0001209191-23-023611.txt : 20230406 0001209191-23-023611.hdr.sgml : 20230406 20230406171857 ACCESSION NUMBER: 0001209191-23-023611 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230404 FILED AS OF DATE: 20230406 DATE AS OF CHANGE: 20230406 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: BARRETT MICHAEL G. CENTRAL INDEX KEY: 0001100612 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36384 FILM NUMBER: 23807128 BUSINESS ADDRESS: BUSINESS PHONE: 310-207-0272 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 FORMER NAME: FORMER CONFORMED NAME: BARRETT MICHAEL DATE OF NAME CHANGE: 19991207 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: 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 4 1 doc4.xml FORM 4 SUBMISSION X0407 4 2023-04-04 0 0001595974 MAGNITE, INC. MGNI 0001100612 BARRETT MICHAEL G. C/O MAGNITE, INC. 1250 BROADWAY,15TH FLOOR NEW YORK NY 10001 1 1 0 0 CEO 0 Common Stock 2023-04-04 4 M 0 138014 0.00 A 1597523 D Common Stock 2023-04-04 4 F 0 69743 9.05 D 1527780 D Performance Stock Units 2023-04-04 4 M 0 138014 0.00 D Common Stock 138014 0 D Represents the number of shares that vested under a performance-based restricted stock unit award, which was granted on April 1, 2020, based on the Issuer's total stockholder return ("TSR") for the three-year period beginning on April 1, 2020 relative to the TSRs of the companies in the Russell 2000 index over that period, which vesting occurred on April 4, 2023. The vested shares represent the total number of shares earned under the performance-based restricted stock unit award, and the remainder reported in the Reporting Person's Form 4 filed with the Securities and Exchange Commission on April 3, 2020 were forfeited. Represents the non-discretionary forfeiture 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 and settlement of the performance-based restricted stock units reported in footnote (1) herein. Each performance-based restricted stock unit represents a contingent right to receive on vesting one share of the Issuer's common stock. /s/ Aaron Saltz, attorney-in-fact 2023-04-06