Estimated at $1.75 billion... Seven Anthropic founders to sell existing shares in IPO

Seven Anthropic co-founders plan to sell 23,648,646 existing shares in the company's IPO, a stake worth roughly $1.75 billion at the midpoint of the $70–$78 per-share filing range, according to an amended SEC registration statement. Each co-founder would offload an identical 3,378,378 shares, about $250 million apiece at the $74 midpoint, with final proceeds depending on the ultimate offer price. The shares are existing holdings rather than newly issued stock, meaning the sale delivers liquidity to the founders without raising fresh capital for Anthropic. The disclosure puts a concrete figure on founder-level wealth tied to the AI developer's listing and sets up the IPO pricing as the next milestone to watch.