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Company · Philanthropy
The Anthropic Public Benefit Fund
Anthropic has put 5% of the company into a fund it owns, set aside for the public good. The stake can grow as the stock rises. Here's how it works, who runs it, and what's still undecided.
of fully diluted shares as of June 30, 2026 · Form S-1
Top-up per milestone
Up to +2%
each time the stock rises 50% past the last milestone · Anthropic
Shares pledged to public good
~20%
fund + founder pledges + employee match, per Anthropic · Anthropic
What 5% could be worth
≈ $48BLast private valuation ($965B, May 2026)5% × $965B. Our math, using the valuation reported by CNBC.
≈ $100BReported IPO target (~$2T)Estimate reported by Axios.
Illustrative only. Anthropic hasn't priced its IPO, and the fund's shares are non-voting Class N stock.
How the stake can grow
if fully granted
After the IPO, the board may add shares worth up to 2% of the company each time the stock hits a new milestone. The first milestone is 50% above the IPO price, and each one after that is 50% above the last. The board doesn't have to make any of these grants.
At IPO5.0%1.0× IPO price
Milestone 1≈ 6.9%1.5×
Milestone 2≈ 8.7%2.25×
Milestone 3≈ 10.5%3.4×
Milestone 4≈ 12.2%5.1×
Milestone 5≈ 14.0%7.6×
A milestone only counts once the stock has closed above it on at least 90 of the last 120 trading days, and its 10-day average close before the grant is also above it. Form S-1.
Our math, assuming the board grants the full 2% at every milestone and nothing else changes the share count. Each grant is 2% of the then-outstanding shares, including the fund's own, so it adds a bit less than 2 points to the fund's share.
How it works
8
An LLC, not a charity
Structure
The fund is Anthropic Public Benefit Fund, LLC, a wholly owned subsidiary dedicated to the company's stated public-benefit purpose. Anthropic says it chose an LLC over a 501(c)(3) so it can switch between different kinds of giving.
Anthropic's board directs grants and distributions until it approves a governance structure for the fund. After that, decisions are expected to move to the fund's managers.
Dario Amodei, Daniela Amodei, Jack Clark and Dr. Neil "Buddy" Shah. Shah chairs the Long-Term Benefit Trust, runs the Clinton Health Access Initiative, and was previously managing director of GiveWell.
The fund holds Class N common stock. It carries full economic rights but no general vote, and generally converts to Class A when it's sold or transferred to an unaffiliated third party.
Shares can be given to a third party, donated, or sold in a registered public offering or private placement. Anthropic mentions large gifts to traditional nonprofits and direct payments to specific groups of people as possibilities.
Anthropic points to AI's effect on the labor market. It has already committed $200 million to studying and addressing that, and says the fund can try bolder approaches.
Shares held by the fund aren't counted as outstanding for accounting purposes, so the 5% doesn't show up in pro forma per-share figures. A tax deduction comes only once shares move to a public charity, AP reports.
Anthropic says the fund, the co-founders' pledges and the employee match together put about a fifth of its shares toward the public good.
Co-founders' 80% pledge
Founders
All seven co-founders have pledged 80% of their personal equity to philanthropy. The S-1 calls the pledges voluntary and revocable, not legally binding. Their voting control through the Founder LLC doesn't change as they give.
Employees can pledge equity to donor-advised funds or nonprofits, and Anthropic matches with Class N shares. About half of employees take part. The match cost $541 million in 2025, roughly 4% of operating expenses.
Daffy Charitable Fund and Dechomai Asset Trust receive donated Anthropic shares. Under proxy agreements, Dario Amodei votes those shares at his discretion, except shares that he or his family donated.
Compiled from Anthropic's Form S-1 (filed Oct 26, 2026), Anthropic's announcement and the publications linked above. Dollar values and the growth ladder are The Big Ant's estimates, not company figures. Not investment advice.
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