One share of stock, held by a limited liability company called Anthropic Founders LLC, carries 50.1% of the general voting power at the company Anthropic plans to list on Nasdaq. The LLC’s seven members are Anthropic’s cofounders. What happens to a member’s vote if that member dies or becomes incapacitated is spelled out in a Founder LLC Agreement filed with the company’s S-1 on October 26: each founder files a ranked list of up to ten potential successors, and the list stays confidential, as Business Insider reported. The agreement, filed with the SEC, is the primary document; the lists it produces are not.
The seven members are CEO Dario Amodei, president Daniela Amodei, chief compute officer Tom Brown, Anthropic Institute lead Jack Clark, chief science officer Jared Kaplan, chief architect Sam McCandlish and interpretability lead Christopher Olah. An eighth person often called a cofounder, product engineering lead Benjamin Mann, is not a member: the filing states plainly that he “is not a member of the Founder LLC nor a Continuing Founder.” The LLC votes its single Class F share however a majority of its “Continuing Founders” decide. The arrangement sits alongside, and is legally separate from, the Long-Term Benefit Trust that elects most of Anthropic’s board through its own Class T share; the Founder LLC controls shareholder votes, not board seats.
Ten names, ranked, eight of them vetted
Each founder’s list can name up to ten people, in order of preference, to take their seat in the LLC if they die or are incapacitated. Eight of the ten slots carry eligibility rules: the nominee must be a current or former Anthropic employee of at least three years in a specified role (member of technical staff, a role at the Anthropic Institute, or another role the board approves) or must have spent at least three years in a senior position at a 501(c)(3) nonprofit or similar public-benefit organization, and must hold US citizenship, permanent residency or valid work authorization. The remaining two slots, used only if a founder fills all ten, carry no such eligibility test, though they still need the same approval.
shall be strictly confidential and shall not be publicly disclosed by any Member or the Company
That clause, from the Founder LLC Agreement as reported by Forbes, is why the other shareholders buying into a roughly $1.5 trillion to $2 trillion IPO will not know who stands to inherit a slice of majority control. A nominee is seated only after approval by five of the founder’s six fellow LLC members, per Forbes’ reading of the filing. Anthropic’s board can require a founder to reconsider a choice on the list; it cannot veto one that has already been approved. The company’s Nominating and Corporate Governance Committee reviews the lists but does not vote on them. None of this touches who becomes CEO: that remains a board decision, separate from the LLC’s share.
| From | To | How |
|---|---|---|
| Founder dies or is incapacitated | Ranked list of up to 10 successors (drafted in advance, kept confidential) | |
| Ranked list of up to 10 successors (drafted in advance, kept confidential) | 8 names need eligibility (3+ yrs at Anthropic or an allied nonprofit, work authorization) | |
| Ranked list of up to 10 successors (drafted in advance, kept confidential) | 2 names need no eligibility test | |
| 8 names need eligibility (3+ yrs at Anthropic or an allied nonprofit, work authorization) | Vote by the other 6 founders | |
| 2 names need no eligibility test | Vote by the other 6 founders | |
| Vote by the other 6 founders | 5 of 6 must approve | |
| 5 of 6 must approve | Successor seated as Continuing Founder | |
| Successor seated as Continuing Founder | Seat ends at 10-year mark, or sooner if too few… |
Based on Anthropic Founder LLC Agreement, filed with the SEC
Founder-controlled succession language is not new. Facebook’s 2012 IPO paperwork let Mark Zuckerberg designate a single successor by name; Meta has since revised that plan. Airbnb’s three cofounders agreed in 2020 to hand their combined voting power to the survivors if one died or was disabled, but only for nine months, after which it lapses. Anthropic’s version differs on three points, as Business Insider and Forbes both note: the list is ranked rather than a single name, it stays confidential from other shareholders rather than being disclosed in the IPO prospectus, and a successor’s seat can last up to ten years rather than nine months.
50.1% of the vote, a fraction of the economic stake
The Founder LLC’s 50.1% voting share is not proportional to what the founders actually own. Forbes estimates each of the seven holds roughly a 1.4% economic stake in Anthropic, worth $13.1 billion to $13.8 billion apiece — a figure anchored to the company’s last private valuation of $965 billion, set in May 2026, not to whatever price the IPO eventually sets. Seven stakes of 1.4% sum to about 9.8% of the company’s economic value, controlling 50.1% of its general vote.
The arrangement has a built-in expiry. A successor stops being a Continuing Founder on the tenth anniversary of the IPO’s completion. There’s also a failsafe in the other direction: if the LLC has fewer than three Continuing Founders for 90 straight days, a 450-day “Class F Transition Period” begins, at the end of which the Class F share, and the separate Class E share, are redeemed for nothing, ending the arrangement early unless a new successor has been seated in the meantime.
The succession plan surfaced the same week Anthropic put its first public numbers on the table: revenue of $16.3 billion for the first half of 2026, up roughly 1,300% year over year, against a net loss of $80.7 billion, most of it a non-cash accounting charge, and over $500 billion in long-term compute commitments, according to Fortune’s reading of the S-1. Three weeks earlier, Anthropic was reportedly seeking roughly $100 billion in a private round; the IPO is now said to target ten to twenty times that in valuation, a figure the S-1 itself leaves blank.
What the filing does not answer is what triggers disclosure of a list beyond “a court order or other legal requirement,” in Business Insider’s phrasing of the confidentiality carve-out, or what a judge would need to see before ordering one unsealed. That question has no case law yet, because no founder has died or been declared incapacitated. The agreement is public. The names on it are not.