Macrogenics's three largest insider shareholders as of March 23, 2026 are Target N V Biotech (TenPercentOwner, 9.93Mn shares), Scott Koenig (Director, 867.24K shares), Scott Koenig (President And Ceo, 427.48K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Target N V Biotech | 9,929,963 | 0 | 04 Oct, 2023 | |
| Scott Koenig | 867,240 | 0 | 17 Feb, 2026 | |
| Scott Koenig | President And Ceo | 0 | 427,480 | 09 Oct, 2024 |
| James Karrels | Svp And Cfo | 206,037 | 0 | 17 Feb, 2026 |
| Ezio Bonvini | Sr Vp, Research Cso | 145,799 | 0 | 17 Feb, 2026 |
| William K Heiden | 111,000 | 0 | 21 Aug, 2025 | |
| Eric Blasius Risser | President And Ceo | 77,169 | 0 | 17 Feb, 2026 |
| Edward Hurwitz | 44,074 | 0 | 22 May, 2025 | |
| Thomas Spitznagel | Sr Vp, Technical Ops | 38,543 | 0 | 17 Feb, 2026 |
| Jeffrey Stuart Peters | Senior Vp, Gc, And Secretary | 31,105 | 0 | 17 Feb, 2026 |
| Stephen L. Eck | Chief Medical Officer | 29,377 | 0 | 19 Feb, 2025 |
| Beth Ann Smith | Vp, Controller Treasurer | 12,781 | 0 | 17 Feb, 2026 |
| Margaret Liu | 11,000 | 0 | 22 May, 2025 | |
| David C Stump | 11,000 | 0 | 22 May, 2025 | |
| Jay Philip Siegel | 11,000 | 0 | 22 May, 2025 | |
| Federica F. O'Brien | 11,000 | 0 | 22 May, 2025 | |
| Meenu Chhabra | 11,000 | 0 | 22 May, 2025 | |
| Karen Jean Ferrante | 11,000 | 0 | 22 May, 2025 | |
| Scott Thomas Jackson | 11,000 | 0 | 22 May, 2025 | |
| Lynn Cilinski | Vp, Controller And Treasurer | 6,213 | 0 | 20 Feb, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Feb, 2026 | Thomas Spitznagel | Common Stock | A | 13,332 | - | 44,063 | D | M |
| 15 Feb, 2026 | Ezio Bonvini | Common Stock | A | 16,665 | - | 152,232 | D | M |
| 15 Feb, 2026 | James Karrels | Common Stock | A | 14,999 | - | 211,827 | D | M |
| 15 Feb, 2026 | Scott Koenig | Common Stock | A | 21,165 | $0.00 | 867,240 | D | M |
| 15 Feb, 2026 | Jeffrey Stuart Peters | Common Stock | A | 13,332 | - | 36,252 | D | M |
| 15 Feb, 2026 | Beth Ann Smith | Common Stock | A | 1,095 | - | 13,204 | D | M |
| 15 Feb, 2026 | Eric Blasius Risser | Common Stock | A | 16,665 | - | 83,602 | D | M |
| 15 Feb, 2026 | Beth Ann Smith | Common Stock | D | 423 | $1.71 | 12,781 | D | F |
| 15 Feb, 2026 | Thomas Spitznagel | Common Stock | D | 5,520 | $1.71 | 38,543 | D | F |
| 15 Feb, 2026 | Eric Blasius Risser | Common Stock | D | 6,433 | $1.71 | 77,169 | D | F |
| 15 Feb, 2026 | Ezio Bonvini | Common Stock | D | 6,433 | $1.71 | 145,799 | D | F |
| 15 Feb, 2026 | Jeffrey Stuart Peters | Common Stock | D | 5,147 | $1.71 | 31,105 | D | F |
| 15 Feb, 2026 | James Karrels | Common Stock | D | 5,790 | $1.71 | 206,037 | D | F |
| 15 Feb, 2026 | Scott Koenig | Restricted Stock Unit | D | 21,165 | $0.00 | 0 | D | M |
| 15 Feb, 2026 | Beth Ann Smith | Restricted Stock Unit | D | 1,095 | $0.00 | 0 | D | M |
| 15 Feb, 2026 | James Karrels | Restricted Stock Unit | D | 14,999 | $0.00 | 0 | D | M |
| 15 Feb, 2026 | Eric Blasius Risser | Restricted Stock Unit | D | 16,665 | $0.00 | 0 | D | M |
| 15 Feb, 2026 | Jeffrey Stuart Peters | Restricted Stock Unit | D | 13,332 | $0.00 | 0 | D | M |
| 15 Feb, 2026 | Thomas Spitznagel | Restricted Stock Unit | D | 13,332 | $0.00 | 0 | D | M |
| 15 Feb, 2026 | Ezio Bonvini | Restricted Stock Unit | D | 16,665 | $0.00 | 0 | D | M |