Ezio Bonvini - 17 Aug 2026 Form 4 Insider Report for MACROGENICS INC (MGNX)

Reporting relationship: Sr VP, Research & CSO
Issuer ticker: MGNX
Reported as of: 17 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 18 Aug 2026, 16:19:05 UTC
Prior SEC filing: 17 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Beth A. Smith, Attorney-in-fact

Key filing fact

Ezio Bonvini filed Form 4 for MACROGENICS INC (MGNX) on 18 Aug 2026.

Key facts

This page summarizes Ezio Bonvini's Form 4 filing for MACROGENICS INC (MGNX).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 18 Aug 2026, 16:19.

Change

Previous filing in this sequence was filed on 17 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001588365 Primary reporting owner

Bonvini Ezio

Relationship: Sr VP, Research & CSO
Address: 9704 MEDICAL CENTER DRIVE, ROCKVILLE
Signature: /s/ Beth A. Smith, Attorney-in-fact
Signature date: 18 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MGNX transaction

Common Stock

Options Exercise

Transaction value
Shares: +40,000
Change %: +27%
Price: $2.60^*
Shares after: 185,799
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MGNX transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -40,000
Change %: -31%
Price: $2.60^*
Shares after: 88,000
Date: 17 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 40,000
Exercise price: $2.60
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The transaction represents an exercise and hold of options.

Footnote F2

12.5% of the shares underlying the grant become exercisable 6 months after the date of grant and an additional 6.25% of the shares underlying the grant become exercisable on the first day of each three-month period thereafter.