Anthropic, PBC, the developer of the Claude AI models, filed to list on Nasdaq on 26 October 2026, and its prospectus states that each of its seven co-founders has pledged to dedicate 80% of their personal equity in Anthropic to philanthropic causes. According to Fortune, the filing calls the pledges “voluntary, revocable expressions of each cofounder’s philanthropic intent”, not legal obligations. The same filing gives the co-founders 50.1% of the votes through a single share and lets a trust elect most of the board.
It illustrates three questions for wealthy families: does a promise to give bind you, how do founders keep control while giving shares away, and what changes when a trust picks the board?
Where Anthropic’s Listing Stands on 8 November 2026
Anthropic applied to list its Class A shares on the Nasdaq Global Select Market under the symbol ANT; the cover names 22 underwriting banks, Goldman Sachs and Morgan Stanley first. First-half 2026 revenue was $16.29bn, against $1.16bn a year earlier. An amendment filed on 2 November added third-quarter results but left the price range and share count blank. On 2 November Renaissance Capital, an IPO research firm, said a listing was anticipated the week of 16 November; the company has not announced a date.
Does the Co-Founders’ 80% Pledge Bind Them?
The seven are Dario Amodei, Daniela Amodei, Tom Brown, Jack Clark, Jared Kaplan, Sam McCandlish and Chris Olah. Fortune’s table of their holdings as of 30 September 2026 adds up to about 1.69bn shares, roughly 10% of the company, including options and restricted stock units vesting within 60 days. At $58.90, the split-adjusted price of the Series H funding round, that is about $99.3bn, and 80% of it about $79.4bn, by our calculation.
Fortune reports that timing, amounts and recipients are undecided; gifts may go through donor-advised funds, charities or private foundations. These vehicles bind in different ways:
- A public pledge states an intention. On the filing’s own terms, it can be revoked.
- A donor-advised fund is an account run by a charity. The IRS says that once a donor contributes, the charity has legal control; the donor keeps advisory privileges over grants and investments. Fortune notes that Dario Amodei also votes, under proxy agreements, 4.6m shares in donor-advised funds that he no longer owns.
- A will usually takes effect only at death and can be rewritten until then, so a gift promised in it is not final.
How One Class F Share Keeps 50.1% of the Votes
Each Class A share has one vote. Just before the offering, Anthropic will issue one Class F share to the Founder LLC, whose initial sole members are the seven co-founders. It carries 50.1% of the total voting power on matters put to shareholders generally, including the election of directors not chosen by the trust, and no economic rights (prospectus). Because the 50.1% is measured at each record date, new share issues do not, by our reading, reduce it.
According to Fortune, a co-founder stays in the Founder LLC while holding at least 2% of the Class A shares they held at the IPO, so one could give away 98% of their stake and still help direct the 50.1%. Fortune says the filing warns that as gifts are made, the founders’ economic interest shrinks while their voting control stays the same.
Others get money without votes. Class N shares have no votes except where the law requires; the filing says their holders are mainly strategic partners, and Amazon Web Services is to receive them at the offering. Anthropic has also put 846,840,960 Class N shares, 5% of fully diluted shares as of 30 June 2026, into a subsidiary, Anthropic Public Benefit Fund, LLC, a block Fortune values at about $49.9bn. Compare Meta’s non-voting Class C shares.
What It Means When a Trust Elects the Board
The third layer is the Long-Term Benefit Trust, intended to have five financially disinterested trustees. As sole holder of Class T stock, which has no general vote, it elects and removes the Class T directors, who will form a majority of the board.
The result is a three-way split: economic value spread across many holders, ordinary votes in the founders’ company, and most board seats chosen by trustees. Families use similar separations, as with the charitable trusts that own most of Tata Sons; our guide to holding companies, trusts and foundations explains the tools.
What to watch
- An amended filing with a price range and share count.
- The founders’ 180-day lockup, which, Fortune reports, Goldman Sachs and Morgan Stanley can waive early.
- When, and through which vehicles, the co-founders give the pledged shares.
A fair caveat
The dollar values use a private funding-round price, not a market price. We could not read every page of the prospectus: the pledge wording, the 2% rule and the co-founders’ share counts come from Fortune’s reading of it. Rules for donor-advised funds, foundations and wills differ by country.
Questions to bring to your advisors
If we announced a plan to give, would we want it to bind us, and which vehicle would make it final? If family members give away or sell most of their shares, who should keep the votes, and on what conditions? Should independent trustees choose some of our directors? These are questions to bring to your advisors, not advice.
