BARUFFI KUMI YAMAMOTO — SEC Form 4 filings
SEC reporting owner CIK 1619728. 13 Form 4 filings on record with FilingPulse; latest filed 2026-03-20.
Transaction summary — filings shown
Covers all 13 filings on record, filed 2024-02-20 to 2026-03-20. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 1 leg across 1 filing — 937 shares, $24,578 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 24.
- Largest priced transaction: sale of 937 shares @ $26.23 ($24,578) in COLUMBIA BANKING SYSTEM, INC., filed 2026-03-17.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| COLUMBIA BANKING SYSTEM, INC. (COLB) | EVP General Counsel, Corp Sec | 13 | — | 1 leg · 937 sh · $24,578 | 24 |
Form 4 filings — BARUFFI KUMI YAMAMOTO
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-20 | 4/A | COLUMBIA BANKING SYSTEM, INC. (COLB) | Tax withholding (F): 937 @ $26.23 | EDGAR |
| 2026-03-17 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Option exercise (M): 2,381 @ $26.23 · Sale (S): 937 @ $26.23 · Option exercise (M): 2,381 (derivative) @ $0 | EDGAR |
| 2026-03-02 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Tax withholding (F): 1,799 @ $28.45 | EDGAR |
| 2026-02-20 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Grant/award (A): 8,322 (derivative) @ $31.24 | EDGAR |
| 2026-02-18 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Tax withholding (F): 1,036 @ $31.49 | EDGAR |
| 2026-02-04 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Grant/award (A): 5,093 @ $29.69 · Tax withholding (F): 2,110 @ $29.69 | EDGAR |
| 2026-01-22 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Disposition to issuer (D): 632 @ $0 · Tax withholding (F): 1,508 @ $28.35 | EDGAR |
| 2025-03-04 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Tax withholding (F): 1,799 @ $26.73 | EDGAR |
| 2025-02-26 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Grant/award (A): 7,142 (derivative) @ $26.60 · Grant/award (A): 3,571 (derivative) @ $26.60 · Grant/award (A): 3,571 (derivative) @ $26.60 | EDGAR |
| 2025-02-18 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Grant/award (A): 1,012 @ $27.41 · Tax withholding (F): 442 @ $27.41 · Tax withholding (F): 1,031 @ $27.41 | EDGAR |
| 2025-01-03 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Tax withholding (F): 689 @ $27.01 · Tax withholding (F): 772 @ $27.01 | EDGAR |
| 2024-03-04 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Grant/award (A): 13,710 @ $17.87 · Grant/award (A): 6,855 (derivative) @ $17.87 · Grant/award (A): 6,855 (derivative) @ $17.87 | EDGAR |
| 2024-02-20 | 4 | COLUMBIA BANKING SYSTEM, INC. (COLB) | Grant/award (A): 673 @ $19.01 · Grant/award (A): 1,012 @ $19.01 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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