Anthropic Commits 5% of Its Shares to a New Public Benefit Fund, With More Tied to Valuation

Anthropic on October 18, 2026 said it will commit 5% of its shares to the Anthropic Public Benefit Fund, a new entity whose stake can grow as the company does. The board can add 2% more for every 50% rise in Anthropic's value above a set baseline, and the first 5% still needs stockholder approval, the company said in its announcement.

The plan arrives weeks before a stock market listing that CNBC reported on October 13 could be worth $2 trillion, roughly double the $965 billion post money valuation of the private AI funding round Anthropic announced on May 28, 2026. Anthropic is a public benefit corporation, and it says most of its mission work stays inside the company, while the fund is meant to pursue that mission in new ways.

What exactly did Anthropic announce?

Anthropic announced on October 18, 2026 that it is setting up the Anthropic Public Benefit Fund as a wholly owned limited liability company and committing 5% of its shares to it, subject to stockholder approval. It chose an LLC over a 501(c)(3), the US tax status for charities, so it can move between different forms of giving, the company said.

Anthropic gives two examples of what the fund might do: large donations to traditional nonprofits, or direct distributions to specific groups of people. It names the effect of AI on workers as one area, noting it has already committed $200 million to studying and addressing it. That money went to its Economic Futures Research Fund, which Anthropic said on July 22, 2026 would mainly back outside research projects of $5 million to $30 million.

None of the Anthropic equity held by the fund will be used for lobbying or political giving, in the US or abroad, the company said. Research on AI safety and interpretability, applied biomedical research and discounts on Claude for nonprofits and scientific institutions stay inside the company, because they have both a public benefit side and commercial value.

How large could the fund's stake become?

The fund starts at 5% of Anthropic's shares and can gain 2 more percentage points, at the board's discretion, for every 50% increase in the company's value above a baseline that Anthropic has not disclosed (Reuters via Yahoo Finance). Anthropic says it will share the valuation milestones, and the fund's structure and governance, in the coming months.

At the May valuation of $965 billion, a 5% stake works out to about $48 billion, by this site's arithmetic. At the $2 trillion that CNBC reported as a possible listing value, which it tied to Anthropic's latest revenue figures, it would be about $100 billion. Both figures are rough: the fund receives shares, not cash, and their worth will depend on the share count after the IPO and on the market price.

If the 50% steps are counted from the baseline, a doubling in value would allow two steps and a stake of up to 9%, again by this site's arithmetic. Anthropic has not said whether each step is measured from the baseline or from the previous milestone.

Anthropic presents the growing stake as a choice about pay. Tech companies commonly offer executives compensation awards that escalate as the company grows, and Anthropic says it is directing that equity to the public benefit instead.

How does it compare with the OpenAI Foundation?

The new fund starts far smaller than the stake held by the nonprofit that controls OpenAI: OpenAI's structure page says the OpenAI Foundation owns 26% of OpenAI Group, about $130 billion at the current valuation, plus a warrant for more shares. The two vehicles also differ in how the stake grows and in what each company says about control.

The growth triggers work differently. OpenAI's warrant pays out only after a tenfold rise over 15 years, while Anthropic's fund can grow in smaller steps from the first 50% gain, though each step depends on a board decision.

Control at Anthropic is set elsewhere. Reuters reported on September 28, 2026, citing a draft IPO filing, that the seven co-founders will hold 50.1% of the voting power after the listing through a new Founder LLC (The Star).

Where does the fund fit in Anthropic's public benefit commitments?

Anthropic says that with the new fund, roughly 20% of its shares will be dedicated to the public good, before any shares added at valuation milestones. The rest of that figure comes from earlier pledges: at founding, the co-founders pledged to donate 80% of their equity, and an equity donation match lets employees pledge shares that Anthropic matches, with about half of employees taking part.

So the 20% combines shares the fund will hold with shares that co-founders and employees have pledged to give away, plus Anthropic's matches. Anthropic does not break the figure down by source.

The announcement also ties into the reporting a public benefit corporation owes its stockholders. Under Delaware law, such companies must report on progress toward their stated mission at least once every two years, according to a Reuters explainer published in late September. Anthropic says it will report on its progress against its mission in an upcoming public benefit report.

What we don't know yet

• The baseline valuation and the milestone schedule, which Anthropic says it will publish in the coming months.
• Who will run the fund, and whether its shares will carry votes.
• When stockholders will vote on the 5% commitment, and whether that happens before the IPO.
• How much the fund will give out each year, to whom, and whether it will sell shares to do so.