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Jeffrey Stuart Peters - OfficerOpen-market sale$129K
William K. Heiden - DirectorOpen-market purchase$77K- William K. Heiden - DirectorOpen-market purchase$74K
- Ezio Bonvini - OfficerOption exercise$21K
- Ezio Bonvini - OfficerOption exercise$21K
- Ezio Bonvini - OfficerOption exercise$104K
- Ezio Bonvini - OfficerOption exercise$104K
- Federica F. O'Brien - DirectorOption exercise3,750 sh
About MACROGENICS INC (MGNX)
The SEC lists MACROGENICS INC under CIK 0001125345, in pharmaceutical preparations. We track it alongside the rest of the Health Care sector.
MGNX Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 1 | 31,105 | $129K |
| Option exercise | 4 | 96,000 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
MGNX insider transactions (Form 4)
11542 Form 4 filings on record, the earliest from Oct 9, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Ezio Bonvini - Officer | Option exercise | Common Stock | 8,000 | $2.60 | $21K | |
| Ezio Bonvini - Officer | Option exercise | Employee Stock Option (right to buy) | 8,000 | $2.60 | $21K | |
| Jeffrey Stuart Peters - Officer | Open-market sale | Common Stock | 31,105 | $4.15 footnote F2 | $129K | |
| ||||||
| Ezio Bonvini - Officer | Option exercise | Common Stock | 40,000 | $2.60 | $104K | |
| Ezio Bonvini - Officer | Option exercise | Employee Stock Option (right to buy) | 40,000 | $2.60 | $104K | |
| Federica F. O'Brien - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Federica F. O'Brien - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Federica F. O'Brien - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| Federica F. O'Brien - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| ||||||
| Scott Thomas Jackson - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Scott Thomas Jackson - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Scott Thomas Jackson - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Scott Thomas Jackson - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| ||||||
| William K. Heiden - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| William K. Heiden - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| William K. Heiden - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| William K. Heiden - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| ||||||
| Jay Philip Siegel - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Jay Philip Siegel - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| ||||||
| Margaret Liu - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Margaret Liu - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Margaret Liu - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Margaret Liu - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| ||||||
| Meenu Chhabra - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Meenu Chhabra - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| Meenu Chhabra - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Meenu Chhabra - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| ||||||
| Edward Hurwitz - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Edward Hurwitz - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Edward Hurwitz - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Edward Hurwitz - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| ||||||
| David C. Stump - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| David C. Stump - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| David C. Stump - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| David C. Stump - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| ||||||
| Karen Jean Ferrante - Director | Option exercise | Common Stock | 3,750 | - footnote F1 | - | |
| Karen Jean Ferrante - Director | Option exercise | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Karen Jean Ferrante - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Karen Jean Ferrante - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| ||||||
 Scott Koenig - Director | Grant or award | Restricted Stock Unit | 3,750 | $0.00 | - | |
| Scott Koenig - Director | Grant or award | Stock Option (right to buy) | 22,000 | $0.00 | - | |
| Ezio Bonvini - Officer | Tax withholding / forfeiture | Common Stock | 6,433 | $1.71 | $11K | |
| Ezio Bonvini - Officer | Option exercise | Common Stock | 16,665 | - footnote F1 | - | |
| Ezio Bonvini - Officer | Option exercise | Restricted Stock Unit | 16,665 | $0.00 | - | |
| Ezio Bonvini - Officer | Grant or award | Restricted Stock Unit | 31,250 | $0.00 | - | |
| Ezio Bonvini - Officer | Grant or award | Employee Stock Option (right to buy) | 187,500 | $0.00 | - | |
| ||||||
| Beth Ann Smith - Officer | Tax withholding / forfeiture | Common Stock | 423 | $1.71 | $723 | |
| Beth Ann Smith - Officer | Option exercise | Common Stock | 1,095 | - footnote F1 | - | |
| Beth Ann Smith - Officer | Option exercise | Restricted Stock Unit | 1,095 | $0.00 | - | |
| Beth Ann Smith - Officer | Grant or award | Restricted Stock Unit | 15,625 | $0.00 | - | |
| Beth Ann Smith - Officer | Grant or award | Employee Stock Option (right to buy) | 93,750 | $0.00 | - | |
| ||||||
| James Karrels - Officer | Option exercise | Common Stock | 14,999 | - footnote F1 | - | |
| James Karrels - Officer | Tax withholding / forfeiture | Common Stock | 5,790 | $1.71 | $10K | |
| James Karrels - Officer | Option exercise | Restricted Stock Unit | 14,999 | $0.00 | - | |
| James Karrels - Officer | Grant or award | Employee Stock Option (right to buy) | 150,000 | $0.00 | - | |
| James Karrels - Officer | Grant or award | Restricted Stock Unit | 25,000 | $0.00 | - | |
| ||||||
| Jeffrey Stuart Peters - Officer | Tax withholding / forfeiture | Common Stock | 5,147 | $1.71 | $9K | |
| Jeffrey Stuart Peters - Officer | Option exercise | Common Stock | 13,332 | - footnote F1 | - | |
| Jeffrey Stuart Peters - Officer | Option exercise | Restricted Stock Unit | 13,332 | $0.00 | - | |
| Jeffrey Stuart Peters - Officer | Grant or award | Employee Stock Option (right to buy) | 150,000 | $0.00 | - | |
| Jeffrey Stuart Peters - Officer | Grant or award | Restricted Stock Unit | 25,000 | $0.00 | - | |
| ||||||
 Thomas Spitznagel - Officer | Tax withholding / forfeiture | Common Stock | 5,520 | $1.71 | $9K | |
| Thomas Spitznagel - Officer | Option exercise | Common Stock | 13,332 | - footnote F1 | - | |
| Thomas Spitznagel - Officer | Option exercise | Restricted Stock Unit | 13,332 | $0.00 | - | |
| Thomas Spitznagel - Officer | Grant or award | Restricted Stock Unit | 25,000 | $0.00 | - | |
| Thomas Spitznagel - Officer | Grant or award | Employee Stock Option (right to buy) | 150,000 | $0.00 | - | |
| ||||||
| Eric Blasius Risser - Officer | Tax withholding / forfeiture | Common Stock | 6,433 | $1.71 | $11K | |
| Eric Blasius Risser - Officer | Option exercise | Common Stock | 16,665 | - footnote F1 | - | |
| Eric Blasius Risser - Officer | Option exercise | Restricted Stock Unit | 16,665 | $0.00 | - | |
| Eric Blasius Risser - Officer | Grant or award | Restricted Stock Unit | 100,000 | $0.00 | - | |
| Eric Blasius Risser - Officer | Grant or award | Employee Stock Option (right to buy) | 595,000 | $0.00 | - | |
| ||||||
| Scott Koenig - Director | Option exercise | Common Stock | 21,165 | $0.00 footnote F1 | - | |
| Scott Koenig - Director | Option exercise | Restricted Stock Unit | 21,165 | $0.00 | - | |
| ||||||
| Scott Koenig - Director | Option exercise | Common Stock | 15,831 | - footnote F1 | - | |
| Scott Koenig - Director | Option exercise | Restricted Stock Unit | 15,831 | $0.00 | - | |
| ||||||
| Thomas Spitznagel - Officer | Tax withholding / forfeiture | Common Stock | 2,485 | $1.81 | $4K | |
| Thomas Spitznagel - Officer | Tax withholding / forfeiture | Common Stock | 3,186 | $1.81 | $6K | |
| Thomas Spitznagel - Officer | Option exercise | Common Stock | 6,001 | - footnote F1 | - | |
| Thomas Spitznagel - Officer | Option exercise | Common Stock | 8,999 | - footnote F1 | - | |
| Thomas Spitznagel - Officer | Option exercise | Restricted Stock Unit | 6,001 | $0.00 | - | |
| Thomas Spitznagel - Officer | Option exercise | Restricted Stock Unit | 8,999 | $0.00 | - | |
| ||||||
| Beth Ann Smith - Officer | Tax withholding / forfeiture | Common Stock | 1,011 | $1.81 | $2K | |
| Beth Ann Smith - Officer | Tax withholding / forfeiture | Common Stock | 612 | $1.81 | $1K | |
| Beth Ann Smith - Officer | Option exercise | Common Stock | 2,617 | - footnote F1 | - | |
| Beth Ann Smith - Officer | Option exercise | Common Stock | 1,583 | - footnote F1 | - | |
| Beth Ann Smith - Officer | Option exercise | Restricted Stock Unit | 2,617 | $0.00 | - | |
| Beth Ann Smith - Officer | Option exercise | Restricted Stock Unit | 1,583 | $0.00 | - | |
| ||||||
| Eric Blasius Risser - Officer | Tax withholding / forfeiture | Common Stock | 2,575 | $1.81 | $5K | |
| Eric Blasius Risser - Officer | Tax withholding / forfeiture | Common Stock | 4,311 | $1.81 | $8K | |
| Eric Blasius Risser - Officer | Option exercise | Common Stock | 6,668 | - footnote F1 | - | |
| Eric Blasius Risser - Officer | Option exercise | Common Stock | 11,166 | - footnote F1 | - | |
| Eric Blasius Risser - Officer | Option exercise | Restricted Stock Unit | 6,668 | $0.00 | - | |
| Eric Blasius Risser - Officer | Option exercise | Restricted Stock Unit | 11,166 | $0.00 | - | |
| ||||||
| Jeffrey Stuart Peters - Officer | Tax withholding / forfeiture | Common Stock | 2,317 | $1.81 | $4K | |
| Jeffrey Stuart Peters - Officer | Tax withholding / forfeiture | Common Stock | 3,474 | $1.81 | $6K | |
| Jeffrey Stuart Peters - Officer | Option exercise | Common Stock | 6,001 | - footnote F1 | - | |
| Jeffrey Stuart Peters - Officer | Option exercise | Common Stock | 8,999 | - footnote F1 | - | |
| Jeffrey Stuart Peters - Officer | Option exercise | Restricted Stock Unit | 6,001 | $0.00 | - | |
| Jeffrey Stuart Peters - Officer | Option exercise | Restricted Stock Unit | 8,999 | $0.00 | - | |
| ||||||
| James Karrels - Officer | Option exercise | Common Stock | 6,334 | - footnote F1 | - | |
| James Karrels - Officer | Tax withholding / forfeiture | Common Stock | 2,446 | $1.81 | $4K | |
| James Karrels - Officer | Option exercise | Common Stock | 9,999 | - footnote F1 | - | |
| James Karrels - Officer | Tax withholding / forfeiture | Common Stock | 3,860 | $1.81 | $7K | |
| James Karrels - Officer | Option exercise | Restricted Stock Unit | 6,334 | $0.00 | - | |
| James Karrels - Officer | Option exercise | Restricted Stock Unit | 9,999 | $0.00 | - | |
| ||||||
| Ezio Bonvini - Officer | Tax withholding / forfeiture | Common Stock | 2,703 | $1.81 | $5K | |
| Ezio Bonvini - Officer | Tax withholding / forfeiture | Common Stock | 4,311 | $1.81 | $8K | |
| Ezio Bonvini - Officer | Option exercise | Common Stock | 7,001 | - footnote F1 | - | |
| Ezio Bonvini - Officer | Option exercise | Common Stock | 11,166 | - footnote F1 | - | |
| Ezio Bonvini - Officer | Option exercise | Restricted Stock Unit | 7,001 | $0.00 | - | |
| Ezio Bonvini - Officer | Option exercise | Restricted Stock Unit | 11,166 | $0.00 | - | |
| ||||||
| William K. Heiden - Director | Open-market purchase | Common Stock | 50,500 | $1.52 | $77K | |
| William K. Heiden - Director | Open-market purchase | Common Stock | 49,500 | $1.49 | $74K | |
| Jeffrey Stuart Peters - Officer | Grant or award | Employee Stock Option (right to buy) | 30,000 | $0.00 | - | |
| Thomas Spitznagel - Officer | Grant or award | Employee Stock Option (right to buy) | 30,000 | $0.00 | - | |
Item 9.01
Item 2.02, 9.01
Item 8.01
Item 5.02
Item 2.01, 7.01, 9.01
Recent MGNX Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Thomas Spitznagel | Former Officer | 15,811 | $66K | View on EDGAR | |
| Jeffrey Peters | Officer | 31,105 | $129K | View on EDGAR | |
| Jay Siegel | Former Director | 42,080 | $176K | View on EDGAR |
MGNX insider trading FAQ
What is the latest insider trade for MGNX?
MACROGENICS INC (MGNX) had 3 insider filings in the last 90 days, with the most recent on 2026-10-07. The full record for MGNX runs to 42 Form 4 filings, the earliest from 2024-10-09. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying MGNX stock?
No insider purchases of MGNX were filed in the last 90 days. 2 purchases are on record for this company.
How many insiders are selling MGNX stock?
1 insider sale of MGNX was filed in the last 90 days, totaling $129K.
Where can I see MGNX SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects MGNX Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Ezio Bonvini view on EDGAR
- - Jeffrey Stuart Peters view on EDGAR
- - Ezio Bonvini view on EDGAR
- - Federica F. O'Brien view on EDGAR
- - Scott Thomas Jackson view on EDGAR
- - William K. Heiden view on EDGAR
- - Jay Philip Siegel view on EDGAR
- - Margaret Liu view on EDGAR
- - Meenu Chhabra view on EDGAR
- - Edward Hurwitz view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Health Care
- Where MGNX's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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