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.
Digging through a 300-page bank filing to discover what really happened to net interest margin can feel impossible. Columbia Bank’s disclosures are thick with credit-quality tables, capital-ratio footnotes, and merger updates—details investors can’t afford to miss.
Stock Titan’s AI-powered analysis turns that complexity into clarity. Need the Columbia Bank quarterly earnings report 10-Q filing? We publish it the moment EDGAR does, then deliver a plain-English summary of loan growth, deposit flows, and margin trends. Wondering about Columbia Bank insider trading Form 4 transactions? Real-time alerts surface every executive buy or sell, so you can act before the market digests the news.
Our coverage spans every form you’ll ever search for:
- 10-K Annual Report – credit exposure and regional loan mix, with our AI labeling the sections that matter most for risk analysis. Look for the phrase “Columbia Bank annual report 10-K simplified”.
- 8-K Material Events – branch closures, capital raises, or merger milestones, all under “Columbia Bank 8-K material events explained”.
- DEF 14A Proxy – see “Columbia Bank proxy statement executive compensation” to compare pay versus peer banks.
- Form 4 – drill into “Columbia Bank Form 4 insider transactions real-time” and spot buying patterns.
Whether you’re studying allowance for credit losses, tracking deposit betas, or simply asking “understanding Columbia Bank SEC documents with AI,” our platform answers in seconds. Save hours of manual reading and make decisions with confidence using Stock Titan’s comprehensive, AI-enhanced filing analysis.
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 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. 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.
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