Anthropic says unapproved share sales are void: what it means for you

What the page says

Anthropic's page on unauthorized stock sales was first published on 11 February 2026 and updated on 29 June 2026.^[1] Its core points, in its own words:

• Any sale or transfer of Anthropic stock, or any interest in Anthropic stock, that its board hasn't approved "is void and will not be recognized on our books and records."^[1]
• "We do not permit special purpose vehicles (SPVs) to acquire Anthropic stock and any transfer of shares to an SPV are void under our transfer restrictions."^[1]
• Anyone selling Anthropic shares to the public "whether through direct sales, 'forward contracts,' tokenized securities, or other mechanisms" is likely offering an investment that may have no value.^[1]
• "If someone offers you a way to participate, even on an indirect basis, in an investment in Anthropic, assume that it is invalid."^[1]

Who it affects

The warning doesn't name PreStocks or any other token issuer; it covers the mechanisms in general.^[1] When it was widely reported in May 2026, the ANTHROPIC token fell 34% in a week, and PreStocks said its live tokens remained fully backed under its terms.^[5][6]

The firms it named

In May 2026 Anthropic listed eight firms it said were not authorized to buy or sell its shares: Open Door Partners, Unicorns Exchange, Pachamama, Lionheart Ventures, Hiive (new offerings), Forge (new offerings), Sydecar and Upmarket.^[2][7] On 30 Sep 2026 the list named Unicorns Exchange only, and the page says removing a firm doesn't mean Anthropic recognizes or approves any related investment vehicle.^[1]

The red flags Anthropic lists

Anthropic tells people to be especially careful when someone:^[1]

• contacts you unsolicited by email, social media or a messaging app offering its shares;
• claims "exclusive" or "limited-time" access;
• asks for payment in cryptocurrency, by wire or another hard-to-trace method;
• pressures you to invest quickly;
• says the deal was structured to get around the company's restrictions; or
• can't document board approval for the transfer.

The SEC's investor alert on pre-IPO scams makes similar points, and in August 2026 the SEC charged a boiler-room operator who raised more than $74 million from retail investors for pre-IPO funds.^[8][9]

Other companies say the same

OpenAI's policy says its equity can't be transferred without its written consent, and lists SPV investments, tokenized interests and forward contracts among the unauthorized routes.^[3] Anduril says any offer to invest in it that doesn't come from or through Anduril "is very likely a scam".^[4]

If you already hold something

Anthropic tells investors to validate any purported Anthropic investment independently, and points to the SEC for reporting fraud and to Investor.gov for investor alerts.^[1] If you hold a token, Is PreStocks safe? covers what backs it and what you can check yourself.