MACROGENICS INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for MACROGENICS INC (MGNX), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are MGNX insiders buying or selling?
In the last 12 months, MACROGENICS INC insiders reported 0 open-market purchases ($0) and 1 sale ($129.1K) — net selling of $129.1K. Since January 2018, Trabud has recorded 64 Form 4 filings for MGNX: 16 buys ($38.9M) and 48 sells ($11.5M).
Source: SEC EDGAR Form 4
Key Statistics (January 2018 – Aug 20, 2026)
Total Form 4 filings
64
SEC EDGAR
Insider filers
13
Insider buys (16)
$38.9M
Insider sells (48)
$11.5M
Insider sentiment
Net buyingNet insider flow of $27.4M in net buying since January 2018, and $129.1K in net selling over the last 12 months.
Recent MGNX insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | Jeffrey Stuart Peters | Senior VP, GC, and Secretary | Sale | 31.1K | $4.15 | $129.1K | SEC ↗ |
| Aug 21, 2025 | William K Heiden | Director | Purchase | 100.0K | $1.51 | $150.5K | SEC ↗ |
| Feb 19, 2025 | Beth Ann Smith | VP, Controller & Treasurer | Sale | 423 | $2.56 | $1.1K | SEC ↗ |
| Apr 8, 2024 | Jeffrey Stuart Peters | Senior VP and General Counsel | Sale | 51.4K | $15.55 | $799.1K | SEC ↗ |
| Mar 8, 2024 | Jeffrey Stuart Peters | Senior VP and General Counsel | Sale | 19.6K | $21.50 | $421.9K | SEC ↗ |
| Mar 6, 2024 | Eric Blasius Risser | Chief Operating Officer | Sale | 41.2K | $19.76 | $813.5K | SEC ↗ |
| Mar 6, 2024 | Thomas Spitznagel | Sr VP, Technical Ops | Sale | 10.0K | $20.00 | $200.0K | SEC ↗ |
| Mar 6, 2024 | James Karrels | SVP, CFO and Secretary | Sale | 30.0K | $20.50 | $615.0K | SEC ↗ |
| Feb 28, 2024 | Jeffrey Stuart Peters | Senior VP and General Counsel | Sale | 16.1K | $17.22 | $277.7K | SEC ↗ |
| Feb 7, 2024 | Ezio Bonvini | Sr VP, Research & CSO | Sale | 3.3K | $18.00 | $60.0K | SEC ↗ |
| Feb 7, 2024 | Jeffrey Stuart Peters | Senior VP and General Counsel | Sale | 76.3K | $16.50 | $1.3M | SEC ↗ |
| Feb 2, 2024 | Ezio Bonvini | Sr VP, Research & CSO | Sale | 13.3K | $15.00 | $199.7K | SEC ↗ |
| Jan 22, 2024 | Ezio Bonvini | Sr VP, Research & CSO | Sale | 13.3K | $12.00 | $159.8K | SEC ↗ |
| Dec 21, 2023 | Ezio Bonvini | Sr VP, Research & CSO | Sale | 18.9K | $10.08 | $190.3K | SEC ↗ |
| Oct 4, 2023 | V N Biotech Target | 10% Owner | Purchase | 150.0K | $4.46 | $669.6K | SEC ↗ |
| Sep 11, 2023 | V N Biotech Target | 10% Owner | Purchase | 200.0K | $5.26 | $1.1M | SEC ↗ |
| Sep 1, 2023 | Edward Hurwitz | Director | Purchase | 15.0K | $4.91 | $73.7K | SEC ↗ |
| Mar 14, 2023 | Jeffrey Stuart Peters | Senior VP and General Counsel | Sale | 5.4K | $6.03 | $32.4K | SEC ↗ |
| Feb 16, 2023 | V N Biotech Target | 10% Owner | Purchase | 500.0K | $5.07 | $2.5M | SEC ↗ |
| Jan 23, 2023 | V N Biotech Target | 10% Owner | Purchase | 150.0K | $5.30 | $794.9K | SEC ↗ |
| Dec 28, 2022 | V N Biotech Target | 10% Owner | Purchase | 400.0K | $5.75 | $2.3M | SEC ↗ |
| Nov 25, 2022 | V N Biotech Target | 10% Owner | Purchase | 300.0K | $5.96 | $1.8M | SEC ↗ |
| Oct 25, 2022 | V N Biotech Target | 10% Owner | Purchase | 500.0K | $4.50 | $2.2M | SEC ↗ |
| Oct 21, 2022 | V N Biotech Target | 10% Owner | Purchase | 454.4K | $3.89 | $1.8M | SEC ↗ |
| Jun 17, 2022 | James Karrels | SVP, CFO and Secretary | Purchase | 40.0K | $2.47 | $98.8K | SEC ↗ |
Showing the 25 most recent of 64 Form 4 filings for MACROGENICS INC.
Most active MGNX insiders
- Eric Blasius Risser19 filings
- V N Biotech Target13 filings
- Jeffrey Stuart Peters9 filings
- Ezio Bonvini6 filings
- Thomas Spitznagel6 filings
Ask anything about MGNX insider activity
Use Trabud's AI agent to query MACROGENICS INC's Form 4 history in plain English — "Show me MGNX CEO purchases this year" or compare it against any other ticker.
Open the AI agentMGNX insider trading FAQ
Are MACROGENICS INC insiders buying or selling?
In the last 12 months, MACROGENICS INC insiders reported 0 open-market purchases ($0) and 1 sale ($129.1K) — net selling of $129.1K. Since January 2018, Trabud has recorded 64 Form 4 filings for MGNX: 16 buys ($38.9M) and 48 sells ($11.5M). Over the full record that is net buying of $27.4M.
How many insiders trade MGNX stock?
13 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for MACROGENICS INC. The most recent filing was accepted on Aug 20, 2026.
Where does Trabud get MGNX insider trading data?
All MGNX insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.