Quick Takeaways
- MGNX - MACROGENICS INC has 21 insiders with reported activity on this page.
- Net insider value flow over the last year: +$150,515.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 21 Insiders of MACROGENICS INC
- Symbol
- MGNX on Nasdaq
- Location
- Rockville, MD
What Changed
- Buy value: $150,515; sell value: $0.
- Net share flow: +100,000.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$150,515.
Buys
$150,515
Shares: 100,000
Insiders: 1
Sells
$0
Shares: 0
Insiders: 0
Net
+$150,515
Shares: +100,000
Insiders: 1
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 100,000 | 0 | $150,515 | $0 | +$150,515 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
MACROGENICS INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| BIOTECH TARGET N V | 10%+ Owner | $119,159,556 | Mixed | 02 Oct 2023 | ||
| Scott Koenig | Director | $1,678,069 | Mixed | 15 Feb 2026 | ||
| Lynn Cilinski | VP, Controller and Treasurer | $1,163,583 | Mixed | 15 Feb 2024 | ||
| Stephen L. Eck | Chief Medical Officer | $698,476 | Mixed | 15 Feb 2025 | ||
| James Karrels | SVP and CFO | $390,720 | Mixed | 12 Feb 2026 | ||
| Edward Hurwitz | Director | $364,797 | Mixed | 20 May 2025 | ||
| William K. Heiden | Director | $332,865 | +$150,515 | +83% | Mixed | 19 Aug 2025 |
| David C. Stump | Director | $305,595 | Mixed | 20 May 2025 | ||
| Scott Thomas Jackson | Director | $305,595 | Mixed | 20 May 2025 | ||
| Karen Jean Ferrante | Director | $305,595 | Mixed | 20 May 2025 | ||
| Ezio Bonvini | Sr VP, Research & CSO | $291,978 | Mixed | 12 Feb 2026 | ||
| Federica F. O'Brien | Director | $248,560 | Mixed | 20 May 2025 | ||
| Meenu Chhabra | Director | $228,560 | Mixed | 20 May 2025 | ||
| Margaret Liu | Director | $198,510 | Mixed | 20 May 2025 | ||
| Jay Philip Siegel | Director | $198,510 | Mixed | 20 May 2025 | ||
| Eric Blasius Risser | President and CEO, Director | $174,620 | Mixed | 12 Feb 2026 | ||
| Thomas Spitznagel | Sr VP, Technical Ops | $100,038 | Mixed | 12 Feb 2026 | ||
| Jeffrey Stuart Peters | Senior VP, GC, and Secretary | $87,319 | Mixed | 12 Feb 2026 | ||
| Beth Ann Smith | VP, Controller & Treasurer | $24,658 | Mixed | 12 Feb 2026 | ||
| Kenneth Galbraith | Director | $22,650 | Mixed | 13 May 2021 | ||
| Paulo F. Costa | Director | $22,650 | Mixed | 13 May 2021 |
Top shareholders of MACROGENICS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BIOTECH TARGET N V |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
9,929,963
|
$119,159,556 | — | 02 Oct 2023 | |
| ARMISTICE CAPITAL, LLC |
13D/G
13F
|
Company |
10%
|
6,324,000
|
$12,205,320 | +$54,040 | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
6.7%
|
4,226,941
|
$6,805,375 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
4.6%
|
2,908,631
|
$4,682,896 | — | 31 Dec 2025 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
4%
|
2,518,410
|
$4,047,000 | — | 31 Dec 2025 | |
| WASATCH ADVISORS LP |
13D/G
13F
|
Company |
3.1%
|
1,950,287
|
$3,276,482 | -$2,584,186 | 30 Sep 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
|
Company |
2.7%
from 13D/G
|
1,974,480
|
$3,178,913 | — | 31 Dec 2025 | |
| Jefferies Financial Group Inc. |
13F
|
Company |
2.9%
|
1,841,172
|
$2,964,287 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
2.9%
|
1,837,720
|
$2,958,729 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13D/G
13F
|
Company |
2.9%
|
1,813,695
|
$2,194,571 | $0 | 30 Jun 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
2%
|
1,284,563
|
$2,068,147 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
2%
|
1,254,923
|
$2,020,426 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
1.9%
|
1,195,000
|
$1,923,950 | — | 31 Dec 2025 | |
| Scott Koenig |
3/4/5
|
Director |
1.4%
|
867,240
mixed-class rows
|
$1,678,069 | — | 15 Feb 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
1.6%
|
1,035,153
|
$1,666,596 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1.6%
|
999,474
|
$1,609,153 | — | 31 Dec 2025 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
1.4%
|
901,057
|
$1,450,702 | — | 31 Dec 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
1.3%
|
818,820
|
$1,318,300 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.2%
|
756,647
|
$1,218,201 | — | 31 Dec 2025 | |
| Lynn Cilinski |
3/4/5
|
VP, Controller and Treasurer |
—
mixed-class rows
|
64,545
mixed-class rows
|
$1,163,583 | — | 15 Feb 2024 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1%
|
655,300
|
$1,055,444 | — | 31 Dec 2025 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.81%
|
511,004
|
$823,000 | — | 31 Dec 2025 | |
| Affinity Asset Advisors, LLC |
13F
|
Company |
0.77%
|
484,308
|
$779,736 | — | 31 Dec 2025 | |
| Stephen L. Eck |
3/4/5
|
Chief Medical Officer |
—
mixed-class rows
|
192,372
mixed-class rows
|
$698,476 | — | 15 Feb 2025 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
0.66%
|
420,000
|
$676,000 | — | 31 Dec 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.49%
|
312,424
|
$503,003 | — | 31 Dec 2025 | |
| PINNACLE ASSOCIATES LTD |
13F
|
Company |
0.46%
|
292,696
|
$471,241 | — | 31 Dec 2025 | |
| Universal- Beteiligungs- und Servicegesellschaft mbH |
13F
|
Individual |
0.47%
|
300,000
|
$468,000 | — | 31 Dec 2025 | |
| Vestal Point Capital, LP |
13F
|
Company |
0.44%
|
280,000
|
$450,800 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.43%
|
274,587
|
$442,085 | — | 31 Dec 2025 | |
| Quadrature Capital Ltd |
13F
|
Company |
0.42%
|
265,465
|
$427,399 | — | 31 Dec 2025 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.39%
|
249,157
|
$401,143 | — | 31 Dec 2025 | |
| James Karrels |
3/4/5
|
SVP and CFO |
—
mixed-class rows
|
381,037
mixed-class rows
|
$390,720 | — | 12 Feb 2026 | |
| XTX Topco Ltd |
13F
|
Company |
0.38%
|
240,327
|
$386,926 | — | 31 Dec 2025 | |
| Edward Hurwitz |
3/4/5
|
Director |
—
mixed-class rows
|
76,324
mixed-class rows
|
$364,797 | — | 20 May 2025 | |
| Amundi |
13F
|
Individual |
0.34%
|
214,278
|
$344,988 | — | 31 Dec 2025 | |
| William K. Heiden |
3/4/5
|
Director |
—
mixed-class rows
|
136,750
mixed-class rows
|
$332,865 | +$150,515 | 19 Aug 2025 | |
| MACKENZIE FINANCIAL CORP |
13F
|
Company |
0.33%
|
207,879
|
$323,653 | — | 31 Dec 2025 | |
| HRT FINANCIAL LP |
13F
|
Company |
0.3%
|
190,095
|
$306,000 | — | 31 Dec 2025 | |
| David C. Stump |
3/4/5
|
Director |
—
mixed-class rows
|
43,250
mixed-class rows
|
$305,595 | — | 20 May 2025 | |
| Karen Jean Ferrante |
3/4/5
|
Director |
—
mixed-class rows
|
43,250
mixed-class rows
|
$305,595 | — | 20 May 2025 | |
| Scott Thomas Jackson |
3/4/5
|
Director |
—
mixed-class rows
|
43,250
mixed-class rows
|
$305,595 | — | 20 May 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.3%
|
187,775
|
$302,099 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.29%
|
181,706
|
$292,546 | — | 31 Dec 2025 | |
| Ezio Bonvini |
3/4/5
|
Sr VP, Research & CSO |
—
mixed-class rows
|
364,549
mixed-class rows
|
$291,978 | — | 12 Feb 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.25%
|
161,016
|
$259,236 | — | 31 Dec 2025 | |
| CANADA PENSION PLAN INVESTMENT BOARD |
13F
|
Company |
0.25%
|
155,200
|
$249,872 | — | 31 Dec 2025 | |
| Federica F. O'Brien |
3/4/5
|
Director |
—
mixed-class rows
|
108,211
mixed-class rows
|
$248,560 | — | 20 May 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.24%
|
152,672
|
$245,802 | — | 31 Dec 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.24%
|
150,061
|
$241,598 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for MACROGENICS INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Ezio Bonvini | MGNX | Common Stock | Tax liability | -4.23% | -6,433 | 145,799 | 15 Feb 2026 | Direct | ||
| Ezio Bonvini | MGNX | Common Stock | Options Exercise | 12.3% | 16,665 | 152,232 | 15 Feb 2026 | Direct | ||
| Ezio Bonvini | MGNX | Restricted Stock Unit | Options Exercise | -100% | -16,665 | 0 | 15 Feb 2026 | Direct | ||
| Beth Ann Smith | MGNX | Common Stock | Tax liability | -3.2% | -423 | 12,781 | 15 Feb 2026 | Direct | ||
| Beth Ann Smith | MGNX | Common Stock | Options Exercise | 9.04% | 1,095 | 13,204 | 15 Feb 2026 | Direct | ||
| Beth Ann Smith | MGNX | Restricted Stock Unit | Options Exercise | -100% | -1,095 | 0 | 15 Feb 2026 | Direct | ||
| James Karrels | MGNX | Common Stock | Tax liability | -2.73% | -5,790 | 206,037 | 15 Feb 2026 | Direct | ||
| James Karrels | MGNX | Common Stock | Options Exercise | 7.62% | 14,999 | 211,827 | 15 Feb 2026 | Direct | ||
| James Karrels | MGNX | Restricted Stock Unit | Options Exercise | -100% | -14,999 | 0 | 15 Feb 2026 | Direct | ||
| Jeffrey Stuart Peters | MGNX | Common Stock | Tax liability | -14.2% | -5,147 | 31,105 | 15 Feb 2026 | Direct | ||
| Jeffrey Stuart Peters | MGNX | Common Stock | Options Exercise | 58.2% | 13,332 | 36,252 | 15 Feb 2026 | Direct | ||
| Jeffrey Stuart Peters | MGNX | Restricted Stock Unit | Options Exercise | -100% | -13,332 | 0 | 15 Feb 2026 | Direct | ||
| Thomas Spitznagel | MGNX | Common Stock | Tax liability | -12.5% | -5,520 | 38,543 | 15 Feb 2026 | Direct | ||
| Thomas Spitznagel | MGNX | Common Stock | Options Exercise | 43.4% | 13,332 | 44,063 | 15 Feb 2026 | Direct | ||
| Thomas Spitznagel | MGNX | Restricted Stock Unit | Options Exercise | -100% | -13,332 | 0 | 15 Feb 2026 | Direct | ||
| Eric Blasius Risser | MGNX | Common Stock | Tax liability | -7.69% | -6,433 | 77,169 | 15 Feb 2026 | Direct | ||
| Eric Blasius Risser | MGNX | Common Stock | Options Exercise | 24.9% | 16,665 | 83,602 | 15 Feb 2026 | Direct | ||
| Eric Blasius Risser | MGNX | Restricted Stock Unit | Options Exercise | -100% | -16,665 | 0 | 15 Feb 2026 | Direct | ||
| Scott Koenig | MGNX | Common Stock | Options Exercise | 2.5% | 21,165 | 867,240 | 15 Feb 2026 | Direct | ||
| Scott Koenig | MGNX | Restricted Stock Unit | Options Exercise | -100% | -21,165 | 0 | 15 Feb 2026 | Direct | ||
| Ezio Bonvini | MGNX | Employee Stock Option (right to buy) | Award | 187,500 | 187,500 | 12 Feb 2026 | Direct | |||
| Ezio Bonvini | MGNX | Restricted Stock Unit | Award | 31,250 | 31,250 | 12 Feb 2026 | Direct | |||
| Beth Ann Smith | MGNX | Employee Stock Option (right to buy) | Award | 93,750 | 93,750 | 12 Feb 2026 | Direct | |||
| Beth Ann Smith | MGNX | Restricted Stock Unit | Award | 15,625 | 15,625 | 12 Feb 2026 | Direct | |||
| James Karrels | MGNX | Restricted Stock Unit | Award | 25,000 | 25,000 | 12 Feb 2026 | Direct | |||
| James Karrels | MGNX | Employee Stock Option (right to buy) | Award | 150,000 | 150,000 | 12 Feb 2026 | Direct | |||
| Jeffrey Stuart Peters | MGNX | Restricted Stock Unit | Award | 25,000 | 25,000 | 12 Feb 2026 | Direct | |||
| Jeffrey Stuart Peters | MGNX | Employee Stock Option (right to buy) | Award | 150,000 | 150,000 | 12 Feb 2026 | Direct | |||
| Thomas Spitznagel | MGNX | Employee Stock Option (right to buy) | Award | 150,000 | 150,000 | 12 Feb 2026 | Direct | |||
| Thomas Spitznagel | MGNX | Restricted Stock Unit | Award | 25,000 | 25,000 | 12 Feb 2026 | Direct | |||
| Eric Blasius Risser | MGNX | Employee Stock Option (right to buy) | Award | 595,000 | 595,000 | 12 Feb 2026 | Direct | |||
| Eric Blasius Risser | MGNX | Restricted Stock Unit | Award | 100,000 | 100,000 | 12 Feb 2026 | Direct | |||
| Scott Koenig | MGNX | Common Stock | Options Exercise | 1.91% | 15,831 | 846,075 | 08 Feb 2026 | Direct | ||
| Scott Koenig | MGNX | Restricted Stock Unit | Options Exercise | -50% | -15,831 | 15,832 | 08 Feb 2026 | Direct | ||
| Thomas Spitznagel | MGNX | Common Stock | Tax liability | -9.39% | -3,186 | 30,731 | 08 Feb 2026 | Direct | ||
| Thomas Spitznagel | MGNX | Common Stock | Options Exercise | 36.1% | 8,999 | 33,917 | 08 Feb 2026 | Direct | ||
| Thomas Spitznagel | MGNX | Restricted Stock Unit | Options Exercise | -50% | -8,999 | 9,000 | 08 Feb 2026 | Direct | ||
| Beth Ann Smith | MGNX | Common Stock | Tax liability | -4.81% | -612 | 12,109 | 08 Feb 2026 | Direct | ||
| Beth Ann Smith | MGNX | Common Stock | Options Exercise | 14.2% | 1,583 | 12,721 | 08 Feb 2026 | Direct | ||
| Beth Ann Smith | MGNX | Restricted Stock Unit | Options Exercise | -50% | -1,583 | 1,584 | 08 Feb 2026 | Direct | ||
| Eric Blasius Risser | MGNX | Common Stock | Tax liability | -6.05% | -4,311 | 66,937 | 08 Feb 2026 | Direct | ||
| Eric Blasius Risser | MGNX | Common Stock | Options Exercise | 18.6% | 11,166 | 71,248 | 08 Feb 2026 | Direct | ||
| Eric Blasius Risser | MGNX | Restricted Stock Unit | Options Exercise | -50% | -11,166 | 11,166 | 08 Feb 2026 | Direct | ||
| Jeffrey Stuart Peters | MGNX | Common Stock | Tax liability | -13.2% | -3,474 | 22,920 | 08 Feb 2026 | Direct | ||
| Jeffrey Stuart Peters | MGNX | Common Stock | Options Exercise | 51.7% | 8,999 | 26,394 | 08 Feb 2026 | Direct | ||
| Jeffrey Stuart Peters | MGNX | Restricted Stock Unit | Options Exercise | -50% | -8,999 | 9,000 | 08 Feb 2026 | Direct | ||
| James Karrels | MGNX | Common Stock | Tax liability | -1.92% | -3,860 | 196,828 | 08 Feb 2026 | Direct | ||
| James Karrels | MGNX | Common Stock | Options Exercise | 5.24% | 9,999 | 200,688 | 08 Feb 2026 | Direct | ||
| James Karrels | MGNX | Restricted Stock Unit | Options Exercise | -50% | -9,999 | 9,999 | 08 Feb 2026 | Direct | ||
| Ezio Bonvini | MGNX | Common Stock | Tax liability | -3.08% | -4,311 | 135,567 | 08 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.