OpenAI has issued a public warning that any direct or indirect transfer of its equity made without prior written consent is void. The company said the restriction covers not only outright share sales, but also SPV structures, tokenized interests tied to holdings, forward contracts, and other arrangements that pass on the economic exposure of OpenAI shares. It also warned that such transactions may breach transfer restrictions and could expose participants to liability under U.S. federal or state securities laws.
OpenAI explicitly lists four prohibited structures
The statement, published on the company’s policy page on the 12th, says OpenAI equity is subject to transfer restrictions. Before written approval is obtained, any direct or indirect transfer, pledge, encumbrance, or similar disposition is treated as invalid. OpenAI specifically identified four forms currently circulating in the market: direct sales of OpenAI shares; investments into SPVs that hold OpenAI stock; tokenized interests representing OpenAI equity or SPV interests; and forward contracts or other derivatives linked to the economic benefits of those shares.
The company’s position leaves little room for interpretation. OpenAI said it will “actively enforce” the transfer restrictions applicable to all direct and indirect equity sales, putting market participants on notice that complex wrappers designed to create exposure to its valuation will not be recognized by the company.
Scarcity and valuation fueled a secondary market
According to the source material, OpenAI’s latest valuation reached $850 billion after its new financing round. That combination of scale and limited access has helped build a gray secondary market around the company’s shares. In a common setup, an institution holding early OpenAI shares places them into an SPV and raises money from outside investors. Those investors do not own OpenAI stock directly; instead, they hold interests in the SPV and gain valuation-linked exposure.
Some structures go much deeper. In nested “SPV-on-SPV” arrangements, the original shares are layered through multiple legal entities, creating substantial distance between the underlying asset and the end holder. Tokenization adds another layer by putting those interests on-chain, with the pitch that tradable tokens can introduce liquidity that private-company equity normally lacks.
Investors face validity, compliance and rescission risk
For buyers, the risks described in OpenAI’s statement operate on at least three levels. First is the validity of the equity itself. OpenAI said transactions that violate its transfer restrictions may result in the underlying equity being declared invalid. A buyer may pay real money and still end up without a stake recognized by the company, including in an IPO or liquidation scenario.
Second is securities-law compliance. The source notes that transfers of private-company securities in the United States are constrained by rules including Rule 144 under the Securities Act of 1933. If a transfer is made without registration or a valid exemption, both sides of the trade may face legal exposure. Third is the risk of rescission. If regulators step in, a transaction could be unwound, and recovery of funds may depend on the SPV’s jurisdiction and the actual condition of the underlying assets. In a nested structure, tracing and enforcing claims can become far more difficult.
The source also notes that Anthropic recently told Menlo Ventures that participation in its new financing round had to be made directly with the firm’s own capital rather than through an SPV. With two leading AI companies tightening access routes at roughly the same time, the response to gray-market equity circulation is becoming harder to ignore.

