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

Role
CHIEF TECHNOLOGY OFFICER
Signature
/s/ Aaron Saltz, attorney-in-fact
Stock symbol
MGNI
Transactions as of
Nov 15, 2025
Transactions value $
-$100,875
Form type
4
Date filed
11/18/2025, 06:00 PM
Previous filing
Sep 4, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Buonasera David CHIEF TECHNOLOGY OFFICER C/O MAGNITE, INC., 1250 BROADWAY, 9TH FLOOR, NEW YORK /s/ Aaron Saltz, attorney-in-fact 2025-11-18 0001966857

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MGNI Common Stock Tax liability -$101K -7.13K -2.98% $14.15 232K Nov 15, 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.
F2 Includes 324 shares acquired by the Reporting Person on November 15, 2025 under the Issuer's Employee Stock Purchase Plan.