0001209191-21-034206.txt : 20210519 0001209191-21-034206.hdr.sgml : 20210519 20210519191625 ACCESSION NUMBER: 0001209191-21-034206 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210517 FILED AS OF DATE: 20210519 DATE AS OF CHANGE: 20210519 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Prusz Joseph R CENTRAL INDEX KEY: 0001721039 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36384 FILM NUMBER: 21941884 MAIL ADDRESS: STREET 1: C/O THE RUBICON PROJECT, INC. STREET 2: 12181 BLUFF CREEK DRIVE, 4TH FLOOR CITY: PLAYA VISTA STATE: CA ZIP: 90094 ISSUER: 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 BUSINESS ADDRESS: STREET 1: 12181 BLUFF CREEK DRIVE, 4TH FLOOR CITY: LOS ANGELES STATE: CA ZIP: 90094 BUSINESS PHONE: 310-207-0272 MAIL ADDRESS: STREET 1: 12181 BLUFF CREEK DRIVE, 4TH FLOOR CITY: LOS ANGELES STATE: CA ZIP: 90094 FORMER COMPANY: FORMER CONFORMED NAME: RUBICON PROJECT, INC. DATE OF NAME CHANGE: 20140106 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2021-05-17 0 0001595974 MAGNITE, INC. MGNI 0001721039 Prusz Joseph R C/O MAGNITE, INC. 6080 CENTER DRIVE, 4TH FLOOR LOS ANGELES CA 90045 0 1 0 0 Global Chief Revenue Officer Common Stock 2021-05-17 4 S 0 22248 25.98 D 330310 D Represents the non-discretionary sale 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. /s/ Aaron Saltz, attorney-in-fact 2021-05-19