Markell Jack A. (CIK 1705859) reported 10 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-07-06). Recent activity: Buy GHC (7 shares), Sell RSI (3,406 shares), Buy GHC (8 shares), Buy RSI (7,968 shares), Buy GHC (8 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-06 | Graham Holdings Co (GHC) | Director | Buy | 7 | $8,128 |
| 2026-06-05 | Rush Street Interactive, Inc. (RSI) | Director | Sell | 3,406 | $86,581 |
| 2026-04-02 | Graham Holdings Co (GHC) | Director | Buy | 8 | $8,494 |
| 2026-03-17 | Rush Street Interactive, Inc. (RSI) | Director | Buy | 7,968 | $0 |
| 2026-01-05 | Graham Holdings Co (GHC) | Director | Buy | 8 | $8,729 |
| 2025-10-02 | Graham Holdings Co (GHC) | Director | Buy | 7 | $8,157 |
| 2025-07-02 | Graham Holdings Co (GHC) | Director | Buy | 9 | $8,590 |
| 2025-05-29 | Rush Street Interactive, Inc. (RSI) | Director | Buy | 10,958 | $0 |
| 2025-04-03 | Graham Holdings Co (GHC) | Director | Buy | 9 | $8,739 |
| 2025-03-20 | Rush Street Interactive, Inc. (RSI) | Director | Buy | 1,863 | $0 |
Source: SEC Form 4 filings · as of 2026-07-06