Sheila Marmon has a passion for launching new businesses in the digital media and technology industries, where she has created and led innovative platforms for over 20 years. With a focus on growth markets, her expertise delivers meaningful financial returns for digital publishers, creators, investors, and multinational clients.
As Founder + CEO of Mirror Digital, a technology-enabled digital media and publishing company, she helps leading global brands tap into the fastest growing segments of the U.S. consumer base – diverse and culture-first markets. A pioneer in this space for over 13 years, Sheila and her team have executed over 1,500 digital media programs for leading clients, including Amazon, AT&T, Comcast, Disney, General Motors, Haleon, McDonald’s, Procter & Gamble, SheaMoisture, Universal Pictures, and Walmart, among others.
Sheila has been featured in global publications including Inc. Magazine, Fast Company, and The Financial Times.
In the past two years alone, Sheila has received numerous industry and civic honors, including being named to the 2025 Inc. Female Founders List, one of the Top Women in Media and Ad Tech by Ad Monsters & Ad Exchanger, and receiving the Innovator Award from the Advertising Club of New York Foundation. Under her leadership, Mirror Digital was named a “Best Place to Work” by Ad Age and recognized by Inc. Magazine as one of America’s fastest-growing private companies, twice! She also serves on several nonprofit boards, including the American Advertising Federation, where she chairs the Digital Committee.
Sheila graduated with a B.A. from Princeton University, cum laude, and an MBA from the Harvard Graduate School of Business. She resides in Los Angeles with her husband, Steven Heuer.
