COST insider transaction filings
COSTCO WHOLESALE CORP /NEW — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-14. Screen COST transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 9 Form 4 filings. 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 by 1 insider — 885 shares, $847,345 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 15.
- Largest priced transaction: sale of 885 shares @ $957.45 ($847,345) by DENMAN KENNETH D, filed 2026-06-25.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| DENMAN KENNETH D — Director | 1 | — | 1 leg · 885 sh · $847,345 | — |
| Adamo Claudine — Executive Vice President | 1 | — | — | 2 |
| Frates Caton — Executive Vice President | 1 | — | — | 2 |
| Jones Teresa A. — Executive Vice President | 1 | — | — | 2 |
| Klauer James C — Executive Vice President | 1 | — | — | 2 |
| Riel Pierre — Executive Vice President | 1 | — | — | 2 |
| Rubanenko Yoram — Executive Vice President | 1 | — | — | 2 |
| Wilcox William Richard — Executive Vice President | 1 | — | — | 2 |
| RAIKES JEFFREY S — Director | 1 | — | — | 1 |
Recent Form 4 filings — COSTCO WHOLESALE CORP /NEW
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-14 | 4 | Rubanenko Yoram — Executive Vice President | Grant/award (A): 4,129 @ $0 · Tax withholding (F): 1,695.95 @ $902.38 | EDGAR |
| 2026-09-14 | 4 | Wilcox William Richard — Executive Vice President | Grant/award (A): 4,129 @ $0 · Tax withholding (F): 1,934.61 @ $902.38 | EDGAR |
| 2026-09-14 | 4 | Klauer James C — Executive Vice President | Grant/award (A): 4,129 @ $0 · Tax withholding (F): 936.12 @ $902.38 | EDGAR |
| 2026-09-14 | 4 | Riel Pierre — Executive Vice President | Grant/award (A): 4,552 @ $0 · Tax withholding (F): 1,561.66 @ $902.38 | EDGAR |
| 2026-09-14 | 4 | Frates Caton — Executive Vice President | Grant/award (A): 4,552 @ $0 · Tax withholding (F): 1,654.36 @ $902.38 | EDGAR |
| 2026-09-14 | 4 | Jones Teresa A. — Executive Vice President | Grant/award (A): 4,129 @ $0 · Tax withholding (F): 1,458.54 @ $902.38 | EDGAR |
| 2026-09-14 | 4 | Adamo Claudine — Executive Vice President | Grant/award (A): 4,129 @ $0 · Tax withholding (F): 916.68 @ $902.38 | EDGAR |
| 2026-07-14 | 4 | RAIKES JEFFREY S — Director | Gift (G): 5,249 @ $0 | EDGAR |
| 2026-06-25 | 4 | DENMAN KENNETH D — Director | Sale (S): 885 @ $957.45 | EDGAR |
| 2026-04-01 | 4 | Frates Caton — Executive Vice President | Sale (S): 700 @ $993 | EDGAR |
| 2026-03-13 | 4 | George Sarah Catherine — Executive Vice President | Code (I): 642.13 @ $991.21 | EDGAR |
| 2026-03-13 | 4 | MILLERCHIP GARY — Executive Vice President | Tax withholding (F): 1,154.02 @ $992.23 | EDGAR |
| 2026-03-11 | 4 | Adamo Claudine — Executive Vice President | Sale (S): 730 @ $1,003.02 | EDGAR |
| 2026-01-28 | 4 | Jones Teresa A. — Executive Vice President | Gift (G): 300 @ $0 | EDGAR |
| 2026-01-28 | 4 | RAIKES JEFFREY S — Director | Gift (G): 5,115 @ $0 | EDGAR |
| 2026-01-23 | 4 | Jones Teresa A. — Executive Vice President | Sale (S): 850 @ $986.26 | EDGAR |
| 2026-01-20 | 4 | Raimondo Gina Marie — Director | Grant/award (A): 215 @ $0 | EDGAR |
| 2026-01-20 | 4 | DECKER SUSAN L — Director | Sale (S): 458 @ $955 | EDGAR |
| 2026-01-15 | 4 | Klauer James C — Executive Vice President | Sale (S): 1,500 @ $939 | EDGAR |
| 2026-01-12 | 4 | Miller Russell D — Sr. Executive Vice President | Sale (S): 1,500 @ $916.32 | EDGAR |
| 2025-12-31 | 4 | POLIT JAVIER — Executive Vice President | Sale (S): 2,049 @ $867.21 · Sale (S): 558.30 @ $862.89 | EDGAR |
| 2025-12-22 | 4 | DENMAN KENNETH D — Director | Gift (G): 325 @ $0 | EDGAR |
| 2025-12-17 | 4 | DECKER SUSAN L — Director | Gift (G): 2,827 @ $0 | EDGAR |
| 2025-11-12 | 4 | Wilcox William Richard — Executive Vice President | Sale (S): 2,400 @ $930.13 | EDGAR |
| 2025-11-12 | 4 | RAIKES JEFFREY S — Director | Gift (G): 4,120 @ $0 | EDGAR |
| 2025-10-24 | 4 | STANTON JOHN W — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | Barbre Tiffany Marie | Grant/award (A): 2,118 @ $0 · Tax withholding (F): 113.53 @ $944.68 · Tax withholding (F): 90.23 @ $944.68 · Tax withholding (F): 118.56 @ $944.68 · Tax withholding (F): 135.40 @ $944.68 · Tax withholding (F): 84.60 @ $944.68 · +1 more | EDGAR |
| 2025-10-24 | 4 | Frates Caton — Executive Vice President | Tax withholding (F): 155.74 @ $944.68 · Tax withholding (F): 247.66 @ $944.68 · Tax withholding (F): 758.28 @ $944.68 · Tax withholding (F): 901.26 @ $944.68 · Tax withholding (F): 705.75 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | Adamo Claudine — Executive Vice President | Tax withholding (F): 121.78 @ $944.68 · Tax withholding (F): 96.94 @ $944.68 · Tax withholding (F): 198.69 @ $944.68 · Tax withholding (F): 176.66 @ $944.68 · Tax withholding (F): 110.57 @ $944.68 · Sale (S): 2,700 @ $935.68 | EDGAR |
| 2025-10-24 | 4 | Sullivan John Christopher — Executive VP | Grant/award (A): 4,654 @ $0 · Tax withholding (F): 421.01 @ $944.68 · Tax withholding (F): 572.83 @ $944.68 · Tax withholding (F): 568.89 @ $944.68 · Tax withholding (F): 584.85 @ $944.68 · Tax withholding (F): 365.96 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | POLIT JAVIER — Executive Vice President | Grant/award (A): 4,219 @ $0 · Tax withholding (F): 537.78 @ $944.68 · Tax withholding (F): 293.89 @ $944.68 · Tax withholding (F): 336.61 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | MILLERCHIP GARY — Executive Vice President | Grant/award (A): 6,268 @ $0 · Tax withholding (F): 313.05 @ $944.68 · Tax withholding (F): 500.32 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | Callans Patrick J — Executive Vice President | Tax withholding (F): 239.95 @ $944.68 · Tax withholding (F): 191.08 @ $944.68 · Tax withholding (F): 198.69 @ $944.68 · Tax withholding (F): 176.66 @ $944.68 · Tax withholding (F): 110.57 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | Klauer James C — Executive Vice President | Tax withholding (F): 239.95 @ $944.68 · Tax withholding (F): 190.68 @ $944.68 · Tax withholding (F): 198.69 @ $944.68 · Tax withholding (F): 177.06 @ $944.68 · Tax withholding (F): 110.97 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | Vachris Roland Michael — President and CEO, Director | Grant/award (A): 13,834 @ $0 · Tax withholding (F): 1,493.05 @ $944.68 · Tax withholding (F): 1,159.75 @ $944.68 | EDGAR |
| 2025-10-24 | 4 | Foulkes Helena — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | DENMAN KENNETH D — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | JAMES HAMILTON E — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | DECKER SUSAN L — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | RAIKES JEFFREY S — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | Wilderotter Mary Agnes — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-24 | 4 | JEWELL SARAH MR SALLY — Director | Grant/award (A): 286 @ $0 | EDGAR |
| 2025-10-01 | 4 | Miller Russell D — Sr. Executive Vice President | Sale (S): 3,381 @ $915 | EDGAR |
| 2025-09-30 | 4 | Frates Caton — Executive Vice President | Sale (S): 1,540 @ $910.02 | EDGAR |
| 2025-09-24 | 4 | Miller Russell D — Sr. Executive Vice President | Gift (G): 2,918 @ $0 · Gift (G): 2,918 @ $0 | EDGAR |
| 2025-09-12 | 4 | Adamo Claudine — Executive Vice President | Grant/award (A): 4,219 @ $0 · Tax withholding (F): 949.67 @ $956.29 | EDGAR |
| 2025-09-12 | 4 | Rubanenko Yoram — Executive Vice President | Grant/award (A): 4,219 @ $0 · Tax withholding (F): 1,745.91 @ $956.29 | EDGAR |
| 2025-09-12 | 4 | Callans Patrick J — Executive Vice President | Grant/award (A): 4,219 @ $0 · Tax withholding (F): 949.67 @ $956.29 | EDGAR |
| 2025-09-12 | 4 | Miller Russell D — Sr. Executive Vice President | Grant/award (A): 4,654 @ $0 · Tax withholding (F): 1,735.09 @ $956.29 | EDGAR |
| 2025-09-12 | 4 | Klauer James C — Executive Vice President | Grant/award (A): 4,219 @ $0 · Tax withholding (F): 958.29 @ $956.29 | EDGAR |
Recent 8-K events — COSTCO WHOLESALE CORP /NEW
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-07-08 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-28 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-15 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-05 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-01-21 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders 8.01 — Other Events | EDGAR |
| 2025-12-11 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-10-20 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-10-15 | 8-K | 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-09-25 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-08-07 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
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