0001415889-25-019022.txt : 20250702 0001415889-25-019022.hdr.sgml : 20250702 20250702161533 ACCESSION NUMBER: 0001415889-25-019022 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20250630 FILED AS OF DATE: 20250702 DATE AS OF CHANGE: 20250702 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Buonasera David CENTRAL INDEX KEY: 0001966857 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36384 FILM NUMBER: 251101218 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] ORGANIZATION NAME: 06 Technology EIN: 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 form4-07022025_040729.xml X0508 4 2025-06-30 0001595974 MAGNITE, INC. MGNI 0001966857 Buonasera David C/O MAGNITE, INC. 1250 BROADWAY, 15TH FLOOR NEW YORK NY 10001 false true false false CHIEF TECHNOLOGY OFFICER 1 Common Stock 2025-06-30 4 S 0 9289 22 D 249413 D The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 15, 2024. /s/ Aaron Saltz, attorney-in-fact 2025-07-02