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COLUMBIA BANKING SYSTEM, INC.
COLBCIK: 0000887343
COLUMBIA BANKING SYSTEM, INC. (COLB) has recorded 50 insider filings from 12 unique insiders, totaling $8.0M in trading activity (net selling). Insiders have sold $562.0K while purchasing $0. Insider sales can reflect personal financial planning rather than a bearish view — always consider the full context. The most active insider by volume is Stein Clint. All data sourced from SEC Form 4 filings and updated as new disclosures are filed.
Total Volume
$8.0M
Purchases
$0
Sales
$562.0K
Unique Insiders
12
Recent Insider Trades (50)
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Filed Mar 20, 2026
Other
$0
Sell
$5.5K
1 sale
Other
$0
Other
$0
Other
$0
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Filed Mar 17, 2026
Sell
$24.6K
1 sale
Other
$0
Other
$0
Other
$0
Sell
$127.9K
2 sales
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Filed Mar 2, 2026
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Filed Feb 18, 2026
Other
$0
Grant
$138.6K
1 grant
Grant
$1.5M
2 grants
Grant
$133.9K
1 grant
Grant
$411.0K
1 grant
Grant
$77.8K
1 grant
Grant
$93.4K
1 grant
Grant
$373.4K
1 grant
BARUFFI KUMI YAMAMOTOEVP General Counsel, Corp Sec
Filed Feb 4, 2026
Grant
$151.2K
1 grant
Grant
$62.2K
1 grant
Sell
$403.9K
1 sale
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0
Other
$0