David Buonasera - Feb 28, 2023 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: Feb 28, 2023
Transactions value $: $0
Form type: 4
Date filed: 3/2/2023, 03:30 PM
Next filing: May 18, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MGNI	Common Stock	Award	$0	+46.9K	+26.83%	$0.00	222K	Feb 28, 2023	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MGNI	Performance Stock Units	Award	$0	+18.2K		$0.00	18.2K	Feb 28, 2023	Common Stock	18.2K		Direct	F2, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents restricted stock units that vest as follows: 13,671 on May 15, 2024, 2,930 on each August 15, November 15, February 15 and May 15 thereafter until February 15, 2027 and 972 on May 15, 2027, subject to continued service to the Issuer through each vesting date. This equity grant may be subject to accelerated vesting in the event the Reporting Person's employment is terminated under certain circumstances.
F2	Equity grant under the Company's 2014 Equity Incentive Plan.
F3	Each performance stock unit ("PSU") represents a contingent right to receive on vesting one share of the Issuer's common stock.
F4	Vesting of the PSU will be determined based on the Issuer's total stockholder return ("TSR") for the three-year period commencing January 1, 2023 relative to the TSRs of the companies in the Russell 2000 index, over that period. The number of PSUs reported in column 5 reflects the target number of PSUs subject to the award. The award is eligible to vest as to 0% to 150% of the target number of PSUs.