Anthropic Issues Warning on Tokenized Shares, Declares Them 'Invalid'

Warning to the Secondary Market

In May 2026, Anthropic, the developer of generative AI 'Claude', issued a warning on its support page stating that any stock transfers or sales not approved by its board of directors are void and will not be recorded in the shareholder register.

The company has cautioned against solicitations by certain investment firms and platforms that offer 'opportunities to participate in future financing' or 'indirect exposure', stating that these...