Summary
Updated Aug 31, 2026
Aaron James Deer is EVP Chief Strategy/Innov Offcr of COLUMBIA BANKING SYSTEM, INC. (COLB). 7 SEC Form 4 filings on record, most recently on 2 July 2026. Most recent open-market trade: bought $22K of COLB on 2 July 2026. Lifetime open-market purchases: $22K.
Recent Transactions
9Every recent SEC Form 4 transaction Aaron James Deer has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Aaron James Deer go back to 2026: 7 primary Form 4 filings, an average of 7.0 per year. The typical open-market purchase is $22K (1 buy totaling $22K). The largest single buy on record is $22K of COLB in 2026. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Aaron James Deer files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Steven R. Gardner - $404K of COLB open-market activity in the last 12 months
- Torran B. Nixon - $128K of COLB open-market activity in the last 12 months
- Devine David Moore - $115K of COLB open-market activity in the last 12 months
- Kumi Yamamoto Baruffi - $25K of COLB open-market activity in the last 12 months
- Brock Lakely - $6K of COLB open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Aaron James Deer?
Aaron James Deer is a corporate insider, tracked as EVP Chief Strategy/Innov Offcr of COLUMBIA BANKING SYSTEM, INC. (COLB). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Aaron James Deer submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Aaron James Deer been buying or selling stock?
Recorded transactions: 1 open-market purchase ($22K) and 0 open-market sales across all tracked filings.
Where can I see all of Aaron James Deer's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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