David Buonasera - 15 May 2025 Form 4 Insider Report for MAGNITE, INC. (MGNI)

Reporting relationship: CHIEF TECHNOLOGY OFFICER
Issuer ticker: MGNI
Reported as of: 15 May 2025
Net transaction value: -$127,643
SEC form: 4
Accepted by SEC: 16 May 2025, 17:40:18 UTC
Prior SEC filing: 19 Feb 2025
Next SEC filing: 28 May 2025
Source filing: View source filing
Reporting owner signature: /s/ Aaron Saltz, attorney-in-fact

Key filing fact

David Buonasera filed Form 4 for MAGNITE, INC. (MGNI) on 16 May 2025.

Key facts

This page summarizes David Buonasera's Form 4 filing for MAGNITE, INC. (MGNI).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 16 May 2025, 17:40.

Change

Previous filing in this sequence was filed on 19 Feb 2025.
Current net transaction value: -$127,643.

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 0001966857 Primary reporting owner

Buonasera David

Relationship: CHIEF TECHNOLOGY OFFICER
Address: C/O MAGNITE, INC., 1250 BROADWAY, 15TH FLOOR, NEW YORK
Signature: /s/ Aaron Saltz, attorney-in-fact
Signature date: 16 May 2025

Reported non-derivative transactions

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

MGNI transaction

Common Stock

Tax liability

Transaction value: $127,643
Shares: -8,038
Change %: -2.9%
Price: $15.88
Shares after: 271,097
Date: 15 May 2025
Ownership: Direct
Footnotes: F1, 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

Represents the non-discretionary forfeiture of shares on behalf of the Reporting Person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.

Footnote F2

Includes 340 shares acquired by the Reporting Person on May 15, 2025 under the Issuer's Employee Stock Purchase Plan.