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 |
|---|---|---|---|
| Insider trade | 4 | 2024-11-05 | 2024-11-01 |
| Major company event | 8-K | 2024-10-30 | 2024-10-30 |
| Quarterly report | 10-Q | 2024-10-30 | 2024-09-30 |
| Insider trade | 4 | 2024-10-17 | 2024-10-15 |
| Insider trade | 4 | 2024-10-17 | 2024-10-15 |
| Employee plan annual report | 11-K | 2024-10-04 | 2023-12-31 |
| Employee plan annual report | 11-K | 2024-10-04 | 2023-12-31 |
| Employee plan annual report | 11-K | 2024-10-04 | 2023-12-31 |
| Insider trade | 4 | 2024-10-02 | 2024-10-01 |
| Insider trade | 4 | 2024-10-02 | 2024-10-01 |
| Insider trade | 4 | 2024-10-02 | 2024-10-01 |
| Insider trade | 4 | 2024-10-02 | 2024-10-01 |
| Insider trade | 4 | 2024-09-25 | 2024-09-23 |
| Insider trade | 4 | 2024-09-25 | 2024-09-23 |
| Company correspondence | CORRESP | 2024-09-23 | - |
| SEC correspondence | UPLOAD | 2024-09-19 | - |
| Major company event | 8-K | 2024-09-13 | 2024-09-12 |
| Insider trade | 4 | 2024-09-13 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-05 | 2024-09-03 |
| Activist ownership stake (update) | SC 13D/A | 2024-09-05 | - |
| Activist ownership stake | SC 13D | 2024-09-05 | - |
| N-PX | - | 2024-09-03 | 2024-06-30 |
| Passive ownership stake | SC 13G | 2024-08-20 | - |
| Institutional holdings | 13F-HR | 2024-08-14 | 2024-06-30 |
| Major company event | 8-K | 2024-07-31 | 2024-07-31 |
| Quarterly report | 10-Q | 2024-07-31 | 2024-06-30 |
| Insider trade | 4 | 2024-07-02 | 2024-07-01 |
| Insider trade | 4 | 2024-07-02 | 2024-07-01 |
| Insider trade | 4 | 2024-07-02 | 2024-07-01 |
| Insider trade | 4 | 2024-07-02 | 2024-07-01 |
| NT 11-K | - | 2024-06-28 | 2023-12-31 |
| NT 11-K | - | 2024-06-28 | 2023-12-31 |
| NT 11-K | - | 2024-06-28 | 2023-12-31 |
| SD | - | 2024-05-31 | - |
| Passive ownership stake | SC 13G | 2024-05-30 | - |
| Insider trade | 4 | 2024-05-29 | 2024-05-28 |
| Institutional holdings | 13F-HR | 2024-05-16 | 2024-03-31 |
| Passive ownership stake | SC 13G | 2024-05-13 | - |
| Passive ownership stake | SC 13G | 2024-05-10 | - |
| Activist ownership stake | SC 13D | 2024-05-10 | - |
| Major company event | 8-K | 2024-05-08 | 2024-05-07 |
| Major company event | 8-K | 2024-05-01 | 2024-05-01 |
| Quarterly report | 10-Q | 2024-05-01 | 2024-03-31 |
| Insider trade (amended) | 4/A | 2024-04-02 | 2024-04-01 |
| Insider trade | 4 | 2024-04-02 | 2024-04-01 |
| Insider trade | 4 | 2024-04-02 | 2024-04-01 |
| Insider trade | 4 | 2024-04-02 | 2024-04-01 |
| Insider trade | 4 | 2024-04-02 | 2024-04-01 |
| Annual report to shareholders | ARS | 2024-03-26 | 2023-12-31 |
| Proxy materials | DEFA14A | 2024-03-26 | - |