0001209191-23-030827.txt : 20230518 0001209191-23-030827.hdr.sgml : 20230518 20230518200334 ACCESSION NUMBER: 0001209191-23-030827 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230516 FILED AS OF DATE: 20230518 DATE AS OF CHANGE: 20230518 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Buonasera David CENTRAL INDEX KEY: 0001966857 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36384 FILM NUMBER: 23937667 MAIL ADDRESS: STREET 1: C/O MAGNITE, INC. STREET 2: 1250 BROADWAY, 15TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10001 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 2023-05-16 0 0001595974 MAGNITE, INC. MGNI 0001966857 Buonasera David C/O MAGNITE, INC. 1250 BROADWAY, 15TH FLOOR NEW YORK NY 10001 0 1 0 0 Chief Technology Officer 0 Common Stock 2023-05-16 4 S 0 1559 10.88 D 221962 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. Includes 1,964 shares acquired by the Reporting Person on May 15, 2023 under the Issuer's employee stock purchase plan. /s/ Aaron Saltz, attorney-in-fact 2023-05-18