0001595974 2026-10-07 2026-10-07 false 0001595974 8-K 2026-10-07 MAGNITE, INC. DE 001-36384 20-8881738 1250 Broadway 9th Floor New York NY 10001 (212) 243-2769 false false false false Common stock, par value $0.00001 per share MGNI NASDAQ false