Insiders / Heiden William K / Activity
Activity — Heiden William K
5 moves.
| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jun 9, 2026 | Grant | ATRA Atara Biotherapeutics, Inc. Common Stock | $0 | +12K +54.08% | 34,188 0.34% of shares | low |
| May 19, 2026 | Grant | MGNX MacroGenics, Inc. Stock Option (right to buy) | — | +22K | 22,000 0.03% of shares | low |
| May 19, 2026 | Grant | MGNX MacroGenics, Inc. Restricted Stock Unit | — | +4K | 3,750 <0.01% of shares | low |
| May 18, 2026 | Exercise | MGNX MacroGenics, Inc. Restricted Stock Unit | — | -4K -100.00% | 0 0.00% of shares | low |
| May 18, 2026 | Exercise | MGNX MacroGenics, Inc. Common Stock | — | +4K +3.38% | 114,750 0.18% of shares | low |