Anthropic files to sell up to $3.5 billion of its IPO shares to investors in Japan
The San Francisco maker of the Claude AI models filed a Japanese registration statement Nov. 2. The shares would trade only on Nasdaq, and the price and timing are not set.
Anthropic, the San Francisco company behind the Claude AI models, has filed paperwork in Japan to sell up to $3.5 billion of stock to Japanese investors as part of its planned initial public offering, according to a securities registration statement filed Nov. 2 with Japan's Kanto Local Finance Bureau.
An initial public offering, or IPO, is when a private company first sells shares to the public. Big IPOs often sell part of the offering abroad to reach more buyers. The filing says the Japanese portion is part of a global offering and that the amount, about ¥552.9 billion, is an upper estimate.
The shares would trade only on the Nasdaq stock market in the U.S. Anthropic applied to list there on Oct. 26, and that approval was still pending when it filed, the document says. There is no plan to list in Tokyo.
The filing says the price will be set sometime between November 2026 and April 2027. The number of shares has not been decided. Six Japanese brokerages would take orders, led by Mizuho Securities, and including online brokers Rakuten Securities and SBI Securities, which serve many individual investors. Anthropic agreed not to sell more shares for 180 days after pricing without its underwriters' consent, with some exceptions, the filing says.
Source: Anthropic, PBC, securities registration statement (有価証券届出書) filed with the Kanto Local Finance Bureau, Nov. 2, 2026, copy of the EDINET filing; first reported by Tokyo Brief