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 | 2010-09-24 | 2010-09-22 |
| Insider trade | 4 | 2010-08-27 | 2010-08-25 |
| Activist ownership stake (update) | SC 13D/A | 2010-08-27 | - |
| Insider trade | 4 | 2010-08-23 | 2010-08-23 |
| Major company event | 8-K | 2010-08-16 | 2010-08-16 |
| Quarterly report | 10-Q | 2010-08-11 | 2010-07-04 |
| Major company event | 8-K | 2010-08-06 | 2010-08-06 |
| Insider trade | 4 | 2010-07-01 | 2010-06-29 |
| Insider trade | 4 | 2010-06-17 | 2010-06-15 |
| Major company event | 8-K | 2010-06-10 | 2010-06-10 |
| New insider ownership | 3 | 2010-06-10 | 2010-06-10 |
| SEC correspondence | UPLOAD | 2010-06-10 | - |
| Company correspondence | CORRESP | 2010-06-03 | - |
| SEC correspondence | UPLOAD | 2010-05-19 | - |
| Major company event | 8-K | 2010-05-18 | 2010-05-13 |
| Quarterly report | 10-Q | 2010-05-11 | 2010-04-04 |
| Major company event | 8-K | 2010-05-07 | 2010-05-07 |
| Major company event | 8-K | 2010-05-05 | 2010-05-05 |
| Company correspondence | CORRESP | 2010-05-04 | - |
| SEC correspondence | UPLOAD | 2010-04-20 | - |
| Insider trade | 4 | 2010-04-14 | 2010-04-12 |
| Passive ownership stake (update) | SC 13G/A | 2010-04-07 | - |
| Proxy statement | DEF 14A | 2010-03-24 | 2010-05-13 |
| Insider trade | 4 | 2010-03-05 | 2010-02-05 |
| Annual report | 10-K | 2010-03-02 | 2010-01-03 |
| Major company event | 8-K | 2010-02-24 | 2010-02-24 |
| Passive ownership stake (update) | SC 13G/A | 2010-02-05 | - |
| Insider trade | 4 | 2010-02-02 | 2010-01-29 |
| Major company event | 8-K | 2010-01-21 | 2010-01-21 |
| SEC correspondence | UPLOAD | 2009-11-09 | - |
| Quarterly report | 10-Q | 2009-11-06 | 2009-09-27 |
| Company correspondence | CORRESP | 2009-11-02 | - |
| Major company event | 8-K | 2009-11-02 | 2009-10-30 |
| SEC correspondence | UPLOAD | 2009-10-20 | - |
| Insider trade | 4 | 2009-10-14 | 2009-10-09 |
| Company correspondence | CORRESP | 2009-10-09 | - |
| Company correspondence | CORRESP | 2009-09-29 | - |
| SEC correspondence | UPLOAD | 2009-09-15 | - |
| SEC correspondence | UPLOAD | 2009-08-24 | - |
| Major company event | 8-K | 2009-08-20 | 2009-08-20 |
| Quarterly report | 10-Q | 2009-08-04 | 2009-06-28 |
| Major company event | 8-K | 2009-07-31 | 2009-07-31 |
| Company correspondence | CORRESP | 2009-07-16 | - |
| Company correspondence | CORRESP | 2009-06-19 | - |
| Company correspondence | CORRESP | 2009-05-15 | - |
| Insider trade | 4 | 2009-05-08 | 2009-05-06 |
| Quarterly report | 10-Q | 2009-05-06 | 2009-03-29 |
| Insider trade | 4 | 2009-05-06 | 2009-05-04 |
| SEC correspondence | UPLOAD | 2009-05-06 | - |
| Major company event | 8-K | 2009-05-04 | 2009-05-01 |