Maas, Jacob (CIK 1655513) reported 8 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-01-21). Recent activity: Buy GHC (1,000 shares), Sell GHC (377 shares), Buy GHC (1,000 shares), Sell GHC (501 shares), Buy GHC (2,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-21 | Graham Holdings Co (GHC) | Executive VP | Buy | 1,000 | $0 |
| 2026-01-21 | Graham Holdings Co (GHC) | Executive VP | Sell | 377 | $433,738 |
| 2025-10-22 | Graham Holdings Co (GHC) | Executive VP | Buy | 1,000 | $0 |
| 2025-10-22 | Graham Holdings Co (GHC) | Executive VP | Sell | 501 | $494,848 |
| 2025-08-21 | Graham Holdings Co (GHC) | Executive VP | Buy | 2,000 | $1.6M |
| 2025-08-21 | Graham Holdings Co (GHC) | Executive VP | Sell | 1,752 | $1.9M |
| 2025-01-29 | Graham Holdings Co (GHC) | Executive VP | Buy | 1,000 | $0 |
| 2025-01-29 | Graham Holdings Co (GHC) | Executive VP | Sell | 438 | $402,198 |
Source: SEC Form 4 filings · as of 2026-01-21