Anthropic will list with a board of “seven authorized directors, with one seat vacant”, according to its S-1/A of 10 November. The six seated directors split evenly between the two classes that elect them: three Class T directors chosen by the Long-Term Benefit Trust and three elected by Class A and Class F holders, by our count.
The same filing adds a rule the 2 November version did not have: “If the directors present at a meeting are evenly divided on a matter, the matter will not receive the affirmative vote of a majority of the directors present and will not be approved”.
Business Pill · IPO Float
A short explainer on IPO float, the share of a company sold in its listing. It teaches the general idea and does not discuss Anthropic’s board.
The key insight: Anthropic’s 10 November S-1/A says its board will have seven authorized seats with one vacant at listing: three Class T directors elected by the Long-Term Benefit Trust and three elected by Class A and Class F holders, by our count. A new paragraph says an evenly divided vote means a matter is not approved.
The board “currently consists of six directors”. After the offering, the filing says the LTBT “will generally have the authority to elect and remove the four Class T directors”, and “The initial Class T directors will be Mr. Hastings, Dr. Narasimhan, Mr. Liddell, and one vacancy”. “Mr. Liddell will serve as the Specified Class T Director”.
Class A and Class F holders, “voting together as a single class”, elect “the remaining three directors, who will initially be Dr. Amodei, Ms. Amodei, and Ms. Razavi”.
On tie votes, the filing says that “in general the affirmative vote of a majority of the directors present at a meeting (at which a quorum is present) is required for an act of our board of directors”. An evenly divided vote means the matter “will not be approved”.
Some decisions need more than a majority. “any change in the number of authorized directors (prior to the Class T Sunset Time), and the designation or issuance of any series of preferred stock, will require, among other approvals, the approval of 80% of the authorized members of the board of directors”. Elsewhere the filing says that 80% is “rounded up or down to the nearest whole number (any exact 0.5 rounding up)”.
Anthropic’s board after the offering by who elects the seats, our count from its S-1/A of 10 November 2026: three Class T directors elected by the Long-Term Benefit Trust, one vacant Class T seat, and three directors elected by Class A and Class F holders.
Our Numbers
Seated directors by electing class: 3 Class T and 3 Class A/F, with the fourth Class T seat vacant, by our count from the filing. That is 6 of 7 authorized seats filled.
80% of seven authorized directors is 5.6, which the filing’s rounding rule takes to 6, by our arithmetic. While the seat is vacant, a change to the board’s size or a new series of preferred stock would therefore need the votes of all six seated directors, by our arithmetic.
The vacancy is not new: the 2 November filing already listed “one vacancy” among the initial Class T directors, and the audit committee is still “Mr. Liddell, Mr. Hastings, and one vacancy”. What is new on 10 November is the tie-vote paragraph and the phrase “with one seat vacant” in the board description, by our comparison of the two filings.
The Structural Read
As we read the filing, the vacancy is not the change; it was already listed on 2 November. The change is that the board now spells out what happens when the directors present split evenly.
As we read the numbers, the 80% rule is 5.6 of seven seats, which rounds to six, by our arithmetic; while one seat is empty that means every seated director for a change to board size or a new series of preferred stock.
Anthropic, PBC, Form S-1/A, 10 November 2026
“If the directors present at a meeting are evenly divided on a matter, the matter will not receive the affirmative vote of a majority of the directors present and will not be approved”
Three Implications
FOR BOARD VOTES The filing says a majority of the directors present at a meeting with a quorum is required in general, and an even split fails.
FOR BOARD SIZE AND PREFERRED STOCK The filing says a change in the number of authorized directors before the Class T Sunset Time, and any new series of preferred stock, needs 80% of authorized directors, among other approvals.
FOR THE VACANT SEAT The filing names three initial Class T directors and one vacancy, and does not say who will fill it or when.
The framework says Anthropic “is becoming the first major AI lab actively attempting to define the governance layer of the AI stack.”
As we read it, the board rules in the filing are the corporate side of that layer: who sits on the board, who elects them and what an even split does. The framework does not discuss the S-1/A or the board.
What Is Not Established
The filing does not say who will fill the vacant Class T seat or when, and it does not say why the tie-vote paragraph was added. The 3-3 figure is our count of how the seated directors are elected; the filing does not say the two groups vote as blocs, and directors can vote either way on any matter. How the trust’s powers can change over time is covered in our earlier piece on the trust and our explainer on the Long-Term Benefit Trust.
The Great Convergence of Capital, Power, and Geopolitics
This week’s issue: for two years the AI build-out was priced as a supply story, and last week as a credit story. This week it was priced as a permission story, and the answer arrived as a cost, not a ban.
Anthropic’s 10 November S-1/A shows a seven-seat board with one Class T seat empty, leaving three trust-elected and three shareholder-elected directors seated, by our count. A new paragraph says an evenly divided vote fails, and changes to board size or preferred stock need 80% of authorized seats, which is six of seven, by our arithmetic.
A note on sourcing. Quotations are from Anthropic’s S-1/A filed with the SEC on 10 November 2026, compared with its S-1/A of 2 November 2026. Seat counts and the 80% calculation are our count and arithmetic. Anthropic was not contacted for this piece.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
