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.
COLUMBIA BANKING SYSTEM EVP and General Counsel Kumi Yamamoto Baruffi exercised restricted stock units and sold a portion of the resulting shares. On March 13, 2026, 2,381 Restricted Stock Units were converted into 2,381 shares of common stock at an effective price of $0.00 per share. On the same date, 937 common shares were sold at $26.23 per share, leaving 53,715 common shares held directly after the sale. A prior grant of 7,142 Restricted Stock Units made on February 25, 2025 vests in three annual installments beginning March 13, 2026.
COLUMBIA BANKING SYSTEM, INC. executive Drew K. Anderson, EVP Chief Admin Officer, exercised 2,506 Restricted Stock Units into the same number of common shares on March 13, 2026. The RSUs convert to common stock on a one-for-one basis.
To cover tax obligations, 1,215 common shares were withheld at $26.23 per share, a non-market disposition rather than an open-market sale. After these transactions, Anderson directly holds 21,969 common shares. A prior grant of 7,518 RSUs vests in three annual installments beginning on March 13, 2026.
Columbia Banking System EVP Aaron James Deer exercised restricted stock units into common shares as part of his compensation. On March 13, 2026 he converted 1,567 restricted stock units into common stock, with 617 common shares withheld at $26.23 per share to cover tax obligations, rather than sold in the market.
Following these transactions, he directly owns 41,875 common shares and 7,133 restricted stock units. The RSUs convert into common stock on a one-for-one basis. They stem from a 4,699-unit grant made on February 25, 2025, vesting in three annual installments beginning March 13, 2026.
COLUMBIA BANKING SYSTEM, INC. Senior Executive VP Nixon Torran B reported open-market sales of common stock. On 2026-03-04, he sold 2,240 shares at an average price of $28.85, and on 2026-03-03 he sold 2,241 shares at $28.25.
After these transactions, he held 98,229 shares directly. Indirect holdings included 3,650 shares by a family trust and 1,876 shares by a 401(k) as of 2026-03-03. An open-market sale was made pursuant to a Rule 10b5-1 trading plan established on 2025-11-25.