Thomas Spitznagel
CIK 1675464 · Sr VP, Technical Ops · last filed 2026-02-17
Thomas Spitznagel is a Sr VP, Technical Ops who has filed 21 SEC Form 4 insider transactions across 1 company since 2016. The most recent filing, for MGNX, was dated Feb 17, 2026. Across all open-market trades the lifetime net is −$924.0K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $152.6K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$152.6K
1
21
-$924.0K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MGNX | Sr VP, Technical Ops | 38,543 | $3.96 | $152.6K | -$924.0K | 21 | 2026-02-17 |
Recent Filings
21 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-02-17 | MGNX | Mixed | +7,812 | -$9.4K | EDGAR |
| 2026-02-10 | MGNX | Mixed | +9,329 | -$10.3K | EDGAR |
| 2025-08-19 | MGNX | Grant (A) | — | $0 | EDGAR |
| 2025-02-19 | MGNX | Mixed | +7,812 | -$14.1K | EDGAR |
| 2025-02-11 | MGNX | Mixed | +5,274 | -$9.7K | EDGAR |
| 2024-03-06 | MGNX | Mixed | — | -$85.0K | EDGAR |
| 2024-02-20 | MGNX | Mixed | +8,316 | -$87.3K | EDGAR |
| 2024-02-12 | MGNX | Grant (A) | — | $0 | EDGAR |
| 2023-02-17 | MGNX | Grant (A) | — | $0 | EDGAR |
| 2022-02-24 | MGNX | Grant (A) | — | $0 | EDGAR |