# Self Adam Webb: insider transactions

SEC CIK 2150337. Roles and transactions as reported on Form 4. Latest Form 4 filed 2026-10-27.

## Roles

| Company | Role | Transactions | First | Latest |
| --- | --- | ---: | --- | --- |
| [Costco Wholesale Corp](/companies/cost.md) | Executive Vice President, Officer | 5 | 2026-10-22 | 2026-10-22 |

## Transactions: 5

Every transaction reported, newest first. Codes P and S are open-market purchases and sales. Reported price is as stated on the form.

| Date | Company | Transaction | Shares | Reported price | Value | Filing |
| --- | --- | --- | ---: | ---: | ---: | --- |
| 2026-10-22 | [Costco Wholesale Corp](/companies/cost.md) | Tax withholding (F) | 40.517 | $1,018.21 | $41.3k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Costco Wholesale Corp](/companies/cost.md) | Tax withholding (F) | 36.044 | $1,018.21 | $36.7k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Costco Wholesale Corp](/companies/cost.md) | Tax withholding (F) | 57.332 | $1,018.21 | $58.4k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Costco Wholesale Corp](/companies/cost.md) | Tax withholding (F) | 64.211 | $1,018.21 | $65.4k | [Form 4](/filings/0000909832-26-000129.md) |
| 2026-10-22 | [Costco Wholesale Corp](/companies/cost.md) | Tax withholding (F) | 61.663 | $1,018.21 | $62.8k | [Form 4](/filings/0000909832-26-000129.md) |

Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 31, 2026, 04:56 ET. No prices; not investment advice.