O'Shaughnessy Timothy J (CIK 1621362) reported 10 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-14). Recent activity: Sell GHC (4,211 shares), Sell GHC (5,600 shares), Sell GHC (400 shares), Buy GHC (7,582 shares), Sell GHC (6,839 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | Graham Holdings Co (GHC) | President and CEO | Sell | 4,211 | $0 |
| 2026-05-28 | Graham Holdings Co (GHC) | President and CEO | Sell | 5,600 | $0 |
| 2026-05-28 | Graham Holdings Co (GHC) | President and CEO | Sell | 400 | $0 |
| 2025-11-13 | Graham Holdings Co (GHC) | President and CEO | Buy | 7,582 | $6.6M |
| 2025-11-13 | Graham Holdings Co (GHC) | President and CEO | Sell | 6,839 | $7.4M |
| 2025-10-09 | Graham Holdings Co (GHC) | President and CEO | Sell | 2,800 | $0 |
| 2025-09-30 | Graham Holdings Co (GHC) | President and CEO | Buy | 7,580 | $6.6M |
| 2025-09-30 | Graham Holdings Co (GHC) | President and CEO | Sell | 6,568 | $7.8M |
| 2025-08-22 | Graham Holdings Co (GHC) | President and CEO | Buy | 7,580 | $6.6M |
| 2025-08-22 | Graham Holdings Co (GHC) | President and CEO | Sell | 6,878 | $7.4M |
Source: SEC Form 4 filings · as of 2026-08-14