0001209191-23-042224.txt : 20230713 0001209191-23-042224.hdr.sgml : 20230713 20230713165314 ACCESSION NUMBER: 0001209191-23-042224 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230711 FILED AS OF DATE: 20230713 DATE AS OF CHANGE: 20230713 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Day David CENTRAL INDEX KEY: 0001523288 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36384 FILM NUMBER: 231087247 MAIL ADDRESS: STREET 1: 21700 OXNARD STREET STREET 2: SUITE 1600 CITY: WOODLAND HILLS STATE: CA ZIP: 91367 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 2023-07-11 0 0001595974 MAGNITE, INC. MGNI 0001523288 Day David C/O MAGNITE, INC. 1250 BROADWAY, 15TH FLOOR NEW YORK NY 10001 0 1 0 0 Chief Financial Officer 1 Common Stock 2023-07-11 4 M 0 9584 1.97 A 434528 D Common Stock 2023-07-11 4 S 0 9584 15.00 D 424944 D Employee Stock Option (Right to Buy) 1.97 2023-07-11 4 M 0 9584 0.00 D 2028-03-15 Common Stock 9584 0 D This exercise and subsequent sale was made pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person on March 13, 2023. 25% of the shares originally subject to the option vested on February 1, 2019 and the remaining shares vested in 36 equal monthly installments thereafter. Granted as compensation for services. /s/ Aaron Saltz, attorney-in-fact 2023-07-13