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 |
|---|---|---|---|
| Proxy statement | DEF 14A | 2009-03-25 | 2009-05-14 |
| Insider trade | 4 | 2009-03-18 | 2009-03-16 |
| Insider trade | 4 | 2009-03-16 | 2009-03-12 |
| Insider trade | 4 | 2009-03-11 | 2009-03-09 |
| Insider trade | 4 | 2009-03-09 | 2009-03-05 |
| Activist ownership stake (update) | SC 13D/A | 2009-03-09 | - |
| Insider trade | 4 | 2009-03-05 | 2009-03-03 |
| Insider trade | 4 | 2009-03-02 | 2009-02-26 |
| Annual report | 10-K | 2009-02-26 | 2008-12-28 |
| Major company event | 8-K | 2009-02-25 | 2009-02-25 |
| Passive ownership stake (update) | SC 13G/A | 2009-02-12 | - |
| Passive ownership stake | SC 13G | 2009-02-06 | - |
| Insider trade | 4 | 2009-02-03 | 2009-01-30 |
| Major company event | 8-K | 2009-01-30 | 2009-01-30 |
| Prospectus supplement | 424B5 | 2009-01-28 | - |
| Major company event | 8-K | 2009-01-28 | 2009-01-27 |
| Free writing prospectus | FWP | 2009-01-27 | - |
| 424B3 | - | 2009-01-27 | - |
| Major company event | 8-K | 2009-01-23 | 2009-01-23 |
| Insider trade | 4 | 2009-01-23 | 2009-01-21 |
| Insider trade | 4 | 2009-01-23 | 2009-01-07 |
| Passive ownership stake (update) | SC 13G/A | 2009-01-15 | - |
| SEC correspondence | UPLOAD | 2009-01-14 | - |
| SEC correspondence | UPLOAD | 2009-01-14 | - |
| SEC correspondence | UPLOAD | 2009-01-09 | - |
| Insider trade | 4 | 2009-01-07 | 2009-01-05 |
| Insider trade | 4 | 2009-01-05 | 2009-01-05 |
| Insider trade | 4 | 2009-01-05 | 2009-01-05 |
| Insider trade | 4 | 2009-01-05 | 2009-01-05 |
| Insider trade | 4 | 2009-01-05 | 2009-01-05 |
| Insider trade | 4 | 2009-01-05 | 2009-01-05 |
| Insider trade | 4 | 2009-01-05 | 2009-01-05 |
| New insider ownership | 3 | 2009-01-05 | 2009-01-01 |
| Insider trade | 4 | 2008-12-17 | 2008-12-15 |
| Insider trade | 4 | 2008-12-17 | 2008-12-15 |
| Insider trade | 4 | 2008-12-17 | 2008-12-15 |
| Insider trade | 4 | 2008-12-17 | 2008-12-15 |
| Company correspondence | CORRESP | 2008-12-08 | - |
| Major company event | 8-K | 2008-11-19 | 2008-11-19 |
| S-3ASR | - | 2008-11-14 | - |
| Company correspondence | CORRESP | 2008-11-07 | - |
| Quarterly report | 10-Q | 2008-11-05 | 2008-09-28 |
| Insider trade | 4 | 2008-11-04 | 2008-10-31 |
| Major company event | 8-K | 2008-10-31 | 2008-10-31 |
| Company correspondence | CORRESP | 2008-10-15 | - |
| Insider trade | 4 | 2008-10-09 | 2008-10-07 |
| Insider trade | 4 | 2008-09-29 | 2008-09-25 |
| Insider trade | 4 | 2008-09-24 | 2008-09-22 |
| Insider trade | 4 | 2008-09-22 | 2008-09-18 |
| Insider trade | 4 | 2008-09-18 | 2008-09-16 |