Ownership
Who owns Anthropic — and what is actually public
Anthropic is owned by its founders and employees, Amazon and Alphabet as the two largest strategic investors, and a group of institutional funds — but no filing states a percentage, and exact stakes appear first in the principal stockholders table of a public S-1S-1The public registration statement containing financials, risk factors and the principal stockholders table.No public Anthropic S-1 exists on EDGAR. Until one appears, every financial detail in circulation is second-hand.FULL DEFINITION →.
Amazon is reported as the largest external owner, but no percentage is public. The first authoritative figure appears in the principal stockholders table of the public S-1.
Unverified. Widely reported at about 14 percent as of early 2025, but no Alphabet 10-K or 10-Q we could find states a percentage.
Institutional money committed in 2026: $100B.
How much of Anthropic does Amazon own?
Amazon is reported to hold the largest outside stake in Anthropic after more than $8 billion invested, followed by Google at around 14 percent as described in early 2025 — and both holdings are described as non-voting or limited-voting, so neither position carries board control.
Amazon's position is the largest of the two by capital committed — more than $8 billion across successive tranches, disclosed in Amazon's own filings — but Amazon has never stated a percentage. Google's stake was described at around 14 percent in early 2025 court filings and reporting; that figure predates two subsequent primary rounds and has been diluted by an unstated amount since.
Who are Anthropic's investors?
The May 2026 Series H was led by Altimeter, Dragoneer, Greenoaks and Sequoia, alongside strategic holders Amazon and Google, with roughly $100 billion of institutional capital committed to the company in 2026 alone.
EVERY FUNDING ROUND, DATED AND SOURCED →What is the Long-Term Benefit Trust?
The Long-Term Benefit Trust is an independent body that elects a portion of Anthropic's board without holding any economic ownership — it can appoint directors but owns no shares and receives no return.
Anthropic is a Delaware public benefit corporationPublic Benefit CorporationA Delaware corporate form allowing directors to weigh a stated mission alongside shareholder return.Anthropic is a PBC. That is a governance fact to read before assuming profit maximisation is the board's only duty.FULL DEFINITION →, so its directors are bound by charter to weigh the stated public benefit — the safe development of AI — alongside stockholder return. The Trust sits on top of that: a body of independent trustees holding a special class of stock whose only right is to elect a growing share of the board over time.
It exists to keep the mission from being priced away. Because trustees hold no economic interest, a bidder cannot buy their votes, and an investor cannot acquire them by writing a larger cheque. What the Trust's rights survive contact with a public listing is one of the material questions a public S-1 answers.
What is Anthropic's cap table?
The cap table is known by holder and by round but not by percentage: only Google's roughly 14 percent has ever been stated publicly, and every other stake below is a named holder of unstated size.
Not public — disclosed in the public S-1. Only the principal stockholders table of a public registration statement gives exact holdings, share classes and votes per share.
| Holder | Type | Reported stake | Invested | Source |
|---|---|---|---|---|
| Founders, employees and early holders | Insiders | Not public | — | — |
| Amazon | Strategic investor | Not public | $8B+ | sec.gov |
| Alphabet / Google | Strategic investor | 14% | $3B+ | Unverified — no Alphabet SEC filing states a percentage |
| Altimeter, Dragoneer, Greenoaks, Sequoia | Growth investors | Not public | — | anthropic.com |
| ICONIQ, Fidelity, Lightspeed | Growth investors | Not public | — | anthropic.com |
| Spark Capital, Menlo Ventures | Venture investors | Not public | — | No company announcement for Series C/D; press reports at the time |
The round history behind this register — who led, what was raised and at what post-moneyPost-money valuationA company's value including the money just raised in the round.Anthropic's Series H closed on 28 May 2026 at $965B post-money.FULL DEFINITION → — is one table, and it lives on the valuation page. What this page answers is a different question: no filing states a percentage.
EVERY FUNDING ROUND, DATED AND SOURCED →Any percentage quoted elsewhere is an estimate — including the widely repeated 14 percent for Google, which no Alphabet filing states — so we mark it unverified and publish no estimate of our own.
WHAT ONLY THE S-1 DISCLOSES →Do Amazon and Google control Anthropic?
No — neither Amazon nor Google has voting control of Anthropic: their investments were structured as non-voting or limited-voting stock, board seats sit with founders and Trust-elected directors, and the public benefit corporation charter binds directors to the stated mission as well as to stockholders.
The structure separates money from votes in three places. Strategic capital came in as non-voting or limited-voting stock. Board seats are held by founders and by directors the Long-Term Benefit TrustLong-Term Benefit TrustA trust that appoints board seats at Anthropic without holding economic value in the company.It means board control and share ownership are not the same thing here: owning stock would not buy proportional influence over the board.FULL DEFINITION → elects. And the public benefit charter gives directors an explicit duty that a purely financial holder cannot override by vote.
Commercial leverage is a separate question from control. Amazon is both a large holder and a major compute supplier and distribution channel; Google is both a holder and a compute supplier. That is influence a cap table does not show, and it is disclosed as a related-party matter in a public S-1, not as ownership.
WHAT ONLY THE S-1 DISCLOSES →Every funding round, dated and sourcedIs there an Anthropic stock?What Amazon and Alphabet shareholders indirectly hold
One email the minute the S-1 hits EDGAR.
NO TRACKING · ONE-CLICK DELETE · PURPOSE: S-1 NOTIFICATION
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