Anthropic Invalidates Unauthorized Secondary Stock Trades

Anthropic has declared all unauthorized secondary market transactions of its shares null and void as of May 11. The AI company's corporate bylaws now explicitly prohibit transfers on platforms like Forge Global and Hiive without board approval, effectively rendering such trades unrecognized.

The policy sweep extends to various transaction structures including tokenized securities and special purpose vehicles. Forge Global had recently priced Anthropic shares at a staggering $1 trillion implied valuation—surpassing OpenAI's secondary market valuation—before the ban took effect.

Legal experts note the deliberate use of "void" represents the strongest possible enforcement stance. The move signals growing scrutiny over private market liquidity as crypto-adjacent startups grapple with valuation volatility and regulatory uncertainty.