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Home/Companies/Columbia Banking System, Inc.

Columbia Banking System, Inc.

348 insider trades tracked

COLB
Insider trades
348
Bought (open market)
$1.1M
Sold (open market)
$794K
Acquired (grants)
$28.1M
Unique insiders
33

12-month activity

Monthly insider buy vs sell totals for Columbia Banking System, Inc..

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$01
December 2025$0$02
January 2026$0$404K21
February 2026$0$042
March 2026$0$158K33
April 2026$0$01
May 2026$0$010
June 2026$22K$115K4
July 2026$0$00
August 2026$0$02
September 2026$0$01

Recent insider trades

Most recent Form 4 filings for Columbia Banking System, Inc..

  • LAGOMARSINO SIMONEgranted2,670 shares ofCOLBat $0Sep 2 · filed Sep 4Details
  • Giem Juditax-withheld643 shares ofCOLBat $32.69$21KAug 14 · filed Aug 18Details
  • Giem Judiexercised2,393 shares ofCOLBat $32.69$78KAug 14 · filed Aug 18

Insiders at this company

Executives and directors who have filed Form 4s.

  • Stein Clint33 trades
  • Deer Aaron James27 trades
  • Moore Devine David27 trades
  • Merrywell Christopher26 trades
  • Nixon Torran B25 trades
  • OGNALL ANDREW H23 trades
  • Namdar Frank23 trades
  • BARUFFI KUMI YAMAMOTO22 trades

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
Details
  • Deer Aaron Jamesbought886 shares ofCOLBat $25.37$22KJun 30 · filed Jul 2Details
  • MACHUCA LUISgranted563 shares ofCOLBat $31.78$18KJun 15 · filed Jun 16Details
  • Moore Devine Davidsold3,812 shares ofCOLBat $29.775$114KJun 8 · filed Jun 10Details
  • Moore Devine Davidsold60 shares ofCOLBat $29.77$2KJun 8 · filed Jun 10Details
  • Varnado Anddriagranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • Lund Randal Leegranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • Forrest Ericgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • SEATON ELIZABETH WHITEHEADgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • SCHULTZ JOHN Fgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • Finkelstein Mark Agranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • Terry Hilliard C. IIIgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • MITCHELL M CHRISTIANgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • STUDENMUND JAYNIE Mgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • MACHUCA LUISgranted3,949 shares ofCOLBat $0May 14 · filed May 18Details
  • Lakely Brocktax-withheld396 shares ofCOLBat $29.1$12KApr 15 · filed Apr 16Details
  • MACHUCA LUISgranted659 shares ofCOLBat $26.83$18KMar 16 · filed Mar 17Details
  • Anderson Drew Ktax-withheld1,215 shares ofCOLBat $26.23$32KMar 13 · filed Mar 17Details
  • Anderson Drew Kexercised2,506 shares ofCOLBat $26.23$66KMar 13 · filed Mar 17Details
  • Deer Aaron Jamestax-withheld617 shares ofCOLBat $26.23$16KMar 13 · filed Mar 17Details
  • Deer Aaron Jamesexercised1,567 shares ofCOLBat $26.23$41KMar 13 · filed Mar 17Details
  • Moore Devine Davidtax-withheld376 shares ofCOLBat $26.23$10KMar 13 · filed Mar 17Details
  • Moore Devine Davidexercised940 shares ofCOLBat $26.23$25KMar 13 · filed Mar 17Details
  • Merrywell Christophertax-withheld1,973 shares ofCOLBat $26.23$52KMar 13 · filed Mar 17Details
  • Merrywell Christopherexercised5,013 shares ofCOLBat $26.23$131KMar 13 · filed Mar 17Details
  • Namdar Franktax-withheld1,367 shares ofCOLBat $26.23$36KMar 13 · filed Mar 17Details
  • Namdar Frankexercised2,820 shares ofCOLBat $26.23$74KMar 13 · filed Mar 17Details
  • Lakely Brocksold211 shares ofCOLBat $26.23$6KMar 13 · filed Mar 17Details
  • View all trades for COLB →
    Anderson Drew K
    21 trades
  • Dow Lisa16 trades
  • O'HAVER CORT L14 trades
  • FARNSWORTH RON L13 trades
  • White Lisa M10 trades
  • MACHUCA LUIS10 trades
  • Burns Sheri7 trades
  • Lakely Brock5 trades
  • EERKES CRAIG D5 trades
  • Giem Judi5 trades
  • STUDENMUND JAYNIE M4 trades
  • SCHULTZ JOHN F3 trades