Insiders / Markell Jack A.
Markell Jack A.
CIK 1705859personinsider
Companies
2
First seen
Jan 5, 2026
Last activity
Apr 2, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Rush Street Interactive, Inc. · RSI | 20,789 | — |
| Graham Holdings Co · GHC | 41 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Graham Holdings Co | Class B Common Stock | 41 |
| Rush Street Interactive, Inc. | Class A Common Stock | 20,789 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jan 2, 2026 | Grant | GHC Graham Holdings Co Class B Common Stock | $8.7K | +8 +32.00% | 33 <0.01% of shares | low |
| Apr 1, 2026 | Grant | GHC Graham Holdings Co Class B Common Stock | $8.5K | +8 +24.24% | 41 <0.01% of shares | low |
| Mar 14, 2026 | Grant | RSI Rush Street Interactive, Inc. Class A Common Stock | $0 | +8K +62.15% | 20,789 <0.01% of shares | low |