• Magnite CEO Michael G. Barrett sold 278,596 common shares on June 15-16 at prices of USD 16.59 and USD 17.5.
• Sales followed option exercises for the same 278,596 shares at an exercise price of USD 5.8.
• Barrett’s direct holdings ended unchanged at 403,074 common shares.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Magnite Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001193125-26-274501), on June 17, 2026, and is solely responsible for the information contained therein.