Magnite, Inc. is a publicly traded (Nasdaq: MGNI), Delaware-incorporated sell-side advertising platform (SSP) headquartered in New York, which its own 10-K describes as 'the world's largest independent omni-channel sell-side advertising platform' and 'the largest independent programmatic CTV marketplace.' Its Advertising Platform Privacy Policy discloses that it uses cookies and similar tracking technologies to collect IP addresses, cookie data and device identifiers from users who visit publisher ('Digital Media Property') sites and apps that run its technology, and assigns its own identifiers to devices to support ad targeting; the same policy carries a Texas-law data-broker disclosure stating it 'may sell (as defined under Texas law) your sensitive personal data.' Magnite's 10-K discloses it has recently been subject to class-action lawsuits alleging violations of various privacy statutes (allegations, not a judgment or settlement) and separately states it is not aware of any cybersecurity incident that has materially affected the company. Its own CCPA transparency table shows very low request-fulfillment rates (4 of 29 access requests and 1 of 72 deletion requests completed in 2025).