MAGNITE, INC. 8-K

What Happened

• Magnite, Inc. (MGNI) announced on April 20, 2026 that Chief Financial Officer David Day plans to retire. Under a transition agreement, Mr. Day will continue to serve as CFO through September 30, 2026 and is expected to remain employed as a non-executive advisor through May 31, 2027 to support an orderly transition. The company furnished a press release announcing the retirement (Exhibit 99.1) and reaffirmed its previously disclosed expectations for Q1 and full-year 2026 financial performance (as set out in its February 25, 2026 Q4 2025 earnings release).

Key Details

• Date of filing: April 20, 2026 (Form 8-K).
• CFO status: David Day will remain acting CFO until September 30, 2026.
• Post-CFO role: Expected to serve as a non-executive advisor through May 31, 2027.
• Guidance: Company reaffirmed its Q1 and full-year 2026 expectations previously disclosed on February 25, 2026.

Why It Matters

• Leadership continuity: Keeping Mr. Day as CFO through September and as an advisor through May 2027 provides time for a transition and could reduce short-term disruption to financial reporting and operations.
• Investor focus: Because Magnite reaffirmed its Q1 and full-year 2026 expectations, there is no immediate change to the company’s disclosed financial outlook in this filing.
• Next steps to watch: Investors should monitor announcements about a successor CFO, any changes to financial guidance, and how management addresses the transition in upcoming earnings calls and SEC filings.