COST - CIK 0000909832
COSTCO WHOLESALE CORP /NEW has filed 1,001 documents with the SEC between 2016 and 2026. The most frequent type is insider trade (570 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| 3/A | - | 2026-05-15 | 2026-03-02 |
| SCHEDULE 13G | - | 2026-04-29 | - |
| Major company event | 8-K | 2026-04-15 | 2026-04-15 |
| Insider sale notice | 144 | 2026-04-01 | - |
| Insider trade | 4 | 2026-04-01 | 2026-04-01 |
| SCHEDULE 13G/A | - | 2026-03-26 | - |
| Insider trade | 4 | 2026-03-13 | 2026-03-12 |
| Insider trade | 4 | 2026-03-13 | 2026-03-11 |
| New insider ownership | 3 | 2026-03-11 | 2026-03-02 |
| Quarterly report | 10-Q | 2026-03-11 | 2026-02-15 |
| Insider trade | 4 | 2026-03-11 | 2026-03-09 |
| Insider sale notice | 144 | 2026-03-09 | - |
| Major company event | 8-K | 2026-03-05 | 2026-03-05 |
| Insider trade | 4 | 2026-01-28 | 2026-01-27 |
| Insider trade | 4 | 2026-01-28 | 2026-01-27 |
| Insider trade | 4 | 2026-01-23 | 2026-01-21 |
| Insider sale notice | 144 | 2026-01-21 | - |
| Major company event | 8-K | 2026-01-21 | 2026-01-15 |
| Insider trade | 4 | 2026-01-20 | 2026-01-16 |
| Insider trade | 4 | 2026-01-20 | 2026-01-16 |
| New insider ownership | 3 | 2026-01-20 | 2026-01-15 |
| Insider sale notice | 144 | 2026-01-16 | - |
| Insider trade | 4 | 2026-01-15 | 2026-01-14 |
| Insider sale notice | 144 | 2026-01-14 | - |
| Insider trade | 4 | 2026-01-12 | 2026-01-09 |
| Insider sale notice | 144 | 2026-01-09 | - |
| Insider trade | 4 | 2025-12-31 | 2025-12-29 |
| Insider sale notice | 144 | 2025-12-30 | - |
| Insider sale notice | 144 | 2025-12-29 | - |
| Insider trade | 4 | 2025-12-22 | 2025-12-19 |
| Quarterly report | 10-Q | 2025-12-17 | 2025-11-23 |
| Insider trade | 4 | 2025-12-17 | 2025-12-15 |
| Major company event | 8-K | 2025-12-11 | 2025-12-11 |
| Proxy materials | DEFA14A | 2025-12-04 | - |
| Proxy statement | DEF 14A | 2025-12-04 | 2025-08-31 |
| Annual report to shareholders | ARS | 2025-12-04 | 2025-08-31 |
| Insider trade | 4 | 2025-11-12 | 2025-11-10 |
| Insider trade | 4 | 2025-11-12 | 2025-11-07 |
| Insider sale notice | 144 | 2025-11-07 | - |
| Insider sale notice | 144 | 2025-10-24 | - |
| Insider sale notice | 144 | 2025-10-24 | - |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |
| Insider trade | 4 | 2025-10-24 | 2025-10-22 |