COLB
insider transactionsCOLUMBIA BANKING SYSTEM, INC. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-3.9K
0 buy · 3.9K sell
Net value · 90d
-$115.3K
$0 in · $115.3K out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
2
0 buy · 3.9K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Grant·A
Director
$17.9K
563 sh · $31.78
Own +1%
-
Sell·S
EVP Chief Marketing Officer
$113.5K
3.8K sh · $29.78
Own -17%
-
Sell·S
EVP Chief Marketing Officer
$1.8K
60 sh · $29.77
Own -0%
-
Grant·A
Director
$0
3.9K sh
Own +17%
-
Grant·A
Director
$0
3.9K sh
Own +12%
-
Grant·A
Director
$0
3.9K sh
Own New
-
Grant·A
Director
$0
3.9K sh
Own +12%
-
Grant·A
Director
$0
3.9K sh
Own +8%
-
Grant·A
Director
$0
3.9K sh
Own +10%
-
Grant·A
Director
$0
3.9K sh
Own +22%
-
Grant·A
Director
$0
3.9K sh
Own +15%
-
Grant·A
Director
$0
3.9K sh
Own +15%
-
Grant·A
Director
$0
3.9K sh
Own +9%
-
Other·F
EVP, Chief Accounting Officer
$11.5K
396 sh · $29.10
Own -4%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 15, 2026 | Luis Machuca | Grant A | 563 | $17.9K |
| Jun 8, 2026 | Devine David Moore | Sell S | 3.8K | $113.5K |
| Jun 8, 2026 | Devine David Moore | Sell S | 60 | $1.8K |
| May 14, 2026 | Randal Lee Lund | Grant A | 3.9K | $0 |
| May 14, 2026 | Eric Forrest | Grant A | 3.9K | $0 |
| May 14, 2026 | Elizabeth Whitehead Seaton | Grant A | 3.9K | $0 |
| May 14, 2026 | Mark A Finkelstein | Grant A | 3.9K | $0 |
| May 14, 2026 | Hilliard C. Terry III | Grant A | 3.9K | $0 |
| May 14, 2026 | Christian M Mitchell | Grant A | 3.9K | $0 |
| May 14, 2026 | Jaynie M Studenmund | Grant A | 3.9K | $0 |
| May 14, 2026 | Luis Machuca | Grant A | 3.9K | $0 |
| May 14, 2026 | Anddria Varnado | Grant A | 3.9K | $0 |
| May 14, 2026 | John F Schultz | Grant A | 3.9K | $0 |
| Apr 15, 2026 | Brock Lakely | Other F | 396 | $11.5K |
About COLB insider trading
This page tracks insider transactions for COLUMBIA BANKING SYSTEM, INC. (COLB) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.