Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 31 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 13, 2026 COLB M 2,820 $26.23 $73,969 33,290 Direct +9.26% Acquired 10.1% (price as of 2026-10-06)
March 13, 2026 COLB F 1,367 $26.23 $35,856 31,923 Direct -4.11% Disposed 10.1% (price as of 2026-10-06)
March 13, 2026 COLB M 2,820 · · 13,640 Direct -17.13% Disposed (price as of 2026-10-06)
March 1, 2026 COLB F 1,808 $28.45 $51,438 30,470 Direct -5.60% Disposed 1.5% (price as of 2026-10-06)
Feb. 18, 2026 COLB A 8,002 $31.24 $249,982 16,460 Direct +94.61% Acquired -7.5% (price as of 2026-10-06)
Feb. 15, 2026 COLB F 1,169 $31.49 $36,812 32,278 Direct -3.50% Disposed -8.3% (price as of 2026-10-06)
Feb. 2, 2026 COLB A 4,667 $29.69 $138,563 35,830 Direct +14.98% Acquired -2.7% (price as of 2026-10-06)
Feb. 2, 2026 COLB F 2,383 $29.69 $70,751 33,447 Direct -6.65% Disposed -2.7% (price as of 2026-10-06)
Jan. 20, 2026 COLB F 1,652 $28.35 $46,834 31,163 Direct -5.03% Disposed 1.9% (price as of 2026-10-06)
Jan. 20, 2026 COLB D 579 · · 32,815 Direct -1.73% Disposed (price as of 2026-10-06)
Feb. 28, 2025 COLB F 1,873 $26.73 $50,065 33,394 Direct -5.31% Disposed 8.1% (price as of 2026-10-06)
Feb. 28, 2025 COLB F 902 $26.73 $24,110 35,267 Direct -2.49% Disposed 8.1% (price as of 2026-10-06)
Feb. 25, 2025 COLB A 4,229 $26.60 $112,491 19,648 Direct +27.43% Acquired 8.6% (price as of 2026-10-06)
Feb. 25, 2025 COLB A 4,229 $26.60 $112,491 15,419 Direct +37.79% Acquired 8.6% (price as of 2026-10-06)
Feb. 25, 2025 COLB A 8,458 $26.60 $224,983 8,458 Direct · Acquired 8.6% (price as of 2026-10-06)
Feb. 14, 2025 COLB F 1,311 $27.41 $35,935 36,169 Direct -3.50% Disposed 5.4% (price as of 2026-10-06)
April 16, 2024 COLB I 1 · · 2,920 Indirect -0.03% Disposed (price as of 2026-10-06)
March 11, 2024 COLB A 53 $19.43 $1,030 2,921 Indirect +1.85% Acquired 48.7% (price as of 2026-10-06)
March 8, 2024 COLB F 466 $19.51 $9,092 37,480 Direct -1.23% Disposed 48.1% (price as of 2026-10-06)
March 8, 2024 COLB F 808 $19.51 $15,764 37,946 Direct -2.08% Disposed 48.1% (price as of 2026-10-06)
March 1, 2024 COLB A 5,595 $17.87 $99,983 11,190 Direct +100.00% Acquired 61.7% (price as of 2026-10-06)
March 1, 2024 COLB A 5,595 $17.87 $99,983 5,595 Direct · Acquired 61.7% (price as of 2026-10-06)
March 1, 2024 COLB A 11,191 $17.87 $199,983 38,754 Direct +40.60% Acquired 61.7% (price as of 2026-10-06)
Feb. 28, 2024 COLB F 992 $17.76 $17,618 27,563 Direct -3.47% Disposed 62.7% (price as of 2026-10-06)
Feb. 15, 2024 COLB F 1,311 $19.01 $24,922 28,555 Direct -4.39% Disposed 52.0% (price as of 2026-10-06)
Jan. 1, 2024 COLB F 784 $26.68 $20,917 34,852 Direct -2.20% Disposed 8.3% (price as of 2026-10-06)
March 8, 2023 COLB F 466 $27.36 $12,750 34,195 Direct -1.34% Disposed 5.6% (price as of 2026-10-06)
March 2, 2023 COLB F 523 $29.07 $15,204 34,661 Direct -1.49% Disposed -0.6% (price as of 2026-10-06)
March 2, 2023 COLB F 859 $29.07 $24,971 35,184 Direct -2.38% Disposed -0.6% (price as of 2026-10-06)
March 2, 2023 COLB F 769 $29.07 $22,355 36,043 Direct -2.09% Disposed -0.6% (price as of 2026-10-06)
March 2, 2023 COLB A 1,623 · · 36,812 Direct +4.61% Acquired (price as of 2026-10-06)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
March 13, 2026 COLB Restricted Stock Unit Common Stock (2,820) · · 2,820 Disposed
Feb. 18, 2026 COLB Restricted Stock Unit Common Stock (8,002) · · 8,002 Acquired
Feb. 25, 2025 COLB Performance Restricted Stock Unit Common Stock (4,229) · · 4,229 Acquired
Feb. 25, 2025 COLB Performance Restricted Stock Unit Common Stock (4,229) · · 4,229 Acquired
Feb. 25, 2025 COLB Restricted Stock Unit Common Stock (8,458) · · 8,458 Acquired
April 16, 2024 COLB Deferred Compensation Phantom Stock Common · · 1 Disposed
March 11, 2024 COLB Deferred Compensation Phantom Stock Common (53) · · 53 Acquired
March 1, 2024 COLB Performance Restricted Stock Unit Common Stock (5,595) · · 5,595 Acquired
March 1, 2024 COLB Performance Restricted Stock Unit Common Stock (5,595) · · 5,595 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 2 holdings

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
May 23, 2023 COLB Common Stock · Direct
March 6, 2023 COLB Common Stock 35,189 Direct