Kumi Yamamoto Baruffi
EVP General Counsel, Corp Sec · COLUMBIA BANKING SYSTEM, INC.
- 2026
- Mar 20, 2026
- 7
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Kumi Yamamoto Baruffi 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 in COLB purchases and sales in the last 12 months
- Torran B. Nixon - $128K in COLB purchases and sales in the last 12 months
- Devine David Moore - $115K in COLB purchases and sales in the last 12 months
- Aaron James Deer - $22K in COLB purchases and sales in the last 12 months
- Brock Lakely - $6K in COLB purchases and sales in the last 12 months
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Frequently asked questions
Who is Kumi Yamamoto Baruffi?
Kumi Yamamoto Baruffi is a corporate insider, tracked as EVP General Counsel, Corp Sec 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.
When did Kumi Yamamoto Baruffi last file a Form 4?
The most recent primary Form 4 on record is dated 20 March 2026, one of 7 filings going back to 2026.
Has Kumi Yamamoto Baruffi been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($25K) across all tracked filings.
