Columbia Banking System, Inc. (COLB) Insider Trading

Last 12 months

Insiders bought $22k and sold $647k on the open market.

20% of the selling was scheduled in advance under 10b5-1 plans. EVP Chief Marketing Officer Devine David Moore sold $115k on Jun 8, 17% of their stake, outside a plan.

Net open-market

−$625k

1 buy · 3 sales

Under a 10b5-1 plan

20%

of the value sold

Insiders who bought / sold

1 / 3

executives and directors

Last open-market buy

Jun 2026

Jun 30, 2026

Get an email when COLB's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Jun 30	Aaron James Deer EVP Chief Strategy/Innov Offcr	Bought	886	$25.37	$22k	2.1%	Form 4
Jun 8	Devine David Moore EVP Chief Marketing Officer	SoldNo plan 2 parts	3,872	$29.78 average	$115k	17%	Form 4
Mar 3 – 4	Torran B Nixon Senior Executive VP	Sold10b5-1 plan 2 parts	4,481	$28.55 average	$128k	4.1%	Form 4
Jan 30	Steven R Gardner Director	SoldNo plan	13,725	$29.43	$404k	2.3%	Form 4
Mar 4, 2025	Torran B Nixon Senior Executive VP	Sold10b5-1 plan	4,481	$25.99	$116k	3.9%	Form 4

Jun 30
Aaron James Deer
EVP Chief Strategy/Innov Offcr · bought 886 at $25.37
$22k
2.1% of stake
Jun 8No plan
Devine David Moore
EVP Chief Marketing Officer · sold 3,872 at avg $29.78
$115k
17% of stake
Mar 3 – 410b5-1 plan
Torran B Nixon
Senior Executive VP · sold 4,481 at avg $28.55
$128k
4.1% of stake
Jan 30No plan
Steven R Gardner
Director · sold 13,725 at $29.43
$404k
2.3% of stake
Mar 4, 202510b5-1 plan
Torran B Nixon
Senior Executive VP · sold 4,481 at $25.99
$116k
3.9% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch COLB, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in COLB's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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