Anthropic filed a public Form S-1 on October 26, 2026, proposing an IPO of Class A common stock on the Nasdaq Global Select Market under the symbol ANT. In its announcement that day, the company said the registration statement had not yet become effective and that the share count and price range were undetermined. The filing says the proposed sale would begin as soon as practicable after the registration statement becomes effective. Anthropic’s announcement and the S-1 filing with the SEC set out those terms.
What Anthropic’s S-1 proposes
The proposed listing is for Class A common stock on Nasdaq, with ANT as its intended ticker. The filing’s conditional language describes when a sale could begin, not a calendar date for the IPO. The October 26 announcement also left the offering’s price range and number of shares undetermined.
For context, NeoTeo previously examined the reported $2 trillion valuation estimate in its earlier coverage of Anthropic’s IPO. The public S-1 sets out proposed share and governance terms as well as the listing plan.
Investor exposure and compute contracts are different
Anthropic’s filing describes financial ties with companies that can have different roles. As of June 30, 2026, Amazon had $6.203 billion in principal outstanding on convertible notes. The notes can convert into Class N shares, subject to a 12% ownership cap that Amazon may waive. Google had a financing facility of up to $20 billion, undrawn as of June 30, and an option to buy up to $10 billion in Class N shares in a private placement concurrent with the offering. If exercised, the share option would reduce the facility’s capacity by the same amount.
The filing also describes compute and infrastructure agreements. Microsoft has a minimum $44.9 billion commitment covering November 2026 through May 2033. SpaceXAI’s GPU-compute arrangements are for up to $120.5 billion through 2029, with termination rights after initial non-cancelable periods. Broadcom’s equipment leases carry approximately $161.2 billion in rent over five years, excluding interest. A minimum commitment, a spending ceiling and equipment-lease rent are different kinds of obligations; they are not equity stakes or a single investment total.
That distinction matters for companies connected to Anthropic: potential returns tied to share ownership are separate from revenue earned by supplying cloud or infrastructure services. The S-1 also identifies dependence on cloud providers and potential conflicts because providers may act as investors, suppliers, customers, distributors or competitors.
Bloomberg Intelligence analyst Mandeep Singh said in a November 2 interview that companies reserve compute capacity to avoid having to turn customers away. His explanation offers context for the scale of these arrangements, while the specific figures and terms remain attached to their individual contracts.
Who would hold voting and board power
Under the proposed structure, Founder LLC would hold one Class F share carrying 50.1% of general shareholder voting power, without economic rights. The Long-Term Benefit Trust would generally elect and remove the Class T directors, who would make up a majority of the board. The proposed arrangement separates economic ownership from significant voting and board powers.
