Updated Jul 16, 2026 · Last SEC filing 2026-07-06
Graham Holdings Co (GHC) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-06. 3 Form 8-K material event filings were reported by GHC in the last 90 days. InsiderAlpha tracks every GHC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Services-Educational Services (SIC 8200) |
|---|---|
| SEC CIK | 0000104889 |
| Form 4 filings (90d) | 8 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Latest Form 4 filing | 2026-07-06 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| WAGONER G RICHARD JR | Director | A — Grant or award | 21 | $1,161.11 | $24K | SEC | |
| MULCAHY ANNE M | Director | A — Grant or award | 21 | $1,161.11 | $24K | SEC | |
| Davis Christopher C | Director | A — Grant or award | 23 | $1,161.11 | $27K | SEC | |
| Markell Jack A. | Director | A — Grant or award | 7 | $1,161.11 | $8K | SEC | |
| CONLEY DANIELLE Y. | Director | A — Grant or award | 19 | $1,161.11 | $22K | SEC | |
| O'Shaughnessy Timothy J | President and CEO | J — Other acquisition / disposition | 5.6K | — | — | SEC | |
| Weymouth Katharine | Director | J — Other acquisition / disposition | 6.0K | — | — | SEC | |
| O'Shaughnessy Laura | 10% Owner | J — Other acquisition / disposition | 5.6K | — | — | SEC | |
| O'Shaughnessy Laura | 10% Owner | J — Other acquisition / disposition | 400 | — | — | SEC | |
| O'Shaughnessy Timothy J | President and CEO | J — Other acquisition / disposition | 400 | — | — | SEC | |
| Davis Christopher C | Director | A — Grant or award | 25 | $1,061.70 | $27K | SEC | |
| CONLEY DANIELLE Y. | Director | A — Grant or award | 21 | $1,061.70 | $22K | SEC | |
| WAGONER G RICHARD JR | Director | A — Grant or award | 23 | $1,061.70 | $24K | SEC | |
| MULCAHY ANNE M | Director | A — Grant or award | 23 | $1,061.70 | $24K | SEC | |
| Markell Jack A. | Director | A — Grant or award | 8 | $1,061.70 | $8K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Graham Holdings Co (GHC). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| O'Shaughnessy Laura | 3 | — |
| O'Shaughnessy Timothy J | 3 | — |
| Weymouth Katharine | 2 | — |
| MULCAHY ANNE M | 1 | $24K |
| Markell Jack A. | 1 | $8K |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in GHC insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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