Baruffi Kumi Yamamoto insider trades
Baruffi Kumi Yamamoto has filed 27 Form 4s with the SEC that we hold, all for Columbia Banking System, INC. (COLB), as EVP General Counsel, Corp Sec. Across all of them we count 5 purchases worth $48.4K and 1 sale worth $24.6K reported on Form 4. In the last 12 months: 0 purchases ($0) and 1 sale ($24.6K). The largest single trade was a sale of 937 shares of Columbia Banking System, INC. worth $24.6K, dated 2026-03-13. The first filing on our record is dated 2021-07-06 and the latest 2026-03-20.
Columbia Banking System, INC. (COLB)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2021-07-06 | P, purchase reported on Form 4 | 304 | $9.6K | 2021-07-06 |
| 2022-01-04 | P, purchase reported on Form 4 | 186 | $5.5K | 2022-01-05 |
| 2022-06-30 | P, purchase reported on Form 4 | 446 | $11.5K | 2022-07-01 |
| 2022-12-30 | P, purchase reported on Form 4 | 232 | $6.2K | 2023-01-04 |
| 2023-06-30 | P, purchase reported on Form 4 | 854 | $15.6K | 2023-07-05 |
| 2026-03-13 | S, sale reported on Form 4 | 937 | $24.6K | 2026-03-17 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1619728) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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