Mark Douglas is the founder of MNTN. MNTN has raised $187M in total funding. Latest round: IPO. Backed by Ryan Reynolds. Based in Los Angeles, CA.
Mark Douglas is the founder and CEO of MNTN, an advertising software company that enables brands to reach audiences across Connected TV, web, and mobile. He taught himself to code and built MNTN into a Ryan Reynolds-backed adtech firm that debuted on the New York Stock Exchange in May 2025 with a valuation exceeding $1.2 billion. Douglas led the company through its IPO, which raised $187 million by selling 11.7 million shares at $16 each.
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