Anthropic Warns Tokenized Stock Buyers as Pre-IPO Tokens Fall 45%

TLDR

• Anthropic said unapproved sales or transfers of its private stock are void.
• The warning covers SPVs, forward contracts, tokenized securities and similar products.
• Anthropic-linked PreStocks on Solana reportedly fell 45% within 24 hours.
• Token holders are not listed on Anthropic’s official cap table or shareholder records.
• The case raises legal and valuation risks for tokenized pre-IPO equity products.

Anthropic has warned investors that unauthorized third-party purchases of its private stock, including tokenized products and special purpose vehicle structures, are void and will not be recognized by the company.

The artificial intelligence company behind Claude said any sale or transfer of Anthropic stock, or any interest in that stock, requires proper approval. Transactions made without approval from its board will not appear on its official shareholder records.

The warning directly affects tokenized products that claim to offer exposure to Anthropic’s private shares. Some crypto platforms have listed pre-IPO style tokens linked to Anthropic, allowing traders to speculate on the company’s private-market value without owning actual shares.

Anthropic 宣布要彻底切断了所有未经授权的二级股权销售渠道，包括 SPV、远期合约甚至是代币化债权。看到了一个分析，说这背后的逻辑是，公司要夺回 IPO 的定价主权。如果二级市场提前流出了疯狂的隐含估值，就会破坏公司在 IPO 轮次的议价能力，让中间商卷走稀缺性溢价。

Anthropic…

— Feng Liu (@fishkiller) May 13, 2026

After the warning, Anthropic-linked PreStocks on Solana reportedly fell 45% within 24 hours. The implied valuation attached to those tokens dropped from about $1.4 trillion to roughly $762 billion, removing about $638 billion in notional value from the market.

Anthropic Says Unauthorized Transfers Are Void

Anthropic said it does not permit special purpose vehicles to acquire its stock unless approved under its transfer rules. The company also said any transfer of shares to an unauthorized SPV is void under its restrictions.

The company warned that offers to invest in past or future Anthropic funding rounds through an SPV are prohibited. It also said any third party claiming to sell Anthropic shares to the public through direct sales, forward contracts, tokenized securities or similar tools may be offering an investment with no value under its stock-transfer rules.

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Private companies often restrict who can buy, sell or hold their shares. These limits are used to manage shareholder records, comply with securities rules and control ownership before a possible public listing.

Anthropic’s warning makes clear that token holders do not appear on the company’s cap table. A cap table is the official record of who owns a company’s equity. If a tokenized product is not recognized by the issuer, buyers may hold only a claim against the platform or structure that sold the product, not equity in the company itself.

Tokenized Pre-IPO Market Faces Pressure

The Anthropic warning arrives as tokenized pre-IPO products gain attention in crypto markets. These products have offered exposure to private companies such as Anthropic, OpenAI, SpaceX and other high-profile firms.

The structures vary. Some products are synthetic contracts that track an implied private-company valuation. Others claim exposure through SPVs, secondary-market holdings or reserve-backed arrangements.

Synthetic products may not transfer actual shares, but they can still create trading prices that look like market valuations. SPV-based products may face more direct conflict with private company transfer restrictions if the issuer does not approve the structure.

OpenAI has issued similar warnings about unauthorized stock exposure. Its tokenized counterparts also reportedly fell sharply after the company rejected the idea that those products represented valid ownership.

The price moves show how quickly tokenized private-market products can lose value when the underlying company refuses to recognize them.

Legal and Valuation Risks Increase

Legal specialists have said private companies may challenge tokenized stock products if they violate shareholder agreements, investor rights agreements, bylaws or transfer restrictions.

Crypto lawyer John Montague previously said issuers have the right to control transfer terms. That view suggests companies may take legal action against platforms or intermediaries that sell unauthorized exposure to restricted shares.

The Anthropic case also raises valuation concerns. Before the selloff, tokenized markets suggested Anthropic was worth more than many of the world’s largest public companies, even though the platform’s total assets were far smaller than the implied valuation.