On April 20, 2026, Magnite Inc. (Nasdaq: MGNI), the world’s largest independent sell-side advertising platform, made headlines with the announcement of the impending retirement of Chief Financial Officer David Day. This transition marks a significant moment in the company’s evolution, as Day has been a pivotal figure in Magnite’s financial strategy and operations.

2. A Smooth Transition Plan

David Day will continue to serve as CFO until September 30, 2026, ensuring a seamless transition as the company embarks on a search for his successor. After this period, he will assume the role of special advisor until May 31, 2027, allowing him to lend his expertise during the transition phase. The Board of Directors has initiated a thorough search process, evaluating both internal and external candidates for the CFO position, with Day actively participating in the selection process.

3. Leadership Praise

In expressing gratitude for Day’s contributions, Michael Barrett, CEO of Magnite, stated, “David has been an invaluable partner and a steady hand during a period of immense transformation for our company.” Barrett highlighted Day’s journey from the early days of the predecessor company, Rubicon Project, through its initial public offering (IPO), to his tenure as CFO over the last decade.

Paul Caine, Chairman of the Board, echoed these sentiments, thanking Day for his extraordinary leadership during a transformative time for Magnite. Caine noted that Day’s strategic vision was crucial in evolving the company’s financial foundation to meet the challenges of a dynamic industry.

4. Day’s Impact on Magnite

David Day has been a cornerstone of Magnite’s leadership team, overseeing a broad spectrum of financial operations, including planning, accounting, reporting, financial systems, tax, treasury, and investor relations. His role was particularly significant during the pivotal 2020 merger between Rubicon Project and Telaria, as well as in the acquisitions of SpotX and SpringServe. Day played a vital role in financing and integrating these companies, ultimately leading to the successful scaling of the unified Magnite brand.

Reflecting on his tenure, Day stated, “It has been an incredible journey to help lead Magnite through such a dynamic era of growth. I am immensely proud of the company we have built, our world-class finance team, and the Company’s robust financial position.” He emphasized his commitment to ensuring that the company’s momentum continues unabated during the transition.

5. Looking Ahead

As Magnite prepares for this leadership change, the company reaffirms its expectations for Q1 and full-year 2026, as disclosed in its Q4 2025 earnings release on February 25, 2026. The continuity in financial leadership is vital in maintaining investor confidence and strategic direction during this transitional phase.

6. About Magnite

Headquartered in New York City, with offices in Los Angeles, Denver, London, Singapore, and Sydney, Magnite is the world’s largest independent sell-side advertising company. The platform empowers publishers to monetize their content across various screens and formats, including connected TV (CTV), online video, display, and audio. As a trusted partner for leading agencies and brands, Magnite facilitates billions of advertising transactions each month, underscoring its position in the industry.

As the company navigates this leadership transition, the financial community will be closely watching how Magnite adapts and evolves under new leadership, continuing to drive innovation and growth in the competitive advertising landscape.

Original press release