0001231919-23-000064.txt : 20230905 0001231919-23-000064.hdr.sgml : 20230905 20230905201436 ACCESSION NUMBER: 0001231919-23-000064 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230905 DATE AS OF CHANGE: 20230905 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: 231237555 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: Buonasera David CENTRAL INDEX KEY: 0001966857 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O MAGNITE, INC. STREET 2: 1250 BROADWAY, 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 144 1 primary_doc.xml 144 0001966857 XXXXXXXX LIVE 0001595974 MAGNITE, INC. 001-36384 1250 BROADWAY 15TH FLOOR NEW YORK NY 10001 212-243-2769 Buonasera David Officer Common ETrade Financial Corporation

3 Edison Drive Alpharetta GA 30005

5900 49796.00 136958660 09/06/2023 NASDAQ Common 09/01/2023 Restricted Stock Unit - See Remarks Magnite, Inc. N 5900 09/01/2023 Equity Compensation N David Buonasera

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

Common 07/03/2023 6624 88967.61 David Buonasera

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

Common 08/16/2023 2648 22010.45 Shares sold to cover tax obligation from settlement of vested Restricted Stock Units. 09/05/2023 /s/ David Buonasera