Anthropic started in 2021 as a breakaway from OpenAI, built by a group of researchers who wanted a safety-first AI lab. Five years later, it’s the most valuable AI startup in the world at $965 billion, having quietly passed OpenAI in May 2026.
But Anthropic’s ownership works very differently from OpenAI’s. There’s no neat, publicly disclosed cap table here. Anthropic is a private Public Benefit Corporation that has never released exact equity percentages, and its control structure deliberately separates “who owns the most shares” from “who actually steers the company.”
This article breaks down what’s actually known about who owns Anthropic in 2026, how much each major stakeholder holds, and why the Long-Term Benefit Trust matters more than any single investor’s check.
Current Anthropic Ownership Structure (2026)
Unlike OpenAI, Anthropic has never published a full ownership breakdown. What we know comes from funding announcements, court filings, and investor disclosures. Here’s the most accurate picture as of June 2026:
- Founders & employees: The largest collective ownership block. The seven co-founders plus current and former employees hold the majority of equity, though exact percentages aren’t disclosed.
- Amazon: Largest single outside investor. ~$8 billion invested, with a commitment of up to $25 billion more. Estimated stake in the mid-teens percent range.
- Google (Alphabet): 14% per 2025 court filings, contractually capped at 15%, with no voting rights or board seats.
- Nvidia: Committed up to $10 billion (November 2025); estimated low-single-digit stake.
- Microsoft: Committed up to $5 billion (November 2025); low-single-digit stake.
- Institutional & VC investors: ICONIQ, Lightspeed, Sequoia, GIC, Coatue, Fidelity, Menlo Ventures, Spark Capital, Salesforce Ventures (~$5B stake), MGX, Qatar Investment Authority, Altimeter, Dragoneer, Greenoaks, and dozens more.
The company is valued at $965 billion following its May 2026 Series H round. Anthropic confidentially filed for an IPO on June 1, 2026, which means the precise cap table may finally become public when the S-1 is unsealed.
A key caveat: Anyone publishing exact founder or employee percentages for Anthropic is estimating. The company has 94+ investors across 18 funding rounds, and the only externally verified outside-investor figure is Google’s 14% from a 2025 antitrust court filing.
Anthropic’s Corporate Structure: PBC + Long-Term Benefit Trust
This is the part that makes Anthropic genuinely different from most startups.
Anthropic is organized as a Delaware Public Benefit Corporation (PBC). That means its directors are legally required to balance shareholder returns against its public mission of developing safe AI, they can’t be sued purely for leaving money on the table in service of safety.
Sitting on top of that is the Long-Term Benefit Trust (LTBT), designed by Anthropic’s founders with outside counsel from Wilson Sonsini. The Trust is a five-member independent body whose members hold no financial stake in Anthropic. Over time, the LTBT gains the power to elect and remove a majority of Anthropic’s board of directors.
The logic: even if commercial investors own enormous amounts of equity, they can’t simply take control of the board and override the safety mission. The Trust has already used this power—appointing directors like Netflix co-founder Reed Hastings and former Novartis CEO Vas Narasimhan.
The failsafe (and the catch): Per Anthropic’s incorporation documents, a supermajority of shareholders can amend the rules governing the LTBT without the Trust members’ consent. Anthropic describes this as a safeguard in case the structure turns out to be flawed. Critics note it theoretically leaves a door open for large shareholders to force governance changes—though Anthropic maintains the practical hurdles make this near-impossible.
This is the opposite of a typical cap table story. At Anthropic, control is not purely a function of who owns the most shares.
Who Founded Anthropic?
Anthropic was incorporated in January 2021 by a group of senior researchers and executives who left OpenAI over disagreements about AI safety and the pace of commercialization. Anthropic publicly identifies seven co-founders:
- Dario Amodei (CEO) — former VP of Research at OpenAI, led GPT-2 and GPT-3 development, co-invented RLHF
- Daniela Amodei (President) — Dario’s sister, former VP of Operations at OpenAI, previously at Stripe
- Tom Brown — lead author on the GPT-3 paper
- Jack Clark — AI policy lead, head of policy
- Jared Kaplan — theoretical physicist, chief science officer
- Sam McCandlish — research lead, scaling laws
- Christopher Olah — interpretability research pioneer
(Some sources also count Ben Mann among the founding group, which is why you’ll occasionally see “eight co-founders.”)
All seven became billionaires in March 2025 when a $3.5 billion round valued Anthropic at $61.5 billion. In January 2026, the co-founders collectively pledged to donate 80% of their personal wealth to philanthropy aimed at addressing AI-driven inequality—a pledge worth more than $21 billion at the time, announced alongside Dario Amodei’s essay “The Adolescence of Technology.” Forbes estimated Dario’s personal net worth at roughly $7 billion in early 2026.
Amazon: Anthropic’s Largest Outside Investor
Amazon is the biggest single external backer of Anthropic, but it took a winding path to get there.
Investment timeline:
- September 2023: Initial $1.25 billion investment
- March 2024: Additional $2.75 billion, bringing the total to $4 billion
- November 2024: Topped up to a total of $8 billion invested
- April 2026: Agreed to invest up to $25 billion more as part of an expanded infrastructure deal
That latest agreement could eventually push Amazon’s total commitment past $30 billion. In exchange, Anthropic committed to spending more than $100 billion on AWS technologies over 10 years, including Amazon’s custom Trainium AI chips (securing up to 5 gigawatts of compute capacity).
Amazon’s exact stake isn’t disclosed, but most analysts estimate a mid-teens percentage. The position is already enormously profitable on paper: in Q1 2026 alone, Amazon booked $16.8 billion in pre-tax gains from its Anthropic holding, including $12.3 billion from revaluing the stake after the Series G round.
Crucially, like Google, Amazon’s investment comes with limited control—no governance veto over Anthropic’s safety mission.
Google: 14% and Capped
Google (Alphabet) is the one outside investor whose exact stake is publicly verified. Thanks to legal filings Anthropic submitted in a Google antitrust case, accidentally sent to The New York Times in unredacted form, we know that:
- Google owns 14% of Anthropic
- Google is contractually capped at owning no more than 15%
- Google holds no voting rights, no board seats, and no board observer rights
Google has committed substantial capital and cloud credits over time (reported commitments range up to tens of billions in combined cash and Google Cloud compute). The arrangement reflects Anthropic’s deliberate dual-cloud strategy: it runs workloads on both AWS and Google Cloud to avoid dependence on any single provider.
In a notable 2025 development, the U.S. Justice Department dropped a proposal that would have forced Google to divest its stakes in generative AI companies—allowing Google’s 14% in Anthropic to remain intact.
Microsoft and Nvidia Join In (2025)
In a surprising November 2025 move, two more giants entered Anthropic’s cap table:
- Nvidia committed up to $10 billion
- Microsoft committed up to $5 billion—despite already owning 27% of Anthropic’s rival OpenAI
The combined $15 billion deal tied Anthropic closer to both companies commercially. Anthropic agreed to purchase $30 billion in Microsoft Azure cloud capacity and to adopt Nvidia’s latest chip architectures. As Microsoft CEO Satya Nadella put it, the companies are “increasingly going to be customers of each other.”
Both stakes are believed to be in the low-single-digit percentage range.
Anthropic’s Funding History and Valuation Climb
Few companies in history have repriced this fast. Here’s the trajectory:
- 2021: Founded; early backing included a $580M round (with now-infamous FTX/Alameda involvement, later divested via bankruptcy proceedings)
- 2023: Google, Spark Capital, and others invest; Amazon partnership begins
- March 2025: $3.5 billion round at $61.5 billion (led by Lightspeed)
- September 2025: Series F, $13 billion at $183 billion (led by ICONIQ)
- February 2026: Series G, $30 billion at $380 billion (led by GIC and Coatue)
- May 2026: Series H, $65 billion at $965 billion (co-led by Altimeter, Dragoneer, Greenoaks, Sequoia, Capital Group, Coatue, D1, GIC, ICONIQ, and XN)
In total, Anthropic has raised roughly $125–132 billion across 18 funding rounds. The Series H is described as likely its last private raise before going public.
The valuation jump is backed by real revenue: Anthropic’s run-rate revenue crossed $47 billion by May 2026, up from $30 billion earlier in the year and just $10 billion in annual revenue the year before—driven largely by its AI coding assistant, Claude Code.
Employee Ownership and the 2026 Tender Offer
Anthropic’s roughly 2,500 employees hold a significant collective equity stake, though the company doesn’t break out the exact figure.
In February 2026, alongside its primary fundraise, Anthropic ran an employee tender offer of $5–6 billion, letting current and former employees sell shares to investors at a roughly $350 billion valuation. This gave early employees liquidity without waiting for the IPO—a common pattern at late-stage AI labs, and a sign of how much paper wealth has accumulated inside the company.
Anthropic’s Board of Directors
Because of the PBC and LTBT structure, Anthropic’s board is a mix of founders, independent directors appointed by the Trust, and investor-linked seats. As of 2026 it includes:
- Dario Amodei (CEO, co-founder)
- Daniela Amodei (President, co-founder)
- Reed Hastings (Netflix co-founder; appointed by the LTBT)
- Vas Narasimhan (former Novartis CEO; appointed by the LTBT in April 2026)
- Chris Liddell (former Microsoft and General Motors CFO)
- Yasmin Razavi (Spark Capital)
Note that the major cloud investors—Amazon and Google—do not hold board seats, a deliberate feature of Anthropic’s governance design.
The Road to IPO
Anthropic confidentially filed a draft S-1 with the SEC on June 1, 2026, kicking off what could become one of the largest public offerings in history. At its $965 billion private valuation, the company is approaching the trillion-dollar mark.
The IPO is significant for ownership transparency reasons too: when the prospectus is eventually made public, it should reveal—for the first time, the actual cap table, including precise founder, employee, and investor percentages that have been estimated until now.
Anthropic is racing rival OpenAI (valued at $852 billion in March 2026) to the public markets, alongside other 2026 AI-era listings. How the company preserves its Long-Term Benefit Trust governance as a public company will be one of the most closely watched questions in tech.
Key Takeaways on Anthropic Ownership
Here’s what matters about who owns Anthropic in 2026:
1. No single owner controls Anthropic. Ownership is split among founders, employees, cloud giants, and dozens of institutional investors—with no majority holder.
2. The founders and employees hold the biggest collective stake, but exact percentages remain undisclosed until the IPO prospectus is unsealed.
3. Amazon is the largest outside investor at ~$8 billion (with up to $25 billion more committed), holding an estimated mid-teens percentage.
4. Google owns exactly 14%—the only verified outside figure—capped at 15%, with no voting rights or board seats.
5. Governance is separated from ownership. The Long-Term Benefit Trust can elect a majority of the board, so big investors can’t simply buy control of the safety mission.
6. Microsoft and Nvidia joined in late 2025, adding $15 billion combined and binding Anthropic to Azure and Nvidia hardware.
7. The valuation went vertical—from $61.5 billion in March 2025 to $965 billion in May 2026, on the back of $47 billion in run-rate revenue.
8. An IPO is imminent. The June 2026 confidential filing should finally make Anthropic’s full cap table public.
What This Means for Anthropic’s Future
Anthropic’s ownership structure is a bet that you can raise hundreds of billions in commercial capital without surrendering mission control. The PBC framework and Long-Term Benefit Trust are designed to let Amazon, Google, Microsoft, and Nvidia fund the compute Anthropic needs, while keeping safety-focused governance insulated from pure profit pressure.
Whether that holds at trillion-dollar scale is the open question. Once Anthropic is public, quarterly earnings pressure, activist shareholders, and the LTBT’s “failsafe” amendment clause will all test how durable mission-first governance really is.
For now, Anthropic has pulled off something unusual: it’s simultaneously one of the most heavily funded companies on earth and one whose founders insist no investor can buy the steering wheel.