O'Shaughnessy Laura (CIK 1813477) reported 12 SEC Form 4 insider transactions across 3 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 AYI (1,000 shares), Buy GHC (7,582 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-14 | Graham Holdings Co (GHC) | 10% Owner | Sell | 4,211 | $0 |
| 2026-05-28 | Graham Holdings Co (GHC) | 10% Owner | Sell | 5,600 | $0 |
| 2026-05-28 | Graham Holdings Co (GHC) | 10% Owner | Sell | 400 | $0 |
| 2026-04-10 | ACUITY INC. (DE) (AYI) | Director | Buy | 1,000 | $282,980 |
| 2025-11-13 | Graham Holdings Co (GHC) | 10% Owner | Buy | 7,582 | $6.6M |
| 2025-11-13 | Graham Holdings Co (GHC) | 10% Owner | Sell | 6,839 | $7.4M |
| 2025-10-09 | Graham Holdings Co (GHC) | 10% Owner | Sell | 2,800 | $0 |
| 2025-09-30 | Graham Holdings Co (GHC) | 10% Owner | Buy | 7,580 | $6.6M |
| 2025-09-30 | Graham Holdings Co (GHC) | 10% Owner | Sell | 6,568 | $7.8M |
| 2025-08-22 | Graham Holdings Co (GHC) | 10% Owner | Buy | 7,580 | $6.6M |
| 2025-08-22 | Graham Holdings Co (GHC) | 10% Owner | Sell | 6,878 | $7.4M |
| 2025-06-16 | Vroom, Inc. (VRM) | Director | Buy | 3,796 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-08-14