All 7 Anthropic founders will each cash out about $250M in IPO

What happened

As Anthropic moves toward an enormous IPO that could value it at $1.4 trillion, a new S-1 filing discloses how many shares each of its seven co-founders plans to sell: 3,378,378 shares each. At the midrange price of $74 per share, each founder would take in just shy of $250 million, for a combined total of roughly $1.75 billion.

Key details

• Anthropic has floated an unusually broad initial price range of $70 to $78 a share. At the low end, each founder would pocket just over $236 million; at the high end, just under $264 million.
• According to the article, in an eagerly anticipated IPO like this one, companies can often price shares above the initial range.
• The S-1 already hints at high demand: board member Reed Hastings has indicated he wants to buy $300 million worth of shares through his donor-advised fund, and board member Christopher Liddell wants to buy $3 million worth of shares.
• The seven co-founders are Dario Amodei (CEO), 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 sale, each founder will own about 3.2% of total outstanding Class A shares, roughly 22% collectively. That is not their share of the company overall: other holders, including Amazon and Google, hold nonvoting Class N shares, so the founders' stake in total equity will be considerably smaller.
• Even so, the founders as a group remain in control. Each will also receive one share of Class F stock with supervoting rights; collectively they will control 51.1% of the votes, with no single founder holding significantly more shares or votes than the others.

Why it matters

The size of the cash-out and the pricing range are themselves market signals. All seven founders selling identical share amounts, combined with an unusually broad price range, indicates both strong interest and uncertainty around valuation. The voluntary subscription intentions disclosed in the S-1 are presented as evidence of high demand.

The ownership structure also reveals the company's governance model: through Class F supervoting shares, the founders collectively hold 51.1% of voting power and retain control even after cashing out, while major outside shareholders like Amazon and Google hold nonvoting Class N shares.

Who it affects

• For investors watching the IPO, the founders' large-scale selling and the broad price range are factors to weigh: potential selling pressure on one hand, high demand as portrayed in the S-1 on the other.
• For AI industry professionals, the seven who left OpenAI in 2021 after disagreements with OpenAI's leadership over how AI should be built now going public at a potential $1.4 trillion valuation marks a milestone in the industry landscape.
• For those studying corporate governance, Anthropic's multi-class share structure (Class A, N, and F) offers a case of founder control coexisting with massive external capital.

As Anthropic barrels toward an enormous IPO that could value it at $1.4 trillion, the company has disclosed a tidbit in its new S-1 filing about how many shares each of its seven co-founders plan to sell.

Each will sell 3,378,378 shares. Anthropic has floated an unusually broad initial price range of $70 to $78 a share. At the midrange of $74, each founder would take in just shy of $250 million.

At the low end, $70, each would have to settle for pocketing just over $236 million in cash; at the high end, $78, each would take in just under $264 million.

However, in an IPO as eagerly anticipated as this one, companies can often price shares above the initial range.

The S-1 is already hinting at high demand. Board member Reed Hastings has indicated he wants to buy $300 million worth of shares through his donor-advised fund. Board member Christopher Liddell also wants to buy $3 million worth of shares.

The seven co-founders are Dario Amodei, CEO; Daniela Amodei, president and chair of the board; Tom Brown, chief compute officer; Jack Clark, head of public benefit; Jared Kaplan, chief science officer (pictured above); Sam McCandlish, chief architect; and Christopher Olah, interpretability research lead.

After the sale, each of them will own about 3.2% of the total outstanding Class A shares, the S-1 says, or roughly 22% collectively. That’s not their share of the company overall. Class A is just one of Anthropic’s share classes, and other holders, including Amazon and Google, hold nonvoting Class N shares, so the founders’ stake in the company’s total equity will be considerably smaller. Even still, they, as a group, remain in control of the company. Each will also receive one share of Class F stock, which carries supervoting rights. Collectively, the founders will control 51.1% of the votes, but no single founder will hold significantly more shares or votes than the others.

As is now industry lore, the seven left OpenAI to start Anthropic in 2021 after disagreements with OpenAI’s leadership over how AI should be built. Siblings Dario and Daniela Amodei, who held senior research and policy roles at OpenAI, were joined by five fellow OpenAI colleagues in forming a company that has said, very publicly and from the start, that it’s more focused on AI safety than its rivals, including the founders’ former employer.

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Julie Bort is the Startups/Venture Desk editor for TechCrunch.

You can contact or verify outreach from Julie by emailing [email protected] or via @Julie188 on X.

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