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Sarah Fay

Managing Director at Glasswing Ventures

Venture investing at the intersection of AI, advertising, and consumer privacy advocacy

Thought LeaderBoston, Massachusetts, United States30+ years in industry

Last updated May 31, 2026 by the ATDb Editorial Team

Bio

Sarah Fay is Managing Director at Glasswing Ventures, where she applies three decades of senior leadership experience in media and advertising to the venture capital space. Her career spans executive roles at Carat Americas (Dentsu Aegis Network), Aegis Media, and Publicis Groupe, giving her deep operational insight into the forces shaping modern marketing and technology. A credentialed industry veteran, she has become a prominent voice on issues of consumer privacy and the structural dynamics of digital advertising.

Previous Roles

CEO

Carat Americas (Dentsu Aegis Network)

Senior Leadership

Aegis Media

Senior Leadership

Publicis Groupe

Expertise
Data Privacy and Consumer RightsSurveillance Capitalism ReformMedia Agency OperationsProgrammatic AdvertisingAI EthicsAdTech InvestmentAntitrust and Regulatory PolicyMedia Strategy
Notable Achievements
  • Filed an antitrust complaint against Google, one of the few senior advertising executives to take formal legal action against a major platform
  • Served as CEO of Carat Americas, one of the world's largest media agencies by billings
  • Founded Glasswing Ventures, an investment firm focused on AI and AdTech
  • Became a leading public advocate for consumer privacy reform within the advertising industry
Awards
Recognized as one of the most influential executives in advertising and media
Speaking Topics
Surveillance capitalism and the ethics of behavioral advertisingConsumer privacy rights and data reformAntitrust and regulatory oversight of big techAI ethics and responsible technology developmentThe future of advertising post-surveillance
Connections