Anthropic Names 8 Platforms Selling Unauthorized Shares, Warns Investors the Transactions Are Void

Anthropic Names Eight Platforms Selling Unauthorized Shares

Anthropic updated its website this week to name eight firms it says are selling or facilitating access to its shares without permission. The list: Open Door Partners, Unicorns Exchange, Pachamama Capital, Lionheart Ventures, Hiive, Forge Global, Sydecar, and Upmarket.

According to Anthropic's support page, any sale or transfer of its stock offered by these firms "is void and will not be recognized on our books and records."

The timing is notable. Anthropic is reportedly exploring a funding round that could value it at $900 billion, according to Bloomberg News. At that valuation, investor demand is fierce. Secondary market brokers told TechCrunch last month that Anthropic stock is "one of the hardest to source" in the entire private market. That combination of scarcity and demand has made the space attractive to bad actors.

The Platforms Respond

Forge Global says it was included by mistake. A Forge spokesperson told TechCrunch: "We are working with Anthropic to remove Forge's name from this alert. Forge does not facilitate transactions in any private company's shares without the explicit approval of the company."

Sydecar says it only plays an administrative role and "requires sponsors to attest that they have reviewed relevant documents relating to the transferability of shares" before anything moves forward.

Hiive's spokesperson Dakota Betts told TechCrunch the firm "invested heavily in legal, compliance, and diligence infrastructure from the beginning, and all share transfers facilitated by Hiive are approved by the issuer."

Three of the eight flagged firms dispute Anthropic's characterization. Anthropic's position remains unchanged: if they didn't explicitly authorize it, it doesn't count.

Why This Market Exists

Private companies are staying private longer. The IPO window has been mostly shut for two years. Employees and early investors who want liquidity have few options except secondary markets.

That gap created an industry — some legitimate, some questionable, some operating in a legal gray zone using special purpose vehicles (SPVs), tokenized securities, or derivative contracts that track a private company's valuation without actually conveying ownership.

Crypto exchange OKX, according to TechCrunch, has spun up products offering exposure to AI company shares through pre-IPO perpetual futures contracts — derivative instruments that track value but give investors zero actual equity. They're betting on a number, not buying a piece of a company.

Anthropic has been warning about "stock scams" involving fake share certificates for some time. This week's update named specific firms.

The Broader Strategy

Anthropic is simultaneously cracking down on unauthorized capital flows around its equity while aggressively monetizing its technology inside one of the most lucrative professional sectors in America. Both moves point to the same direction: a company preparing for a major liquidity event.

The Legal AI Push

Also on Tuesday, Anthropic announced an expansion of Claude for Legal — a law-focused product launched earlier this year. The new tools automate document search and review, deposition prep, case law research, document drafting, and more. They work across commercial, privacy, corporate, employment, and AI governance law.

New MCP connectors integrate Claude directly into software law firms already use — DocuSign for document management, Box for file search, and Thomson Reuters' Westlaw for legal research.

This targets Harvey, which raised $200 million at an $11 billion valuation in March, and Legora, which closed a $600 million Series D last month and hired Jude Law for its ad campaign.

The legal AI market has real economics. Law firms bill by the hour, armies of associates do clerical work, and the value of automation is obvious. The firm that captures this workflow owns a significant recurring revenue stream.

Liability Questions

At least a dozen lawyers have been sanctioned or fined for using AI to generate court filings with fake citations. California issued a fine against an attorney who used ChatGPT to draft an appeal full of fabricated quotes. Federal judges have been caught using AI-generated content themselves.

Anthropic is charging into this market while that liability cloud persists. If Claude hallucinates a case citation that damages a client's lawsuit, Anthropic's reputational exposure is significant — regardless of disclaimers in the terms of service.

What's Next

If you bought Anthropic shares through any of the eight platforms named this week, the company has made clear: those shares don't count. Anthropic is building a $900 billion enterprise with every reason to control exactly who owns a piece of it.