All seven Anthropic co-founders plan to sell exactly the same number of shares in the artificial intelligence company’s coming initial public offering, a split that would hand each of them roughly $250 million. The disclosure came in Anthropic’s updated S-1 filing, which TechCrunch reported on November 10, and it shows the Anthropic founders each selling 3,378,378 shares at an offering price the company has pegged in an unusually wide band of $70 to $78.
Identical Blocks of 3,378,378 Shares
At the $74 midpoint of that range, each founder’s block comes to just shy of $250 million, according to TechCrunch. At the bottom of the range, $70, each would pocket just over $236 million. At the top, $78, each would take in just under $264 million. TechCrunch noted that in an IPO as eagerly anticipated as this one, companies can often price shares above the initial range.
Multiplied across all seven sellers, the group is parting with 23,648,646 shares. Shattered.io, citing The Tech Buzz, reported that the updated prospectus shows the founders selling $1.75 billion of stock in total, a figure that lines up with the midpoint arithmetic. At $70 the group’s proceeds would fall to about $1.66 billion; at $78 they would rise to about $1.84 billion.
The seven sellers are Dario Amodei, the chief executive; Daniela Amodei, president and chair of the board; Tom Brown, chief compute officer; Jack Clark, head of public benefit; Jared Kaplan, chief science officer; Sam McCandlish, chief architect; and Christopher Olah, interpretability research lead.
What the Anthropic Founders Will Still Control
Selling does not loosen the group’s grip on the company. After the offering, each founder will own about 3.2% of the total outstanding Class A shares, the S-1 says, or roughly 22% collectively. TechCrunch cautioned that this is not their share of the company overall: Class A is only one of Anthropic’s share classes, and other holders, including Amazon and Google, hold nonvoting Class N shares, so the founders’ stake in total equity will be considerably smaller.
Each founder will also receive one share of Class F stock, which carries supervoting rights. Together, the Anthropic founders will control 51.1% of the votes, and no single founder will hold significantly more shares or votes than the others.
That evenness is the detail Shattered.io flagged as genuinely unusual. Founder stakes at technology companies usually differ widely, the outlet wrote, because people join at different times and negotiate different grants, so an identical sale across seven founders “is therefore a choice, not an accident.” Shattered.io said it would not guess at the motive behind the symmetry, which has not been explained publicly, while noting that an even split means the sale “cannot be read as one insider losing confidence while others hold.”
Board Members Signal Demand
The filing already hints at appetite for the stock. Board member Reed Hastings has indicated he wants to buy $300 million worth of shares through his donor-advised fund, TechCrunch reported, and board member Christopher Liddell wants to buy $3 million worth. TechCrunch reported the IPO could value Anthropic at $1.4 trillion.
According to Shattered.io, the offering reportedly combines 801 million shares sold on Nasdaq with 351 million shares in a private placement, for 1.152 billion shares across both channels. On that basis, the founders’ 23,648,646 shares equal about 3% of the Nasdaq tranche and about 2% of the combined total. Shattered.io stressed that the split of the founders’ shares between the two channels has not been disclosed, so those percentages are only a rough scale.
Pricing Expected November 18, Trading November 19
Shattered.io reported that pricing is set for November 18, with trading to begin November 19 under the ticker ANT. Each $1 move in the final price shifts every founder’s proceeds by $3,378,378 and the group’s by $23,648,646, the outlet calculated. Founders sell at the IPO price rather than the first-day close, it added, so a strong debut would lift the value of what they keep but would not increase the cash from shares already sold.
Why the $250 Million Number Is an Estimate
Shattered.io urged caution on the headline figure, calling the share count “the firm number here” and the dollar value “a derived estimate.” Multiplying 3,378,378 by $74 produces $249,999,972, which the outlet said “rounds neatly to $250 million but does not equal it.” It described the roughly $27 million spread per person between the low and high ends of the range as “the honest range behind the tidy headline.”
The outlet also noted that the figures are pre-tax, that the founders’ holding periods and residency are not disclosed, and that nothing has closed: “The sale is a plan inside a prospectus, and the prospectus numbers have shifted between filings.” It pointed to an earlier retracted IPO pricing filing as evidence that terms can still change, and said that because earlier filings carried different share counts and ranges, every figure in its article ties to the version of the prospectus cited on November 11, 2026. It added that descriptions of the sale as a record are unsupported, because no published comparison exists between this payout and earlier founder payouts at other companies. Those caveats are set out in Shattered.io’s analysis.
A Group That Left OpenAI in 2021
The seven left OpenAI to start Anthropic in 2021 after disagreements with OpenAI’s leadership over how AI should be built, TechCrunch reported. Siblings Dario and Daniela Amodei, who held senior research and policy roles at OpenAI, were joined by five fellow OpenAI colleagues in forming a company that has said, very publicly and from the start, that it is more focused on AI safety than its rivals, including the founders’ former employer.
The scale of the payout lands at a moment when the public conduct and politics of AI company founders are already drawing scrutiny, as seen in the debate sparked by remarks from the founders of Palantir and Anduril. For the Anthropic founders, the amount each actually banks will not be settled until underwriters fix the price.
