MAGNITE, INC. — Director's Dealing 2021

May 28, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MAGNITE, INC. (MGNI)
CIK: 0001595974
Period of Report: 2021-05-26

Reporting Person: Evans Katie Seitz (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-26	Common Stock	M	1442	$3.96	Acquired	380902	Direct
2021-05-26	Common Stock	M	2884	$4.64	Acquired	383786	Direct
2021-05-26	Common Stock	M	2884	$4.64	Acquired	386670	Direct
2021-05-26	Common Stock	M	7212	$5.46	Acquired	393882	Direct
2021-05-26	Common Stock	M	5410	$7.74	Acquired	399292	Direct
2021-05-26	Common Stock	M	22971	$3.95	Acquired	422263	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-26	Stock Option (Right to Buy)	$3.96	M	1442	Disposed	2021-06-08	Common Stock (1442)	Direct
2021-05-26	Stock Option (Right to Buy)	$4.64	M	2884	Disposed	2022-07-26	Common Stock (2884)	Direct
2021-05-26	Stock Option (Right to Buy)	$4.64	M	2884	Disposed	2022-07-19	Common Stock (2884)	Direct
2021-05-26	Stock Option (Right to Buy)	$5.46	M	7212	Disposed	2023-03-05	Common Stock (7212)	Direct
2021-05-26	Stock Option (Right to Buy)	$7.74	M	5410	Disposed	2023-07-31	Common Stock (5410)	Direct
2021-05-26	Stock Option (Right to Buy)	$3.95	M	22971	Disposed	2023-12-05	Common Stock (2291)	Direct

Footnotes

F1: Immediately exercisable.