Anthropic is about to stage the biggest AI listing ever attempted, and its founders are about to get very rich. The company behind the Claude chatbot filed an amended prospectus on Tuesday that finally priced its shares: $70 to $78 each, for 825 million shares, on the Nasdaq as ANT. At the top of that range, Anthropic would be worth about $1.4 trillion. The same filing also says all seven co-founders plan to sell exactly the same number of shares, 3,378,378 each, worth just under $250 million apiece at the $74 midpoint, and after selling they will still control the company.
A quarter of a billion each, and barely a dent
The numbers sound enormous until you set them against what the founders still hold. Each owns between roughly 240 million and 244 million shares, so selling 3.4 million means giving up only about 1.4 percent of each stake. Together, the seven will take in about $1.75 billion while keeping more than 98 percent of their shares. At $70, each would pocket just over $236 million; at $78, just under $264 million. Anthropic receives none of the money from these sales, since the shares come from existing holders. The company raises its own money separately, through a $26 billion private placement from chip and cloud giants including Google, Nvidia and AMD. Board member Reed Hastings wants to buy $300 million worth of shares through his donor advised fund.
Control stays with the seven
The cash-out is small on purpose, and the control structure is the real story. After the offering, each founder will still own about 3.2 percent of the Class A shares, or roughly 22 percent collectively. Each will also hold one share of Class F stock, which carries supervoting rights. Together, the seven will control 51.1 percent of the votes, with no single founder holding much more than the others. Anthropic was founded in 2021 by seven former OpenAI colleagues who left over disagreements about how AI should be built, and the company has said from the start that it is more focused on AI safety than its rivals. The structure makes sure that focus cannot be voted away by public shareholders in the first years after listing.

Dario Amodei at TechCrunch Disrupt 2023. Photo: TechCrunch, CC BY 2.0, via Wikimedia Commons.
What the IPO tells us about the AI market
Anthropic is the first big AI lab to test the public markets at this scale. The company was worth $965 billion in a private round in May. Five months later, the IPO range implies up to $1.4 trillion on a fully diluted basis. The jump says investors will pay a premium for a company that sells AI as a product, not just a promise. OpenAI, valued at $1.25 trillion in its own recent funding, has stayed private. Anthropic going public first means its revenue, costs and governance will be visible as no frontier lab has been before, and the industry will watch whether the market rewards that transparency or punishes it.
What to watch next
Pricing is expected on November 18, with trading to begin on November 19. First, where do the shares actually price? In an offering this eagerly anticipated, companies often price above the initial range, and a price above $78 would push the valuation past $1.4 trillion. Second, the first day of trading: a sharp pop would confirm the market hunger for AI stocks, while a flat debut would raise questions about whether even the hottest AI name has a ceiling. Either way, the founders have made their point: a quarter of a billion dollars each off the table, almost everything they own kept, and control of the company they built.