Former president of Microsoft's Windows division who was one of Jeffrey Epstein's five named clients, as confirmed by Richard Kahn's March 2026 congressional deposition. Epstein acted as Sinofsky's paid exit negotiator from Microsoft after his departure in November 2012, explicitly charging a $1 million fee while coaching strategy to extract maximum severance. Sinofsky responded: "Any fee you want is fine.
That isn't an issue for me." The EFTA documents reveal 2,604 OCR mentions across an 8-year relationship (September 2011 to June 2019). Epstein directly managed Sinofsky's attorney Jay Lefkowitz (Kirkland & Ellis) and negotiated with Microsoft CLO Brad Smith, coaching Sinofsky: "have jay just hang tough... use the fiscal cliff as a model. when jay asks what do you really want, tell him twenty, do not give up your hand to anyone." The "twenty" referred to approximately $20 million in stock vesting. After leaving Microsoft, Sinofsky became a board partner at Andreessen Horowitz and fed Epstein intelligence on Silicon Valley deals, including conversations with Tim Cook (Apple CEO), Bill Gates/a16z introductions, WeWork analysis, and venture deal flow.
Epstein forwarded Sinofsky's Citibank wire confirmation to Richard Kahn, confirming the financial relationship. Sinofsky appeared on Epstein's contact list prepared for Steve Bannon just weeks before Epstein's July 2019 arrest, alongside Gates, Thiel, Hoffman, Dershowitz, Prince Andrew, and Clinton.