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sellWeak cluster of 310b5-1 plan

Torran B Nixon sold $128k of COLB

Senior Executive VP at COLUMBIA BANKING SYSTEM, INC.. 4,481 shares at an average of $28.55, traded Mar 3, 2026, filed Mar 5, 2026.

Warning score
21
Value
$128k
4,481 shares
Holdings after
98,229
-4% from before
From 52-week low
+46%
low $19.15, close $27.98
From 52-week high
-10%
high $31.25, as of Mar 3, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $128k at market
    +11
  • Share of holdings sold
    Sold 4.4% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m -1.0%, 3m +6.7%, 6m +11.5%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

COLBOct 12, 2026 · close 28.51
Since filing Mar 5, 2026: +4.4%SPY +15.1% · excess -10.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000887343-26-000103, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 3, 2026SOpen-market sale
Common Stock10b5-1
-2,241$28.25$63k100,469Mar 5, 2026
Mar 4, 2026SOpen-market sale
Common Stock10b5-1
-2,240$28.85$65k98,229Mar 5, 2026

Related signals

Other insiders at COLUMBIA BANKING SYSTEM, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
15Weak
COLBbuy
COLUMBIA BANKING SYSTEM, INC.
Aaron James Deer
EVP Chief Strategy/Innov Offcr
$22k
886 shares
+2%
30Weak
COLBsell
COLUMBIA BANKING SYSTEM, INC.
Devine David Moore
EVP Chief Marketing Officer
$115k
3,872 shares
-17%
15Weak
COLBsell 3
COLUMBIA BANKING SYSTEM, INC.
Kumi Yamamoto Baruffi
EVP General Counsel, Corp Sec
$25k
937 shares
-2%
15Weak
COLBsell 3
COLUMBIA BANKING SYSTEM, INC.
Brock Lakely
EVP, Chief Accounting Officer
$5,535
211 shares
-2%
51Moderate
COLBsell
COLUMBIA BANKING SYSTEM, INC.
Steven R Gardner
director
$404k
13,725 shares
-100%
5Weak
COLBsell10b5-1
COLUMBIA BANKING SYSTEM, INC.
Torran B Nixon
Senior Executive VP
$116k
4,481 shares
-4%
58Moderate
COLBbuy 13
COLUMBIA BANKING SYSTEM, INC.
Elizabeth Whitehead Seaton
director
$50k
2,685 shares
+12%
41Moderate
COLBbuy 13
COLUMBIA BANKING SYSTEM, INC.
Randal Lee Lund
director
$19k
1,000 shares
+6%
46Moderate
COLBbuy 13
COLUMBIA BANKING SYSTEM, INC.
Torran B Nixon
Senior Executive VP
$75k
3,650 shares
+3%
47Moderate
COLBbuy 13
COLUMBIA BANKING SYSTEM, INC.
Aaron James Deer
Chief Strategy/Innovation Offc
$39k
2,000 shares
+6%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Torran B Nixon sold $128k of COLB | InsiderTell