Company
COLUMBIA BANKING SYSTEM, INC.
COLB · CIK 0000887343
Acquisition (code A) of 2,577 shares at $0 per share.
Reporting Person GARDNER STEVEN R · Transaction Code A
Traded Sep 4, 2026 · Disclosed Sep 8, 2026
Source: SEC Form 4 · 0001267342-26-000003 · filed 2026-09-08 · View filing →
Acquisition (code A) of 2,670 shares at $0 per share.
Reporting Person LAGOMARSINO SIMONE · Transaction Code A
Traded Sep 2, 2026 · Disclosed Sep 4, 2026
Source: SEC Form 4 · 0001084960-26-000007 · filed 2026-09-04 · View filing →
Acquisition (code M) of 2,393 shares at $32.69 per share.
Reporting Person Giem Judi · Officer Title EVP CHRO · Transaction Code M
Traded Aug 14, 2026 · Disclosed Aug 18, 2026
Source: SEC Form 4 · 0000887343-26-000174 · filed 2026-08-18 · View filing →
Disposition (code F) of 643 shares at $32.69 per share.
Reporting Person Giem Judi · Officer Title EVP CHRO · Transaction Code F
Traded Aug 14, 2026 · Disclosed Aug 18, 2026
Source: SEC Form 4 · 0000887343-26-000174 · filed 2026-08-18 · View filing →
STOCK ACT PTR
$1,001 - $15,000
Sale.
Filer Josh Gottheimer · Chamber House · District NJ05 · Owner Joint · Transaction Type Sale · Asset Type Stock
Traded Mar 5, 2026 · Disclosed Apr 8, 2026FILED +34 DAYS
Source: House Clerk PTR · 20034305 · filed 2026-04-08 · View filing →