Magnite Names New CFO as David Day Retires After Decade
Event summary
- Brian Gephart promoted to CFO of Magnite, effective October 1, 2026.
- Succeeds David Day, who retires after 10 years as CFO.
- Gephart previously served as Magnite’s Chief Accounting Officer since 2021.
- Gephart brings 20 years of experience in public-company finance and capital markets.
The big picture
Magnite’s CFO transition comes as the company solidifies its position as the largest independent sell-side advertising platform, particularly in the rapidly expanding CTV sector. The move reflects a strategic shift in financial leadership amid a period of growth and market consolidation. Gephart’s capital markets experience will be critical as Magnite navigates investor expectations and operational scaling.
What we're watching
- Leadership Continuity
- How Gephart’s transition will impact Magnite’s financial discipline and strategic execution.
- CTV Growth
- Whether Magnite can sustain its leadership in the fast-growing connected TV advertising landscape.
- Market Position
- The pace at which Magnite scales its open internet and CTV platform amid competitive pressures.