MGNX
MacroGenics, Inc.
NASDAQ · Healthcare · Biotechnology · US
$4.40
+3.53%0
Insider buys (3m)
1
Insider sells (3m)
-$129.1K
Net value (3m)
+10.1%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | Peters Jeffrey Stuart · officer: Senior VP, GC, and Secretary | Sale | 31,105 | $4.15 |
| Aug 18, 2026 | Bonvini Ezio · officer: Sr VP, Research & CSO | M-Exempt | 40,000 | $2.60 |
| May 20, 2026 | STUMP DAVID C · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | O'Brien Federica F. · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Jackson Scott Thomas · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | Koenig Scott · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Liu Margaret · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | O'Brien Federica F. · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | HEIDEN WILLIAM K · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | HURWITZ EDWARD · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | HURWITZ EDWARD · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | O'Brien Federica F. · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | STUMP DAVID C · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | Chhabra Meenu · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Jackson Scott Thomas · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Chhabra Meenu · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | STUMP DAVID C · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Ferrante Karen Jean · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Liu Margaret · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | Ferrante Karen Jean · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | Ferrante Karen Jean · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | Liu Margaret · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | SIEGEL JAY PHILIP · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | HEIDEN WILLIAM K · director | A-Award | 3,750 | $0.00 |
| May 20, 2026 | Jackson Scott Thomas · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | Koenig Scott · director | A-Award | 22,000 | $4.52 |
| May 20, 2026 | Chhabra Meenu · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | HURWITZ EDWARD · director | M-Exempt | 3,750 | $0.00 |
| May 20, 2026 | HEIDEN WILLIAM K · director | A-Award | 22,000 | $4.52 |
| Feb 17, 2026 | Karrels James · officer: SVP and CFO | A-Award | 25,000 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 32Increased 27Reduced 33Sold out 109
| Filer | Action | Shares | Filed |
|---|---|---|---|
| ARMISTICE CAPITAL, LLC | Reduced | 6,012,000 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 2,963,559 | May 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 2,794,357 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2,653,853 | May 15, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 2,544,000 | May 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 2,527,829 | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 2,401,814 | May 18, 2026 |
| MARSHALL WACE, LLP | Increased | 2,025,526 | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | New Position | 1,864,176 | May 15, 2026 |
| WASATCH ADVISORS LP | Reduced | 1,559,701 | Apr 21, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 1,208,775 | May 8, 2026 |
| BLACKROCK, INC. | Increased | 1,163,146 | May 13, 2026 |
| D. E. SHAW & CO., INC. | Increased | 1,058,424 | May 15, 2026 |
| CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. | Increased | 867,249 | May 11, 2026 |
| CITADEL ADVISORS LLC | Reduced | 840,418 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 20, 2026