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

Role: CHIEF ACCOUNTING OFFICER
Signature: /s/ Aaron Saltz, attorney-in-fact
Issuer symbol: MGNI
Transactions as of: 15 May 2025
Net transactions value: -$48,355
Form type: 4
Filing time: 16 May 2025, 17:40:14 UTC
Previous filing: 14 May 2025
Next filing: 20 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Gephart Brian	CHIEF ACCOUNTING OFFICER	C/O MAGNITE, INC., 1250 BROADWAY, 15TH FLOOR, NEW YORK	/s/ Aaron Saltz, attorney-in-fact	16 May 2025	0001778484

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MGNI	Common Stock	Tax liability	$48,355	-3,045	-2.4%	$15.88	123,530	15 May 2025	Direct	F1

* 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.