Anthropic has issued a pointed public warning about the proliferation of unauthorized stock sales and investment scams, declaring that any transfer of its shares without board approval is void and will not be honored on the company's books.
"Any sale or transfer of Anthropic stock, or any interest in Anthropic stock, that has not been approved by our Board of Directors is void and will not be recognized on our books and records," the company stated in a notice published on its help center.
The statement arrives at a moment of extreme investor enthusiasm for the Claude AI maker. According to TechCrunch, Anthropic has received multiple preemptive offers to raise around $50 billion at a valuation between $850 billion and $900 billion. Meanwhile, on secondary markets like Forge Global, the company's implied valuation recently crossed $1 trillion, according to a Business Insider report. That velocity is unusual even by AI standards.
The Mechanics of Voided Transfers
Anthropic's bylaws restrict the transfer of both preferred and common stock. According to the company, any transaction without explicit board approval simply does not count. The purported buyer would not be recognized as a stockholder and would hold no equity rights in the company. Special purpose vehicles (SPVs) are also explicitly prohibited. The company says offers to invest through an SPV are void under its transfer restrictions.
This creates an uncomfortable reality for would-be investors seeking exposure to one of AI's fastest-growing companies. Several secondary market platforms advertise Anthropic shares, but whether those instruments confer actual ownership is a separate question. On Hiive, accredited investors can find listings, though as one platform disclaimer notes, "most direct stock transfers must be approved by Anthropic itself."
Red Flags
The company's warning outlines specific indicators of fraud. According to Anthropic, investors should be suspicious of anyone who contacts them unsolicited via email, social media, or messaging apps; claims to have exclusive or limited-time access to shares; requests payment via cryptocurrency, wire transfer, or other hard-to-trace methods; applies pressure to invest quickly; claims to have structured a deal to avoid company restrictions; or cannot produce documentation of board approval.
"Any third party claiming to sell Anthropic shares to the general public—whether through direct sales, 'forward contracts,' tokenized securities, or other mechanisms—is likely either engaged in fraud or offering an investment that may have no value due to our transfer restrictions," Anthropic states.
Why Now?
The timing makes sense. Anthropic closed a $30 billion Series G round in February 2026 at a $380 billion valuation. The company has reportedly crossed $30 billion in annualized revenue, up from roughly $9 billion at the end of 2025. With revenue tripling in a single quarter and a frontier position in AI safety research, retail investor demand is intense.
But Anthropic remains a private company. Unlike publicly traded stocks, private shares do not trade on regulated exchanges. Retail investors are not legally permitted to invest directly. This creates fertile ground for scams. The generative AI market is projected to reach $1.3 trillion by 2032, according to Bloomberg Intelligence. That kind of hype attracts opportunists.
Anthropic is reportedly considering an IPO as early as October 2026, with Goldman Sachs and JPMorgan advising. Until then, investors eager for exposure have limited legitimate options, such as funds like ARK Venture Fund or Fundrise's Innovation Fund that hold Anthropic stakes.
The company's message is clear: if someone offers you a way to invest in Anthropic directly, assume it is invalid.
