Magnite (NASDAQ:MGNI), the world's largest independent sell-side advertising platform, today announced the retirement of David Day, Chief Financial Officer (CFO). To ensure a seamless transition, Mr. Day is expected to serve as CFO through September 30, 2026 and then as a special advisor through May 31, 2027. The Board of Directors has initiated a comprehensive search for a new CFO, which will include both external and internal candidates, and Mr. Day will actively participate in the process to find his successor.