank merged into Columbia Bank, with Columbia Bank surviving (the Bank Merger). Equity awards were handled per the merger agreement: certain outstanding restricted stock awards were converted into either merger consideration or into Columbia restricted stock awards based on the Exchange Ratio; performance-based restricted stock units were assumed and converted into Columbia RSU Awards on a target-performance basis; outstanding options were cancelled and option holders received a cash payment per the agreement. A registration statement on Form S-4 (File No. 333-287607) was declared effective on June 16, 2025. The filing references a Consulting Agreement and a joint press release dated September 2, 2025.
Columbia Banking System, Inc. filed a report stating it will host a quarterly earnings conference call on October 30, 2025 at 2:00 p.m. PT (5:00 p.m. ET). During the call, management plans to discuss the company’s third quarter 2025 financial results and provide an update on recent activities. The company issued a press release with access details for the call, which is included as an exhibit to the report.
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