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.
Columbia Banking System, Inc. filings document the disclosure record of a Washington bank holding company whose common stock trades on Nasdaq under COLB. Form 8-K reports cover earnings releases, Regulation FD investor presentations, dividend declarations, officer appointments, compensation arrangements and other material events involving Columbia Banking System and Columbia Bank.
Definitive proxy materials cover shareholder voting matters, board governance, executive compensation, equity awards and related corporate-governance disclosures. The company’s filing record also identifies its registered common stock, capital-structure disclosures, periodic financial reporting references and governance matters tied to its regional banking operations.
Columbia Banking System executive Kumi Yamamoto Baruffi reported a routine tax-related share disposition. On March 13, 2026, 937 shares of common stock were withheld by the issuer at a price of $26.23 per share to satisfy tax obligations tied to equity award vesting. After this withholding, Baruffi directly owned 53,715 shares of Columbia Banking System common stock. An earlier Form 4 had incorrectly labeled the transaction as an open-market sale; this amendment corrects the code to show it was a tax-withholding event rather than a discretionary sale.
Columbia Banking System executive Lakely Brock reported a routine tax-related share disposition. On March 13, shares of Common Stock were withheld by the issuer to satisfy tax obligations tied to an equity award vesting, totaling 211 shares at $26.23 per share. After this withholding, Brock directly holds 11,104 shares.
Columbia Banking System director Luis Machuca reported a compensation-related award of deferred compensation phantom stock. On this Form 4, Machuca acquired 659 units of Deferred Compensation Phantom Stock tied to Columbia Banking System common stock at a reference price of $26.83 per unit.
The units were credited under the company’s deferred compensation plan and are held as an indirect interest classified as deferred compensation. Following this award, Machuca’s deferred compensation phantom stock balance is 48,403 units. According to the plan terms, these amounts will be paid after his employment with the company ends.
Columbia Banking System Chair, CEO and President Clint Stein exercised 18,171 restricted stock units into common shares and had part of the shares withheld for taxes. The restricted stock units converted one-for-one into common stock, and the associated common stock transaction was valued at $26.23 per share.
Of the 18,171 common shares tied to this vesting, 7,151 shares were withheld to satisfy tax obligations, leaving a net increase of 11,020 shares in his direct holdings. After these compensation-related transactions, Stein directly holds 151,584 shares of Columbia Banking System common stock.
The restricted stock units come from a grant of 54,511 units awarded on February 25, 2025, which vests in three equal annual installments beginning on March 13, 2026. This filing reflects the first vesting installment and related tax withholding rather than an open-market purchase or sale.
EVP and Chief Risk Officer Andrew H. Ognall of Columbia Banking System converted 2,381 Restricted Stock Units into the same number of common shares on March 13, 2026. The common stock is shown at $26.23 per share in the filing.
To cover tax obligations, 951 common shares were withheld, leaving Ognall with a net increase of common stock while maintaining a direct holding of 74,132 shares after these transactions. He also holds 2,635 common shares indirectly through a 401(k) plan.
The RSUs come from a grant of 7,142 units awarded on February 25, 2025, scheduled to vest in three annual installments beginning March 13, 2026.
Columbia Banking System senior executive Torran B. Nixon reported routine equity compensation activity. On March 13, 2026, 5,013 Restricted Stock Units converted into the same number of common shares, reflecting the first vesting installment from a 15,037-unit grant made on February 25, 2025.
To cover tax obligations, 2,002 common shares were withheld at $26.23 per share, a non‑market, tax-withholding disposition rather than an open-market sale. Following this vesting, Nixon still holds 49,052 Restricted Stock Units, which are scheduled to vest in later installments, and also has indirect common stock holdings through a family trust and a 401(k) plan.
Columbia Banking System EVP and Chief Credit Officer Frank Namdar exercised restricted stock units into common shares. On March 13, 2026, 2,820 Restricted Stock Units converted into 2,820 shares of Common Stock, with the common stock valued at $26.23 per share in this transaction.
To cover tax obligations, 1,367 Common Stock shares were withheld, a non-market disposition that does not represent an open-market sale. After these transactions, Namdar directly held 31,923 Common Stock shares and indirectly held 4,179 shares through a 401(k) plan. The footnotes note that 8,458 Restricted Stock Units were originally granted on February 25, 2025, vesting in three annual installments beginning March 13, 2026.
COLUMBIA BANKING SYSTEM, INC. executive David Devine Moore, EVP Chief Marketing Officer, exercised Restricted Stock Units that converted into 940 shares of common stock on March 13, 2026. These RSUs were part of a 2,819-unit grant made on February 25, 2025 that vests in three annual installments beginning March 13, 2026.
Of the 940 common shares received, 376 shares were disposed of to cover tax liabilities through share withholding at a reference price of $26.23 per share. After these transactions, Moore directly holds 22,508 shares of common stock and 4,679 Restricted Stock Units.
Columbia Banking System Senior Executive VP Christopher Merrywell exercised 5,013 Restricted Stock Units into common stock on March 13, 2026. The units converted one-for-one into shares, valued at $26.23 per share for this transaction. To cover tax obligations, 1,973 shares were withheld, leaving him with 44,067 common shares directly owned after the transactions.
Columbia Banking System EVP and Chief Accounting Officer Lakely Brock exercised restricted stock units and sold a small portion of the resulting shares. On March 13, 2026, 846 Restricted Stock Units converted into 846 shares of common stock on a one-for-one basis. The common shares were acquired at $26.23 per share, then 211 shares were sold at $26.23 per share. After these transactions, Brock directly owned 11,104 shares of common stock. According to a prior grant dated February 25, 2025, 2,537 Restricted Stock Units vest in three annual installments beginning March 13, 2026.