0001231919-23-000056.txt : 20230824 0001231919-23-000056.hdr.sgml : 20230824 20230824163342 ACCESSION NUMBER: 0001231919-23-000056 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230824 DATE AS OF CHANGE: 20230824 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: MAGNITE, INC. CENTRAL INDEX KEY: 0001595974 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370] IRS NUMBER: 208881738 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-36384 FILM NUMBER: 231202602 BUSINESS ADDRESS: STREET 1: 1250 BROADWAY STREET 2: 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 BUSINESS PHONE: 212-243-2769 MAIL ADDRESS: STREET 1: 1250 BROADWAY STREET 2: 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 FORMER COMPANY: FORMER CONFORMED NAME: RUBICON PROJECT, INC. DATE OF NAME CHANGE: 20140106 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Buckley Sean Patrick CENTRAL INDEX KEY: 0001865116 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O MAGNITE, INC. STREET 2: 6080 CENTER DRIVE, 4TH FLOOR CITY: LOS ANGELES STATE: CA ZIP: 90045 144 1 primary_doc.xml 144 0001865116 XXXXXXXX LIVE 0001595974 MAGNITE, INC. 001-36384 1250 BROADWAY 15TH FLOOR NEW YORK NY 10001 212-243-2769 Buckley Sean Patrick Officer Common ETrade Financial Corporation

3 Edison Drive Alpharetta GA 30005

5273 43818.63 136958660 08/16/2023 NASDAQ Common 08/15/2023 Restricted Stock Unit - See Remarks Magnite, Inc. N 5273 08/15/2023 Equity Compensation N Sean Buckley

c/o Magnite, Inc. 1250 Broadway, 15th Floor New York NY 10001

Common 06/02/2023 12219 158704.04 Shares sold to cover tax obligation from settlement of vested Restricted Stock Units. 08/24/2023 /s/ Sean Buckley