Thomas Spitznagel serves as Executive at MACROGENICS INC, where they oversee executive responsibilities. Since joining the company, Thomas Spitznagel has executed 20 insider transactions totaling $924.0K, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 8, 2026 involved exercising options for 8,999 shares valued at $0.
Thomas Spitznagel currently holds 9,000 shares of MACROGENICS INC (MGNX), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Thomas Spitznagel has been a net seller of MGNX stock. They have purchased $0 and sold $924.0K worth of shares.
Thomas Spitznagel's most recent insider trade was on Feb 8, 2026, when they sold 8,999 shares at $0.00 per share.
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| $1.81 |
| Discretionary |
| Feb 8, 2026 | MGNX | $0 | Option Exercise | 8,999 | $N/A | Discretionary |
| Feb 7, 2026 | MGNX | $0 | Option Exercise | 6,001 | $N/A | Discretionary |
| Feb 7, 2026 | MGNX | $4.5K | Payment | 2,485 | $1.81 | Discretionary |
| Feb 7, 2026 | MGNX | $0 | Option Exercise | 6,001 | $N/A | Discretionary |
| Mar 4, 2024 | MGNX | $200.0K | Sale | 10,000 | $20.00 | Planned |
| Mar 4, 2024 | MGNX | $115.0K | Option Exercise | 10,000 | $11.50 | Planned |
| Feb 15, 2024 | MGNX | $0 | Option Exercise | 13,336 | $N/A | Discretionary |
| Feb 15, 2024 | MGNX | $87.3K | Payment | 5,020 | $17.40 | Discretionary |
| Jul 16, 2021 | MGNX | $37.5K | Option Exercise | 5,000 | $7.51 | Discretionary |
| Jul 16, 2021 | MGNX | $125.0K | Sale | 5,000 | $25.01 | Discretionary |
| Apr 15, 2021 | MGNX | $154.6K | Sale | 5,000 | $30.91 | Discretionary |
| Apr 15, 2021 | MGNX | $37.5K | Option Exercise | 5,000 | $7.51 | Discretionary |
| Aug 20, 2020 | MGNX | $201.5K | Sale | 7,500 | $26.87 | Discretionary |
| Aug 20, 2020 | MGNX | $56.3K | Option Exercise | 7,500 | $7.51 | Discretionary |
| May 20, 2020 | MGNX | $189.8K | Sale | 7,500 | $25.30 | Discretionary |
| May 20, 2020 | MGNX | $56.3K | Option Exercise | 7,500 | $7.51 | Discretionary |
| Feb 6, 2019 | MGNX | $13.3K | Option Exercise | 1,770 | $7.51 | Discretionary |
| Feb 6, 2019 | MGNX | $53.1K | Sale | 1,770 | $30.00 | Discretionary |