# Costco Wholesale Corp: insider transactions

COST · Nasdaq · CIK 909832 · [Consumer discretionary](/sectors/consumer-discretionary.md) · fiscal year ends Aug 30

Pages: [Overview](/companies/cost.md) · [Financials](/companies/cost/financials.md) · [Filings](/companies/cost/filings.md) · [Insiders](/companies/cost/insiders.md)

## All transactions: 48

Non-derivative transactions reported on Forms 4, newest first. Codes P (purchase) and S (sale) are open-market trades. Reported price is as stated on the form, not a market price. Filter with ?type= `open-market`, `purchase`, `sale`.

| Date | Insider | Role | Transaction | Shares | Reported price | Value | Filing |
| --- | --- | --- | --- | ---: | ---: | ---: | --- |
| 2026-10-22 | [Self Adam Webb](/insiders/2150337.md) | Executive Vice President, Officer | Tax withholding (F) | 40.517 | $1,018.21 | $41.3k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Self Adam Webb](/insiders/2150337.md) | Executive Vice President, Officer | Tax withholding (F) | 36.044 | $1,018.21 | $36.7k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Self Adam Webb](/insiders/2150337.md) | Executive Vice President, Officer | Tax withholding (F) | 57.332 | $1,018.21 | $58.4k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Self Adam Webb](/insiders/2150337.md) | Executive Vice President, Officer | Tax withholding (F) | 64.211 | $1,018.21 | $65.4k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Self Adam Webb](/insiders/2150337.md) | Executive Vice President, Officer | Tax withholding (F) | 61.663 | $1,018.21 | $62.8k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Millerchip Gary](/insiders/1771770.md) | Executive Vice President, Officer | Tax withholding (F) | 816.968 | $1,018.21 | $831.8k | [Form 4](/filings/0000909832-26-000125.md) |
| 2026-10-22 | [Millerchip Gary](/insiders/1771770.md) | Executive Vice President, Officer | Tax withholding (F) | 500.323 | $1,018.21 | $509.4k | [Form 4](/filings/0000909832-26-000125.md) |
| 2026-10-22 | [Millerchip Gary](/insiders/1771770.md) | Executive Vice President, Officer | Tax withholding (F) | 313.451 | $1,018.21 | $319.2k | [Form 4](/filings/0000909832-26-000125.md) |
| 2026-10-22 | [Millerchip Gary](/insiders/1771770.md) | Executive Vice President, Officer | Grant or award (A) | 6,140 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000125.md) |
| 2026-10-22 | [Polit Javier](/insiders/1852700.md) | Executive Vice President, Officer | Tax withholding (F) | 549.437 | $1,018.21 | $559.4k | [Form 4](/filings/0000909832-26-000127.md) |
| 2026-10-22 | [Polit Javier](/insiders/1852700.md) | Executive Vice President, Officer | Tax withholding (F) | 337.01 | $1,018.21 | $343.1k | [Form 4](/filings/0000909832-26-000127.md) |
| 2026-10-22 | [Polit Javier](/insiders/1852700.md) | Executive Vice President, Officer | Tax withholding (F) | 294.297 | $1,018.21 | $299.7k | [Form 4](/filings/0000909832-26-000127.md) |
| 2026-10-22 | [Polit Javier](/insiders/1852700.md) | Executive Vice President, Officer | Tax withholding (F) | 390.872 | $1,018.21 | $398.0k | [Form 4](/filings/0000909832-26-000127.md) |
| 2026-10-22 | [Polit Javier](/insiders/1852700.md) | Executive Vice President, Officer | Grant or award (A) | 4,129 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000127.md) |
| 2026-10-22 | [Vachris Roland Michael](/insiders/1679566.md) | President and CEO, Director, Officer | Tax withholding (F) | 1,131.478 | $1,018.21 | $1.2m | [Form 4](/filings/0000909832-26-000124.md) |
| 2026-10-22 | [Vachris Roland Michael](/insiders/1679566.md) | President and CEO, Director, Officer | Tax withholding (F) | 1,120.544 | $1,018.21 | $1.1m | [Form 4](/filings/0000909832-26-000124.md) |
| 2026-10-22 | [Vachris Roland Michael](/insiders/1679566.md) | President and CEO, Director, Officer | Tax withholding (F) | 1,403.592 | $1,018.21 | $1.4m | [Form 4](/filings/0000909832-26-000124.md) |
| 2026-10-22 | [Vachris Roland Michael](/insiders/1679566.md) | President and CEO, Director, Officer | Grant or award (A) | 13,973 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000124.md) |
| 2026-10-22 | [Wilderotter Mary Agnes](/insiders/1180610.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000123.md) |
| 2026-10-22 | [Stanton John W](/insiders/904858.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000122.md) |
| 2026-10-22 | [Raikes Jeffrey S](/insiders/1193112.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000120.md) |
| 2026-10-22 | [Raimondo Gina Marie](/insiders/2104063.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000121.md) |
| 2026-10-22 | [Klauer James C](/insiders/1729360.md) | Executive Vice President, Officer | Tax withholding (F) | 541.85 | $1,018.21 | $551.7k | [Form 4](/filings/0000909832-26-000119.md) |
| 2026-10-22 | [Klauer James C](/insiders/1729360.md) | Executive Vice President, Officer | Tax withholding (F) | 442.688 | $1,018.21 | $450.7k | [Form 4](/filings/0000909832-26-000119.md) |
| 2026-10-22 | [Klauer James C](/insiders/1729360.md) | Executive Vice President, Officer | Tax withholding (F) | 529.972 | $1,018.21 | $539.6k | [Form 4](/filings/0000909832-26-000119.md) |
| 2026-10-22 | [Klauer James C](/insiders/1729360.md) | Executive Vice President, Officer | Tax withholding (F) | 396.177 | $1,018.21 | $403.4k | [Form 4](/filings/0000909832-26-000119.md) |
| 2026-10-22 | [Klauer James C](/insiders/1729360.md) | Executive Vice President, Officer | Tax withholding (F) | 190.678 | $1,018.21 | $194.2k | [Form 4](/filings/0000909832-26-000119.md) |
| 2026-10-22 | [James Hamilton E](/insiders/1238989.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000115.md) |
| 2026-10-22 | [Jewell Sarah MR Sally](/insiders/1174963.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000117.md) |
| 2026-10-22 | [George Sarah Catherine](/insiders/2112687.md) | Executive Vice President, Officer | Tax withholding (F) | 46.711 | $1,018.21 | $47.6k | [Form 4](/filings/0000909832-26-000113.md) |
| 2026-10-22 | [George Sarah Catherine](/insiders/2112687.md) | Executive Vice President, Officer | Tax withholding (F) | 34.821 | $1,018.21 | $35.5k | [Form 4](/filings/0000909832-26-000113.md) |
| 2026-10-22 | [George Sarah Catherine](/insiders/2112687.md) | Executive Vice President, Officer | Tax withholding (F) | 55.774 | $1,018.21 | $56.8k | [Form 4](/filings/0000909832-26-000113.md) |
| 2026-10-22 | [George Sarah Catherine](/insiders/2112687.md) | Executive Vice President, Officer | Tax withholding (F) | 62.467 | $1,018.21 | $63.6k | [Form 4](/filings/0000909832-26-000113.md) |
| 2026-10-22 | [George Sarah Catherine](/insiders/2112687.md) | Executive Vice President, Officer | Tax withholding (F) | 59.988 | $1,018.21 | $61.1k | [Form 4](/filings/0000909832-26-000113.md) |
| 2026-10-22 | [Foulkes Helena](/insiders/1429996.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000111.md) |
| 2026-10-22 | [Denman Kenneth D](/insiders/1254779.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000109.md) |
| 2026-10-22 | [Barbre Tiffany Marie](/insiders/2076006.md) | Principal Accounting Officer | Tax withholding (F) | 166.451 | $1,018.21 | $169.5k | [Form 4](/filings/0000909832-26-000105.md) |
| 2026-10-22 | [Barbre Tiffany Marie](/insiders/2076006.md) | Principal Accounting Officer | Tax withholding (F) | 84.603 | $1,018.21 | $86.1k | [Form 4](/filings/0000909832-26-000105.md) |
| 2026-10-22 | [Barbre Tiffany Marie](/insiders/2076006.md) | Principal Accounting Officer | Tax withholding (F) | 101.536 | $1,018.21 | $103.4k | [Form 4](/filings/0000909832-26-000105.md) |
| 2026-10-22 | [Barbre Tiffany Marie](/insiders/2076006.md) | Principal Accounting Officer | Tax withholding (F) | 93.948 | $1,018.21 | $95.7k | [Form 4](/filings/0000909832-26-000105.md) |
| 2026-10-22 | [Barbre Tiffany Marie](/insiders/2076006.md) | Principal Accounting Officer | Tax withholding (F) | 90.23 | $1,018.21 | $91.9k | [Form 4](/filings/0000909832-26-000105.md) |
| 2026-10-22 | [Barbre Tiffany Marie](/insiders/2076006.md) | Principal Accounting Officer | Grant or award (A) | 1,965 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000105.md) |
| 2026-10-22 | [Decker Susan L](/insiders/1234655.md) | Director | Grant or award (A) | 266 | $0.00 | $0 | [Form 4](/filings/0000909832-26-000107.md) |
| 2026-10-22 | [Adamo Claudine](/insiders/1916124.md) | Executive Vice President, Officer | Tax withholding (F) | 108.607 | $1,018.21 | $110.6k | [Form 4](/filings/0000909832-26-000103.md) |
| 2026-10-22 | [Adamo Claudine](/insiders/1916124.md) | Executive Vice President, Officer | Tax withholding (F) | 110.967 | $1,018.21 | $113.0k | [Form 4](/filings/0000909832-26-000103.md) |
| 2026-10-22 | [Adamo Claudine](/insiders/1916124.md) | Executive Vice President, Officer | Tax withholding (F) | 177.058 | $1,018.21 | $180.3k | [Form 4](/filings/0000909832-26-000103.md) |
| 2026-10-22 | [Adamo Claudine](/insiders/1916124.md) | Executive Vice President, Officer | Tax withholding (F) | 198.289 | $1,018.21 | $201.9k | [Form 4](/filings/0000909832-26-000103.md) |
| 2026-10-22 | [Adamo Claudine](/insiders/1916124.md) | Executive Vice President, Officer | Tax withholding (F) | 96.942 | $1,018.21 | $98.7k | [Form 4](/filings/0000909832-26-000103.md) |

Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 27, 2026, 16:16 ET. No prices; not investment advice.