COLB Insider Buying — Recent SEC Form 4 Activity
Track insider buying activity for COLUMBIA BANKING SYSTEM, INC. ($COLB). See every SEC Form 4 purchase by CEOs, CFOs, directors, and 10% owners over the last 90 days — sourced directly from EDGAR.
In the past 90 days, 1 insider at COLUMBIA BANKING SYSTEM, INC. (COLB) made open-market purchases totaling $22,477.82. The most recent transaction was on 2026-07-02.
Recent Insider Purchases at COLUMBIA BANKING SYSTEM, INC.
| Date | Insider | Shares | Value |
|---|---|---|---|
| 2026-07-02 | Deer Aaron James | 886 | $22,477.82 |
Top Insiders Buying COLB
- $22,477.821 purchase
Frequently Asked — COLB Insider Buying
What is COLB insider buying?
$COLB insider buying refers to open-market purchases of COLUMBIA BANKING SYSTEM, INC. stock by corporate insiders — officers, directors, and shareholders owning more than 10% of the company. Every purchase is disclosed to the SEC on Form 4 within two business days and is shown on this page.
Why does COLB insider activity matter?
Insiders have the best view into COLUMBIA BANKING SYSTEM, INC.'s operations. When they buy their own stock with personal money — rather than selling option grants — it signals conviction. Clusters of insider buying (two or more insiders purchasing within 14 days) have historically preceded above-market returns.
Where does this COLB insider data come from?
Every transaction on this page is sourced directly from SEC EDGAR Form 4 filings. InsiderAct ingests these filings in near real time and filters for open-market purchases (transaction code P).
How do I get alerts when COLB insiders buy?
Add $COLB to your InsiderAct watchlist and enable email alerts. You'll be notified when a new Form 4 purchase is filed — usually within hours of the transaction.
What is a "cluster buy" signal?
InsiderAct flags a cluster buy when two or more independent insiders at the same company buy on the open market within a 14-day window. Cluster buys are the highest-conviction insider signal we track.
Related Insider Activity
Other stocks with recent insider buying on SEC Form 4
Want alerts when COLB insiders buy?
Add $COLB to your watchlist and get notified the moment a new Form 4 is filed.
Data sourced from SEC Form 4 filings via EDGAR. Read more: What is SEC Form 4?