[Anthropic Issues Warning on Secondary Market Stock Trading] According to AXIOS, Anthropic is cracking down on unauthorized secondary market stock trading, at least verbally. Anthropic previously stated that any sale or transfer of Anthropic stock or any equity interest in Anthropic without board approval is invalid and will not be recognized in the company's books and records. The company then specifically named eight secondary trading platforms, including well-known platforms like Hiive and Forge.