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Anthropic plans to publicly unveil IPO prospectus after Labor Day, the Information reports

By Thomson Reuters Aug 27, 2026 | 2:07 PM

Aug 27 (Reuters) – Anthropic is planning to unveil its IPO prospectus after Labor Day, with a potential listing in late September or early ​October, The Information reported on Thursday, citing ‌people familiar with the process.

The startup confidentially filed for a public listing earlier this year, as it races with rival OpenAI to their market debuts amid strong investor appetite for ‌AI ​firms.

• Anthropic is considering allowing ⁠existing shareholders to sell ⁠shares as part of its IPO and weighing lockup periods longer than the customary 180 days, according to the Information report.

• Allowing secondary stock sales ​in the IPO would distinguish Anthropic from this year’s other big tech listings, SpaceX and Cerebras, ⁠which didn’t have existing stockholders ⁠sell shares in the IPOs.

• SpaceX’s first ​lockup expiry earlier this month more than doubled its ​publicly traded shares, with another 12.9 billion shares ‌scheduled to be unlocked by mid-2027 under its staggered schedule.

• Anthropic, which has already raised at least $130 billion to support its intensive compute demands, is expected ⁠to surpass the $86 billion raised by SpaceX in its June IPO, the report said.

• It was not clear how ⁠much of Anthropic’s ‌offering would consist of newly issued ⁠shares versus sales by existing holders.

• ​The ‌company has separately considered requiring rank-and-file employees ​to sell ⁠shares through preset 10b5-1 trading plans rather than the typical post-earnings selling windows, according to the Information.

• Anthropic did not immediately respond to a Reuters request for comment.

(Reporting by Juby Babu in Mexico City; Editing ​by Joyjeet Das)