Anthropic cofounders to sell $1.75 bln in IPO. Is that a bad sign?
Dario Amodei is a cofounder and CEO of Anthropic / Photo: 1 Andrew Thomas 1 / Shutterstock.com
Anthropic’s seven cofounders will sell a combined $1.75 billion worth of stock in the company’s IPO, according to its updated prospectus. Each is offering about $250 million worth of stock based on the midpoint of the $70-78 per share range set out in the filing. At that valuation, each cofounder will have a net worth of about $18 billion, Bloomberg reports.
Anthropic’s IPO and a private placement could raise up to $90.4 billion in total at a valuation of about $1.4 trillion. The IPO is set to price on November 18, with trading to begin the following day, according to deal terms reviewed by Bloomberg.
What do the cofounders’ sales signal?
When insiders sell shares as their company goes public, especially in such large quantities, it can send a bearish signal to the market, Bloomberg cautions. Still, the sales are unlikely to deter potential buyers, says Jay R. Ritter, an emeritus professor at the University of Florida’s Warrington College of Business who specializes in IPO research.
“It’s definitely on the high side in terms of dollar amount,” Ritter said. But “the market has gotten more comfortable with founders and large shareholders taking some money off the table.” Ritter pointed to Google’s 2004 IPO as a precedent. Larry Page and Sergey Brin each sold about $41 million worth of stock, while then-CEO Eric Schmidt sold about $31 million worth.
The sums Anthropic’s cofounders stand to collect are large, but the sales represent only about 1.5% of each cofounder’s stake. The cofounders have sold stock before. According to the prospectus, Dario Amodei and his sister Daniela sold shares in tender offers in June 2025 and April 2026. The vast majority of their wealth remains tied up in Anthropic stock. The sales will give the executives more cash on hand. Last year, the Amodeis each earned a relatively modest cash salary of about $650,000.
“Elon Musk isn’t selling any of his SpaceX shares, but he doesn’t have to worry about where his next meal is coming from,” Ritter said. “You’ve got some people with enormous paper wealth all in one stock, and not a whole lot of cash. And so selling a little bit is something that the market doesn’t get enormously concerned about.”
