Columbia Banking System, INC Form 4 insider transactions

Aaron James Deer of Columbia Banking System, Inc. reported a transaction involving the acquisition of 886 shares of common stock.

Director Luis Machuca acquired 563 shares of phantom stock in Columbia Banking System, Inc. via the company's deferred compensation plan.

Columbia Banking System, Inc. executive Devine David Moore reports transactions involving company common stock.

Director Anddria Varnado acquired 3,949 shares of Columbia Banking System, Inc. common stock on May 14, 2026.

Director Hilliard C. Terry III acquired 3,949 shares of Columbia Banking System, Inc. common stock on May 14, 2026.

Director Jaynie M. Studenmund acquired 3,949 shares of Columbia Banking System, Inc. common stock on May 14, 2026.

Director Elizabeth Whitehead Seaton acquired 3,949 shares of Columbia Banking System, Inc. common stock.

Director John F. Schultz acquired 3,949 shares of Columbia Banking System, Inc. common stock while correcting a prior reporting error.

Director M. Christian Mitchell acquired 3,949 shares of Columbia Banking System, Inc. common stock on May 14, 2026.

Director Luis Machuca acquired 3,949 shares of Columbia Banking System, Inc. common stock on May 14, 2026.

Director Randal Lee Lund acquired 3,949 shares of Columbia Banking System, Inc. common stock on May 14, 2026.

Eric Forrest, a Director at Columbia Banking System, Inc., reported the acquisition of 3,949 shares of common stock on May 14, 2026.

Mark A. Finkelstein, a Director at Columbia Banking System, Inc., acquired 3,949 shares of common stock on May 14, 2026.

EVP and Chief Accounting Officer Brock Lakely disposed of 396 shares of Columbia Banking System common stock to cover tax obligations.

Columbia Banking System executive Kumi Yamamoto Baruffi filed an amended Form 4 to correct a transaction code related to shares withheld for tax obligations.

Columbia Banking System's EVP, Chief Accounting Officer, Lakely Brock, amended a Form 4 filing to correct a transaction code related to tax withholding on equity award vesting.

Columbia Banking System Director Luis Machuca acquired 659 units of deferred compensation phantom stock, valued at $26.83 per unit.

Columbia Banking System CEO Clint Stein exercised Restricted Stock Units and subsequently sold a portion of the shares to cover tax obligations.

Columbia Banking System's EVP Chief Risk Officer, Andrew H. Ognall, converted Restricted Stock Units into common stock and sold shares for tax purposes.

Columbia Banking System Senior Executive VP Torran B. Nixon reported the acquisition of common stock from Restricted Stock Unit vesting and a subsequent disposition for tax purposes.

Columbia Banking System EVP Frank Namdar reported the conversion of restricted stock units into common stock and subsequent tax-related sales.

Columbia Banking System EVP Chief Marketing Officer Devine David Moore reported the vesting and conversion of restricted stock units into common stock, alongside a related tax-driven sale.

Columbia Banking System Senior Executive VP Christopher Merrywell converted restricted stock units into common stock and sold shares to cover tax obligations.

Columbia Banking System's EVP, Chief Accounting Officer, Lakely Brock, exercised restricted stock units and sold a portion of the resulting common stock.

Aaron James Deer, EVP Chief Strategy/Innovation Officer at Columbia Banking System, converted Restricted Stock Units into common stock and adjusted his beneficial ownership.

Columbia Banking System's EVP General Counsel, Kumi Yamamoto Baruffi, reported the conversion of restricted stock units and a subsequent sale of common stock.

Columbia Banking System EVP Drew K. Anderson reported the conversion of restricted stock units and subsequent tax-related share disposition.

Columbia Banking System's Senior Executive VP, Torran B. Nixon, sold a total of 4,481 shares of common stock in early March 2026 under a pre-arranged 10b5-1 trading plan.

Columbia Banking System CEO Clint Stein disposed of 9,789 common shares at $28.45 each, primarily to cover tax liabilities.

Columbia Banking System's EVP Chief Risk Officer, Andrew H. Ognall, disposed of 1,304 shares of common stock to cover tax withholding obligations.