Anthropic IPO date: not set, and the S-1 has no price yet

There is no Anthropic IPO date yet. Anthropic filed its S-1 registration statement with the SEC on October 26, 2026, and the filing says it has not yet become effective, so no shares can be sold or offered for sale until it does. The company says it intends to list on Nasdaq under the symbol ANT, but the price range and the number of shares are still blank.

This page covers the Anthropic IPO date, the price, and how and when an investor could buy, using only what the company and the filing say. It is not investment advice. For the numbers in the filing, see our report on the S-1.

What the filing says about the date

Nothing, so far. The cover page of the S-1 is marked "Subject to completion", and the prospectus date is blank. The announcement says the registration statement "has not yet become effective." Anthropic has not published a pricing date or a first trading day.

Dates that depend on the listing are written as a count of days after the prospectus date, which is also blank. So the calendar for lock-ups and for dealers' prospectus delivery cannot be set until the offering is priced.

What is known: ticker, exchange and banks

• Class A common stock, the class being sold to the public.
• Nasdaq Global Select Market, under the symbol ANT. The filing says Anthropic has applied for the listing.
• Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC are named in the announcement as the places to get the preliminary prospectus, and in the filing as the underwriters' representatives.
• Both Anthropic and selling stockholders are offering shares. Anthropic does not receive proceeds from the selling stockholders' shares. How many of each is blank.

Anthropic IPO price: not set

The cover page says the price per share "will be between $ and $", with both numbers empty. The tables for proceeds, underwriting discounts and the underwriters' option to buy extra shares are empty too. A price range normally appears in a later amendment to the S-1, and the final price is set when the offering is priced. Neither has happened.

How to buy Anthropic stock

Neither the announcement nor the S-1 text we searched describes a directed share program, a reserved allocation for customers, users or the public, or any retail allocation. We searched the filing for those terms and found none. That is not a statement that none will exist, because the document is still a draft with blanks. The underwriters decide the allocation, and the filing does not say how shares will be distributed among investors.

Once the shares trade on Nasdaq, they would be available the way any listed stock is: through a brokerage account that offers it. The filing does not name any brokerage. Anthropic has said the offer cannot be accepted before the registration statement is effective, so anyone offering to sell you Anthropic shares today is not selling the IPO.

Employees are a separate case. The S-1 describes a 2026 Employee Stock Purchase Plan, adopted on September 1, 2026 and approved by stockholders on October 22, 2026, that becomes effective the day before the registration statement does. It is for staff, not the public.

Lock-ups: who can sell, and when

The filing says directors, officers and holders of substantially all of the company's stock have agreed, with exceptions, not to sell for 180 days after the prospectus date. Anthropic itself is under a company lock-up that ends at the earlier of two events: the second full trading day after it reports results for the quarter ending March 31, 2027, or the close of the 180th day after the prospectus date.

Some holders face an extended 365-day lock-up. The filing sets staged releases, counted in days after the prospectus date and after earnings releases, but the share amounts and percentages in those tables are blank. Goldman Sachs and Morgan Stanley can release holders early.

Anthropic is also a public benefit corporation with a Long-Term Benefit Trust that elects a majority of the board. Class A shares carry one vote each.

What is not set yet

• The IPO date, pricing date and first trading day.
• The price range and final price per share.
• The number of shares offered, and the split between Anthropic and selling stockholders.
• Any allocation to individual investors or a directed share program.
• The size of each lock-up release.

The thing to watch is an amended S-1 with the price range filled in. The company's filings are on the SEC's EDGAR system.