Graham Holdings Co SEC filings GHC
Graham Holdings Co has 1,006 filings in SEC EDGAR's recent list, going back to Mar 4, 2003. Its latest annual report, Form ARS, was filed on Mar 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 29, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 2, 2026 | — |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Aug 31, 2026 | Aug 28, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 13, 2026 |
| 13F-HR | Filing | Aug 14, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 13, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 26, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 26, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 26, 2026 |
| 13F-HR | Filing | May 15, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Jul 30, 2025 |
| 13F-HR | Filing | Feb 13, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 21, 2026 | Jan 16, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 29, 2025 |
| 13F-HR | Filing | Nov 14, 2025 | Sep 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Nov 13, 2025 | Nov 11, 2025 |
| 4 | Insider transaction | Oct 22, 2025 | Oct 20, 2025 |
| 4 | Insider transaction | Oct 9, 2025 | Oct 7, 2025 |
| 4 | Insider transaction | Oct 9, 2025 | Oct 7, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Aug 22, 2025 | Aug 20, 2025 |
| 4 | Insider transaction | Aug 22, 2025 | Aug 20, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 13F-HR | Filing | Aug 14, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 13F-HR | Filing | May 15, 2025 | Mar 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 29, 2025 | — |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Feb 28, 2025 | — |
| 13F-HR | Filing | Feb 14, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 29, 2025 | Jan 27, 2025 |
| 144 | Notice of proposed sale | Jan 6, 2025 | — |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Nov 14, 2024 | Nov 13, 2024 |
| 13F-HR | Filing | Nov 14, 2024 | Sep 30, 2024 |
| 4 | Insider transaction | Nov 8, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 1, 2024 |
| 4 | Insider transaction | Oct 17, 2024 | Oct 15, 2024 |
| 4 | Insider transaction | Oct 17, 2024 | Oct 15, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Sep 25, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 25, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 12, 2024 |
| 3 | Initial insider ownership | Sep 5, 2024 | Sep 3, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 5, 2024 | — |
| SC 13D | Ownership over 5% (active) | Sep 5, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Aug 20, 2024 | — |
| 13F-HR | Filing | Aug 14, 2024 | Jun 30, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| SC 13G | Ownership over 5% (passive) | May 30, 2024 | — |
| 4 | Insider transaction | May 29, 2024 | May 28, 2024 |
| 13F-HR | Filing | May 16, 2024 | Mar 31, 2024 |
| SC 13G | Ownership over 5% (passive) | May 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | May 10, 2024 | — |
| SC 13D | Ownership over 5% (active) | May 10, 2024 | — |
| 4/A | Form 4/a | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 14, 2024 |
| 144 | Notice of proposed sale | Mar 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 11, 2024 | — |
| 13F-HR | Filing | Feb 14, 2024 | Dec 31, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2024 | — |
| 4 | Insider transaction | Jan 3, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 2, 2024 |
| 13F-HR | Filing | Nov 14, 2023 | Sep 30, 2023 |
| 4 | Insider transaction | Nov 9, 2023 | Nov 9, 2023 |
| 4 | Insider transaction | Nov 9, 2023 | Nov 8, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Sep 12, 2023 | Sep 8, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 11, 2023 | — |
| 13F-HR | Filing | Aug 14, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jul 7, 2023 | Jul 6, 2023 |
| 4 | Insider transaction | Jul 6, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 6, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 6, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 6, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 6, 2023 | Jul 3, 2023 |
| 13F-HR | Filing | May 15, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | May 9, 2023 | May 9, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Mar 8, 2023 | Mar 7, 2023 |
| 13F-HR | Filing | Feb 14, 2023 | Dec 31, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 26, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2023 | — |
| 4 | Insider transaction | Jan 9, 2023 | Jan 9, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 3, 2023 |
| 13F-HR | Filing | Nov 15, 2022 | Sep 30, 2022 |
| 4 | Insider transaction | Oct 5, 2022 | Oct 3, 2022 |
| 4 | Insider transaction | Oct 4, 2022 | Oct 3, 2022 |
| 4 | Insider transaction | Oct 4, 2022 | Oct 3, 2022 |
| 4 | Insider transaction | Oct 4, 2022 | Oct 3, 2022 |
| 4 | Insider transaction | Oct 4, 2022 | Oct 3, 2022 |
| 3 | Initial insider ownership | Oct 3, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 16, 2022 | Sep 16, 2022 |
| 13F-HR | Filing | Aug 15, 2022 | Jun 30, 2022 |
| 4 | Insider transaction | Jul 5, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 5, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 5, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 5, 2022 | Jul 1, 2022 |
| 13F-HR | Filing | May 13, 2022 | Mar 31, 2022 |
| 4 | Insider transaction | Mar 8, 2022 | Mar 7, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| 13F-HR | Filing | Feb 14, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Feb 11, 2022 | Dec 30, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 27, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2022 | — |
| 4/A | Form 4/a | Jan 24, 2022 | Jan 19, 2022 |
| 4 | Insider transaction | Jan 21, 2022 | Jan 19, 2022 |
| 4 | Insider transaction | Dec 23, 2021 | Dec 22, 2021 |
| 4 | Insider transaction | Dec 2, 2021 | Dec 1, 2021 |
| 4 | Insider transaction | Nov 15, 2021 | Nov 11, 2021 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Educational Services (SIC 8200)
- Listed as
- GHC (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Arlington, VA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 104889
- Former names
- WASHINGTON POST CO (until Nov 18, 2013)
Other Services-Educational Services companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.