Anthropic bylaw change could spur litigation as Claude hits AWS

Anthropic amended its bylaws on May 11 to declare many secondary transfers of its stock void unless the board approves them, and on the same day made its Claude Platform generally available on Amazon Web Services.

The bylaw text states: “Any sale or transfer of Anthropic stock… that has not been approved by our Board of Directors is void and will not be recognized on our books and records.” It lists secondary trading sites including Forge and Hiive and names Open Door Partners, Unicorns Exchange, Pachamama, Lionheart Ventures, Sydecar and Upmarket. The rule covers beneficial interests, forward contracts, special purpose vehicles and tokenized securities.

Gabriel Shapiro, founder of crypto law firm MetaLeX, wrote on X that declaring transfers “void” rather than “voidable” is unusually forceful and could increase litigation under Delaware corporate law. He added he was “surprised more people are not paying attention” and described the change as a “potential bombshell.”

Under the bylaw, alleged buyers will not be recorded on Anthropic’s books and will not hold stockholder rights unless the board accepts the transfer. Anthropic has not published a process for how the board will review or potentially approve transfers completed without prior consent.

The bylaw revision comes amid active trading on secondary markets that implied Anthropic valuations above the roughly $350 billion level used in the company’s most recent employee tender. Those implied prices supported demand for indirect exposure vehicles such as special purpose vehicles and tokenized shares, forms of ownership the bylaw treats as invalid without board approval.

Hours after updating its bylaws Anthropic opened Claude Platform on AWS. Enterprise customers can authenticate with AWS Identity and Access Management, consolidate billing and access the full Claude API surface without a separate Anthropic contract, the company wrote. The AWS rollout follows an April agreement that covers up to five gigawatts of Trainium compute over ten years and accompanies an Amazon investment Anthropic says exceeds $5 billion.

Legal practitioners and market participants note the change raises questions about whether entire chains of secondary buyers could be removed from the cap table and how courts will treat transfers made through intermediaries. Delaware law allows courts to apply equitable defenses in disputes over stock transfers and corporate records; the bylaw’s “void” language will likely be central in any litigation.