Macrogenics INC
SEC CIK 1125345 · MGNX · last insider filing 2026-05-20
Directors (from insider filings)
| Name | Capacity as filed | Filings |
|---|---|---|
| O'Brien Federica F. | Director | filed 2021 - 2026 |
| Stump David C | Director | filed 2013 - 2026 |
| Hurwitz Edward | Director | filed 2013 - 2026 |
| Heiden William K | Director | filed 2022 - 2026 |
| Liu Margaret | Director | filed 2023 - 2026 |
| Chhabra Meenu | Director | filed 2023 - 2026 |
| Jackson Scott Thomas | Director | filed 2017 - 2026 |
| Koenig Scott | Director · President and CEO | filed 2013 - 2026 |
| Ferrante Karen Jean | Director | filed 2017 - 2026 |
| Siegel JAY Philip | Director | filed 2017 - 2026 |
| Risser Eric Blasius | Director · VP, Business Development | filed 2013 - 2026 |
| Costa Paulo F | Director | filed 2013 - 2021 |
| Galbraith Kenneth | Director | filed 2013 - 2021 |
| Fust Matthew K | Director | filed 2014 - 2019 |
| Oronsky Arnold L | Director | filed 2013 - 2014 |
| Nadav Eran | Director | filed 2013 - 2013 |
Officers (from insider filings)
| Name | Title as filed | Filings |
|---|---|---|
| Karrels James | VP, CFO and Secretary | filed 2013 - 2026 |
| Bonvini Ezio | Sr VP, Research & CSO | filed 2013 - 2026 |
| Spitznagel Thomas | Vice President, Development | filed 2016 - 2026 |
| Peters Jeffrey Stuart | Senior VP, GC, and Secretary | filed 2017 - 2026 |
| Smith Beth Ann | VP, Controller & Treasurer | filed 2025 - 2026 |
| Eck Stephen L. | Chief Medical Officer | filed 2020 - 2025 |
| Cilinski Lynn | VP, Controller and Treasurer | filed 2013 - 2024 |
| Wigginton Jon Marc | Sr VP, Clinical Dev. & CMO | filed 2013 - 2020 |
| Saran Atul | Sr. VP and General Counsel | filed 2014 - 2017 |
| Stein Kathryn E | Senior VP, Prd Dev & Reg Aff | filed 2013 - 2016 |
| Stewart Stanford John | V P, Clinical Oncology | filed 2013 - 2013 |
About this record
From the SEC's insider-transaction filings (Forms 3, 4 and 5). Every reporting director and officer carries a Commission-assigned identifier (CIK), so these footprints are identifier-verified - no name matching involved. Insiders file when they transact, so dates are filing dates: "last filed" never means "served until". This layer is not yet joined to the nonprofit register - identity joins ship only after independent review.
Source: SEC Insider Transactions Data Sets (Forms 3/4/5), US Federal Government public domain.