Insiders / Stump David C
Stump David C
CIK 1191235personinsider
Companies
2
First seen
May 20, 2026
Last activity
Jun 2, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| REGENXBIO Inc. · RGNX | 28,861 | — |
| MacroGenics, Inc. · MGNX | 14,750 | — |
All securities held
5 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| MacroGenics, Inc. | Common Stock | 14,750 |
| MacroGenics, Inc. | Stock Option (right to buy)Derivative | 22,000 |
| MacroGenics, Inc. | Restricted Stock UnitDerivative | 3,750 |
| REGENXBIO Inc. | Common Stock | 28,861 |
| REGENXBIO Inc. | Stock Options (Right to Buy)Derivative | 46,600 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| May 29, 2026 | Grant | RGNX REGENXBIO Inc. Common Stock | $0 | +10K +51.47% | 28,861 0.04% of shares | low |
| May 29, 2026 | Grant | RGNX REGENXBIO Inc. Stock Options (Right to Buy) | — | +47K | 46,600 0.07% 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 +34.09% | 14,750 0.02% of shares | low |