Anthropic Founders Each to Earn Around $250M in Upcoming IPO

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Anthropic's seven co-founders plan to sell equal shares in the company's IPO, potentially netting about $250 million each while retaining control through supervoting shares.

Anthropic, an AI company founded in 2021 by seven ex-OpenAI leaders focused on AI safety, is preparing for a highly anticipated initial public offering (IPO) that could value the firm at approximately $1.4 trillion. According to the company's SEC S-1 filing, each of the seven co-founders will sell an identical number of shares—3,378,378—in the IPO.

Anthropic has set a broad initial price range of $70 to $78 per share. At the midpoint price of $74, this sale would translate to nearly $250 million in cash proceeds for each founder. If priced at the low end, $70 per share, each founder would receive just over $236 million; at the high end, $78, nearly $264 million each. The final pricing could exceed this range given strong investor demand indicated in the filing.

The seven founders include CEO Dario Amodei; Daniela Amodei, president and chair of the board; Tom Brown, chief compute officer; Jack Clark, head of public benefit; Jared Kaplan, chief science officer; Sam McCandlish, chief architect; and Christopher Olah, interpretability research lead. After the IPO, each founder will retain about 3.2% ownership of Class A shares, totaling roughly 22% collectively of this class. However, because other shareholders—including Amazon and Google—hold non-voting Class N shares, the founders’ overall equity stake is smaller.

Importantly, the founders will each receive one Class F supervoting share, granting them collective control of 51.1% of voting power in the company, ensuring they maintain control despite selling substantial equity. The structure prevents any single founder from dominating control.

The genesis of Anthropic traces back to a split from OpenAI due to differing views on AI development approaches. The founding team emphasizes AI safety as a primary mission, setting the company apart from its competitors, including OpenAI, their former employer. This IPO move marks a significant milestone in their growth and public market debut.