The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 19, 2026 | O'Brien Federica F. | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | O'Brien Federica F. | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Stump David C | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Stump David C | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Chhabra Meenu | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Chhabra Meenu | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Liu Margaret | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Liu Margaret | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Heiden William K | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Heiden William K | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Jackson Scott Thomas | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Hurwitz Edward | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Hurwitz Edward | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Ferrante Karen Jean | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Ferrante Karen Jean | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Jackson Scott Thomas | Director | Grant(A) | 22K | — | $0 |
| May 19, 2026 | Koenig Scott | Director | Grant(A) | 4K | — | $0 |
| May 19, 2026 | Koenig Scott | Director | Grant(A) | 22K | — | $0 |
| May 18, 2026 | O'Brien Federica F. | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | O'Brien Federica F. | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Stump David C | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Stump David C | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Siegel Jay Philip | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Siegel Jay Philip | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Chhabra Meenu | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Chhabra Meenu | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Liu Margaret | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Liu Margaret | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Heiden William K | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Heiden William K | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Jackson Scott Thomas | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Jackson Scott Thomas | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Hurwitz Edward | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Hurwitz Edward | Director | Option exercise(M) | 4K | — | $0 |
| May 18, 2026 | Ferrante Karen Jean | Director | Option exercise(M) | 4K | — | — |
| May 18, 2026 | Ferrante Karen Jean | Director | Option exercise(M) | 4K | — | $0 |
| Feb 15, 2026 | Karrels James | SVP and CFO | Option exercise(M) | 15K | — | — |
| Feb 15, 2026 | Karrels James | SVP and CFO | Tax withholding(F) | 6K | $1.71 | $10K |
| Feb 15, 2026 | Karrels James | SVP and CFO | Option exercise(M) | 15K | — | $0 |
| Feb 15, 2026 | Koenig Scott | Director | Option exercise(M) | 21K | — | $0 |
| Feb 15, 2026 | Koenig Scott | Director | Option exercise(M) | 21K | — | $0 |
| Feb 15, 2026 | Risser Eric Blasius | President and CEO, Director | Option exercise(M) | 17K | — | — |
| Feb 15, 2026 | Risser Eric Blasius | President and CEO, Director | Tax withholding(F) | 6K | $1.71 | $11K |
| Feb 15, 2026 | Risser Eric Blasius | President and CEO, Director | Option exercise(M) | 17K | — | $0 |
| Feb 15, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Option exercise(M) | 17K | — | — |
| Feb 15, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding(F) | 6K | $1.71 | $11K |
| Feb 15, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Option exercise(M) | 17K | — | $0 |
| Feb 15, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Option exercise(M) | 13K | — | — |
| Feb 15, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding(F) | 6K | $1.71 | $9K |
| Feb 15, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Option exercise(M) | 13K | — | $0 |
| Feb 15, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Option exercise(M) | 13K | — | — |
| Feb 15, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Tax withholding(F) | 5K | $1.71 | $9K |
| Feb 15, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Option exercise(M) | 13K | — | $0 |
| Feb 15, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Tax withholding(F) | 423 | $1.71 | $723 |
| Feb 15, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Option exercise(M) | 1K | — | — |
| Feb 15, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Option exercise(M) | 1K | — | $0 |
| Feb 12, 2026 | Karrels James | SVP and CFO | Grant(A) | 150K | — | $0 |
| Feb 12, 2026 | Karrels James | SVP and CFO | Grant(A) | 25K | — | $0 |
| Feb 12, 2026 | Risser Eric Blasius | President and CEO, Director | Grant(A) | 100K | — | $0 |
| Feb 12, 2026 | Risser Eric Blasius | President and CEO, Director | Grant(A) | 595K | — | $0 |
| Feb 12, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Grant(A) | 188K | — | $0 |
| Feb 12, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Grant(A) | 31K | — | $0 |
| Feb 12, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Grant(A) | 25K | — | $0 |
| Feb 12, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Grant(A) | 150K | — | $0 |
| Feb 12, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Grant(A) | 150K | — | $0 |
| Feb 12, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Grant(A) | 25K | — | $0 |
| Feb 12, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Grant(A) | 94K | — | $0 |
| Feb 12, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Grant(A) | 16K | — | $0 |
| Feb 8, 2026 | Karrels James | SVP and CFO | Option exercise(M) | 10K | — | — |
| Feb 8, 2026 | Karrels James | SVP and CFO | Tax withholding(F) | 4K | $1.81 | $7K |
| Feb 8, 2026 | Karrels James | SVP and CFO | Option exercise(M) | 10K | — | $0 |
| Feb 8, 2026 | Koenig Scott | Director | Option exercise(M) | 16K | — | — |
| Feb 8, 2026 | Koenig Scott | Director | Option exercise(M) | 16K | — | $0 |
| Feb 8, 2026 | Risser Eric Blasius | President and CEO, Director | Tax withholding(F) | 4K | $1.81 | $8K |
| Feb 8, 2026 | Risser Eric Blasius | President and CEO, Director | Option exercise(M) | 11K | — | — |
| Feb 8, 2026 | Risser Eric Blasius | President and CEO, Director | Option exercise(M) | 11K | — | $0 |
| Feb 8, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Option exercise(M) | 11K | — | — |
| Feb 8, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding(F) | 4K | $1.81 | $8K |
| Feb 8, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Option exercise(M) | 11K | — | $0 |
| Feb 8, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Option exercise(M) | 9K | — | — |
| Feb 8, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding(F) | 3K | $1.81 | $6K |
| Feb 8, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Option exercise(M) | 9K | — | $0 |
| Feb 8, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Tax withholding(F) | 3K | $1.81 | $6K |
| Feb 8, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Option exercise(M) | 9K | — | — |
| Feb 8, 2026 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Option exercise(M) | 9K | — | $0 |
| Feb 8, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Tax withholding(F) | 612 | $1.81 | $1K |
| Feb 8, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Option exercise(M) | 2K | — | — |
| Feb 8, 2026 | Smith Beth Ann | VP, Controller & Treasurer | Option exercise(M) | 2K | — | $0 |
| Feb 7, 2026 | Karrels James | SVP and CFO | Tax withholding(F) | 2K | $1.81 | $4K |
| Feb 7, 2026 | Karrels James | SVP and CFO | Option exercise(M) | 6K | — | — |
| Feb 7, 2026 | Karrels James | SVP and CFO | Option exercise(M) | 6K | — | $0 |
| Feb 7, 2026 | Risser Eric Blasius | President and CEO, Director | Option exercise(M) | 7K | — | — |
| Feb 7, 2026 | Risser Eric Blasius | President and CEO, Director | Tax withholding(F) | 3K | $1.81 | $5K |
| Feb 7, 2026 | Risser Eric Blasius | President and CEO, Director | Option exercise(M) | 7K | — | $0 |
| Feb 7, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding(F) | 3K | $1.81 | $5K |
| Feb 7, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Option exercise(M) | 7K | — | — |
| Feb 7, 2026 | Bonvini Ezio | Sr VP, Research & CSO | Option exercise(M) | 7K | — | $0 |
| Feb 7, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Option exercise(M) | 6K | — | — |
| Feb 7, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding(F) | 2K | $1.81 | $4K |
| Feb 7, 2026 | Spitznagel Thomas | Sr VP, Technical Ops | Option exercise(M) | 6K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2019-12-30 → 2026-08-06. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for MGNX