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.
Deer Aaron James reported acquisition or exercise transactions in this Form 4 filing.
Columbia Banking System, Inc. executive Aaron James Deer, EVP Chief Strategy/Innovation Officer, reported receiving a grant of 4,001 restricted stock units on February 18, 2026 at a reference price of $31.24 per unit. The award will vest 33.33% per year over three years, and his directly held restricted stock units total 8,700 after this grant.
BARUFFI KUMI YAMAMOTO reported acquisition or exercise transactions in this Form 4 filing.
Columbia Banking System executive receives stock-based compensation. EVP and General Counsel Kumi Yamamoto Baruffi was granted 8,322 restricted stock units at $31.24 per unit. The award vests 33.33% per year over three years, bringing her directly held RSU balance to 15,464 units after the grant.
COLUMBIA BANKING SYSTEM, INC. executive Drew K. Anderson, EVP Chief Admin Officer, reported an equity award of 8,002 restricted stock units on February 18, 2026. The filing values the grant at $31.24 per unit. After this award, Anderson holds 53,113 derivative securities in total.
The restricted stock units were granted on February 18, 2026 and will vest in installments of 33.33% per year over three years. This represents a compensation-related acquisition of stock-based incentives rather than an open-market share purchase or sale.
COLUMBIA BANKING SYSTEM, INC. Chair, President and CEO Clint Stein reported a tax-related share disposition under an equity award. On this Form 4, he transferred 3,922 shares of common stock at $31.49 per share to cover tax obligations. After this transaction, he directly holds 150,353 common shares.
Columbia Banking System executive reports tax-related share disposition
EVP and Chief Risk Officer Andrew H. Ognall reported a tax-withholding disposition of 931 shares of Columbia Banking System common stock at $31.49 per share. After this transaction, he directly held 74,006 shares, plus 2,635 shares held indirectly through a 401(k) plan.
COLUMBIA BANKING SYSTEM, INC. Senior Executive VP Torran B. Nixon reported a tax-withholding share disposition. On February 15, 2026, 1,905 shares of common stock were used to cover taxes at $31.49 per share, leaving 105,690 shares held directly. He also reports indirect holdings of 3,650 shares through a family trust and 1,869 shares in a 401(k).
COLUMBIA BANKING SYSTEM, INC. executive Frank Namdar, EVP Chief Credit Officer, reported a tax-withholding disposition of 1,169 shares of common stock at $31.49 per share. This transaction satisfied tax obligations rather than representing an open-market sale. Following the transaction, he directly held 32,278 shares and indirectly held 4,126 shares through a 401(k) plan.
Columbia Banking System executive reports tax-related share disposition. EVP and Chief Marketing Officer David Moore Devine reported a tax-withholding disposition of 485 shares of common stock at $31.49 per share. After this transaction, he directly owns 22,782 shares of Columbia Banking System common stock.
Senior Executive VP Christopher Merrywell of Columbia Banking System reported a tax-withholding disposition of common stock. On February 15, 2026, 1,706 shares of common stock were disposed of at $31.49 per share to cover tax obligations. After this transaction, Merrywell directly owned 44,257 common shares of the company.
COLUMBIA BANKING SYSTEM, INC. executive Aaron James Deer reported a tax-related share disposition. On February 15, 2026, he transferred 531 shares of common stock at $31.49 per share to cover tax obligations. After this tax-withholding disposition, he directly owned 41,843 common shares.