GHC - CIK 0000104889
Graham Holdings Co has filed 1,251 documents with the SEC between 1994 and 2026. The most frequent type is insider trade (519 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 |
|---|---|---|---|
| Institutional holdings | 13F-HR | 2026-05-15 | 2026-03-31 |
| SCHEDULE 13G/A | - | 2026-05-15 | - |
| Major company event | 8-K | 2026-05-05 | 2026-05-05 |
| Major company event | 8-K | 2026-05-01 | 2026-05-01 |
| SCHEDULE 13G | - | 2026-04-30 | - |
| Major company event | 8-K | 2026-04-30 | 2026-04-30 |
| Quarterly report | 10-Q | 2026-04-30 | 2026-03-31 |
| SCHEDULE 13G | - | 2026-04-29 | - |
| Insider trade | 4 | 2026-04-02 | 2026-04-01 |
| Insider trade | 4 | 2026-04-02 | 2026-04-01 |
| Insider trade | 4 | 2026-04-02 | 2026-04-01 |
| Insider trade | 4 | 2026-04-02 | 2026-04-01 |
| Insider trade | 4 | 2026-04-02 | 2026-04-01 |
| SCHEDULE 13G/A | - | 2026-03-27 | - |
| Annual report to shareholders | ARS | 2026-03-24 | 2025-12-31 |
| Proxy materials | DEFA14A | 2026-03-24 | - |
| Proxy statement | DEF 14A | 2026-03-24 | 2026-05-05 |
| Insider trade | 4 | 2026-03-10 | 2025-07-30 |
| Major company event | 8-K | 2026-02-25 | 2026-02-25 |
| Annual report | 10-K | 2026-02-25 | 2025-12-31 |
| Institutional holdings | 13F-HR | 2026-02-13 | 2025-12-31 |
| Insider trade | 4 | 2026-01-21 | 2026-01-16 |
| SCHEDULE 13G/A | - | 2026-01-21 | - |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2026-01-05 | 2026-01-02 |
| Insider trade | 4 | 2025-12-29 | 2025-12-29 |
| Major company event | 8-K | 2025-11-24 | 2025-11-24 |
| Institutional holdings | 13F-HR | 2025-11-14 | 2025-09-30 |
| Major company event | 8-K | 2025-11-13 | 2025-11-13 |
| Insider trade | 4 | 2025-11-13 | 2025-11-11 |
| Insider trade | 4 | 2025-11-13 | 2025-11-11 |
| SCHEDULE 13G/A | - | 2025-11-13 | - |
| Major company event | 8-K | 2025-11-12 | 2025-11-12 |
| Major company event | 8-K | 2025-10-29 | 2025-10-29 |
| Quarterly report | 10-Q | 2025-10-29 | 2025-09-30 |
| Insider trade | 4 | 2025-10-22 | 2025-10-20 |
| Insider trade | 4 | 2025-10-09 | 2025-10-07 |
| Insider trade | 4 | 2025-10-09 | 2025-10-07 |
| Insider trade | 4 | 2025-10-02 | 2025-10-01 |
| Insider trade | 4 | 2025-10-02 | 2025-10-01 |
| Insider trade | 4 | 2025-10-02 | 2025-10-01 |
| Insider trade | 4 | 2025-10-02 | 2025-10-01 |
| Insider trade | 4 | 2025-10-02 | 2025-10-01 |
| Insider trade | 4 | 2025-09-30 | 2025-09-29 |
| Insider trade | 4 | 2025-09-30 | 2025-09-29 |
| N-PX | - | 2025-08-27 | 2025-06-30 |
| Insider trade | 4 | 2025-08-22 | 2025-08-20 |