Anthropic filed an S-1 for Class A stock on Nasdaq under ticker ANT, confirmed by Anthropic today Anthropic announcement and the filing at SEC EDGAR.

Leads named are Goldman Sachs and Morgan Stanley (prospectus contacts), with J.P. Morgan also cited in the detailed breakdown. Share count and price range are not disclosed yet.

H1 2026 revenue was $16.3B vs $1.16B a year earlier, and 2025 revenue $4.59B vs $386M in 2024, with 11,900+ $100K+ customers, 1,900+ $1M+, about 250 $10M+, 80% consumption ($13.1B) and 20% subscriptions ($3.2B), per the same breakdown.

H1 operating loss narrowed to $693M vs $2.14B, while net loss was $80.7B driven by a $72.4B fair value charge on convertible notes that rises with valuation, plus a $1.5B Bartz copyright settlement in 2025, as readers explain.

Compute and infrastructure was $8.9B in H1, with minimums of at least $114.5B to Google through July 2033, $110.0B to Amazon through April 2036, $44.9B to Microsoft through May 2033, about $265.6B total owed regardless of usage, plus $131.7B cash and short-term investments and up to $77B in note facilities (Google $20B, Amazon $15B, Broadcom $42B).

It is a public benefit corporation, Class F founder LLC holds 50.1% of vote, Long-Term Benefit Trust picks board majority, Class A 1 vote, Class N non-voting, Amazon capped at 12%, Google at 14.99%, 5% to Public Benefit Fund. It warns advanced AI could pose catastrophic or existential risks and flags copyright suits. About 5,300 employees as of Sept 30. Use of proceeds is compute, hiring and general purposes.

Talk of a $2T valuation, Nov 19-20 listing and customer concentration is market chatter in commentary, not in Anthropic's announcement.