Anthropic’s warning that unauthorised share transfers are “void” has rattled private-market investors, raising fears over liquidity, ownership rights, and inflated AI startup valuations.
According to details circulating among investors, Anthropic has stated that any sale or transfer of its shares without approval from the company’s Board of Directors would be considered “void,” meaning buyers may not receive legal ownership of the shares.
The move has sparked concerns because Anthropic’s shares have been actively traded in private markets at soaring valuations amid the global AI boom. Market participants say the new restrictions could sharply reduce liquidity and undermine confidence in unofficial secondary transactions.
Some investors and commentators claimed the announcement effectively wiped out hundreds of billions of dollars in implied private-market value within hours, though those figures remain unverified and appear based on speculative trading estimates rather than official company valuations.
The development highlights growing tensions in the booming AI startup ecosystem, where demand for shares in companies such as OpenAI and Anthropic has fuelled aggressive secondary-market activity even before public listings.
