Who owns Anthropic

Founders and employees. The seven co-founders hold roughly equal stakes: between about 232 million and 245 million Class A shares each, after a ten-for-one split in September 2026, the S-1 shows, and all seven are named as selling shareholders in the offering. Each has pledged to give 80% of their Anthropic equity to charity. Anthropic has paid much of its staff in equity, so insiders are thought to hold the largest single block. The company has run tender offers that let employees sell some shares to investors before the IPO, and it is reported to be planning preset selling plans for staff once it lists.

Strategic backers. Amazon and Alphabet are the largest outside shareholders, followed by later strategic investors such as Microsoft, Nvidia and AMD. Each also sells Anthropic something (chips, cloud capacity) or buys from it, which is why these stakes are as much commercial arrangements as financial bets. Court documents in 2025 put Google's stake at about 14%. The S-1 adds the caps: shares issued to Google under its 2026 agreement stop at 14.99% of Anthropic's capital, and Amazon's convertible notes stop converting at 12% of fully diluted capital, unless each chooses to waive its cap. Both hold mostly non-voting Class N shares.

Financial investors. From 2025 onwards the rounds grew too large for venture firms alone. Sovereign funds such as GIC, Temasek, QIA and MGX, crossover funds such as Fidelity, T. Rowe Price, Coatue and D1, and private-markets firms such as Blackstone and Brookfield now hold sizeable positions, alongside the early venture backers.

Amazon was Anthropic's largest outside investor by money invested before 2026. It put in $4 billion in 2023 and early 2024 and another $4 billion in November 2024, and in April 2026 agreed to invest $5 billion more, with up to $20 billion further tied to commercial milestones. In return Anthropic committed at least $110 billion to AWS through April 2036 and trains its models on Amazon's Trainium chips. Part of Amazon's money came as convertible notes, $6.2 billion of them outstanding at June 30, 2026, which convert into shares at the IPO up to its 12% cap. Amazon has no board seat.

Google took a stake in early 2023, committed $2 billion in October 2023 and added $1 billion in 2025. In April 2026 it committed up to $40 billion more: $10 billion immediately at a $350 billion valuation and $30 billion depending on performance targets. The S-1 also gives Google an option to buy up to $10 billion of shares at the IPO price, alongside the offering. Google supplies TPUs and sells Claude on Vertex AI, while its own Gemini models compete with Claude head on.

For investors this cuts two ways. Both companies record gains when Anthropic's valuation rises, and analysts have warned that the accounting can make their headline earnings look better than the underlying business. But Anthropic is a small part of companies as large as Amazon and Alphabet, so buying their shares is a diluted bet on Anthropic rather than a substitute for it.

The earliest money came from individuals worried about AI risk. Skype co-founder Jaan Tallinn and Facebook co-founder Dustin Moskovitz led the $124 million Series A in 2021. The $580 million Series B in 2022 was dominated by FTX, Sam Bankman-Fried's crypto exchange; after FTX collapsed, its bankruptcy estate sold the stake in 2024, mostly to investors in the UAE.

From 2023 the cloud companies arrived, first Google, then Amazon, each pairing equity with a compute contract. From 2025 the rounds became some of the largest private financings ever: $13 billion in the Series F in September 2025, $30 billion in the Series G in February 2026, led by GIC and Coatue, and $65 billion in the Series H in May 2026, led by Altimeter, Dragoneer, Greenoaks and Sequoia.

The full round-by-round history, with amounts and valuations, is on the valuation page.

The Long-Term Benefit Trust, an independent body whose trustees have no financial stake, holds a special class of shares that lets it elect directors. Since April 2026 its appointees have been a majority of the board. Neither Amazon nor Google has a board seat, and Google's shares carry no votes.

Ahead of the IPO, Anthropic has proposed a share class that would give the seven co-founders together 50.1% of the votes regardless of how much of the company they own, The Information reported in September 2026. Combined with the Trust, that would leave outside shareholders, including anyone who buys at the IPO, with economic exposure but limited say.

More on the structure in how Anthropic is governed.