Anthropic, PBC files public S-1 for Nasdaq “ANT” IPO: H1’26 revenue $16.3B, PBC+LTBT controlled structure; share count and price TBD

Why it matters

【Key points】

Anthropic, PBC publicly filed a Form S-1 with the U.S. SEC on 2026-10-26 for a proposed IPO of Class A common stock. EDGAR acceptanceDateTime 2026-10-26T13:00:11.000Z (≈ 21:00:11 CST / 09:00:11 ET); file number 333-299633; accession 0001628280-26-067168; primary document anthropicpbc-sx1.htm. Same-day company note: intends to list on Nasdaq Global Select under “ANT”; share count and price range not yet set. Lead underwriters Goldman Sachs & Co. LLC and Morgan Stanley & Co. LLC (cover also lists J.P. Morgan, Citigroup, Barclays, and others). Preceded by confidential DRS/DRS/A filings since 2026-06-01.

Verifiable prospectus metrics ($ millions unless noted):

1) Revenue: 2023 $41 → 2024 $386 → 2025 $4,585; H1 2026 $16,286 (vs H1 2025 $1,163).

2) Operating loss H1 2026 only $(693); net loss dominated by fair-value changes on convertibles/SAFEs/derivatives ($(72,388) in H1 2026)—not by operating loss alone.

3) Capital/cash as of 2026-06-30: ~$141.1B raised aggregate; cash & equivalents $112.4B; short-term investments $19.3B.

4) Customers as of 2026-09-30 (TTM): >11,900 ≥$100k; >1,900 ≥$1M; ~250 ≥$10M. NRR ~900%.

5) Headcount ~5,300 (2026-09-30); TTM revenue per employee >$6.6M (vs ~$1.4M a year earlier).

6) Governance: Delaware public benefit corporation; LTBT holds Class T and elects a majority of the board; Founder LLC (Dario/Daniela Amodei + five other co-founders) holds Class F with ~50.1% voting power on general matters; Nasdaq “controlled company.” Also Class N (strategic, largely non-voting) and proposed Class E (employees, limited votes).

7) Other: 2025 Bartz settlement charge $1,500; compute & infrastructure H1 2026 $8,945.

Company news page https://www.anthropic.com/news/s1-sec is a short statutory notice without tables—use the EDGAR S-1 for numbers. Price range, size, and effectiveness TBD; registration not yet effective; not an offer to sell.

【Verifiable】

S-1: https://www.sec.gov/Archives/edgar/data/2130357/000162828026067168/anthropicpbc-sx1.htm

CIK 0002130357 submissions: acceptance 2026-10-26T13:00:11.000Z / S-1 / 333-299633

Company: https://www.anthropic.com/news/s1-sec (Oct 26, 2026)

Techmeme river same-day secondary coverage (Axios/NYT/Bloomberg Law, etc.)—media valuation rumors are not verification items here

Site search s1-sec / 333-299633 / Anthropic S-1: no prior event; do not confuse with ETF 485 filings that merely name Anthropic in holdings

Prior patrols: EDGAR efts q="Anthropic" forms=S-1 since 2026-10-20 were 0; first Anthropic, PBC issuer S-1 this round

【Our read】

1. Background: Frontier-lab IPO moves from rumor to a downloadable prospectus. Prior rounds saw only ETF holdings text and media heat; EDGAR S-1 for Anthropic PBC was 0 until today’s 13:00Z acceptance, which lands inside this window (CST 20:32–22:30) and matches the ~9am ET rumor. The Jun–Oct confidential DRS chain means financials, governance, and risk factors are now registrant statements, not journalist paraphrase.

2. Peer compare: Versus still-private OpenAI and listed but non-pure-frontier paths (cloud AI units, semis, apps), Anthropic is going public as a PBC with LTBT board majority plus founder Class F super-vote—a controlled-company bet that safety governance can survive a public float. Financially, revenue jumps from FY2025 $4.6B to H1 2026 $16.3B while operating loss shrinks below $0.7B, yet net loss is bloated by fair-value accounting: readers must separate “does the model business earn” from “how private marks hit the P&L.” Customer mix (~250 ≥$10M accounts; NRR~900%) shows steep enterprise expansion and concentrates renewal/pricing risk.

3. Impact: First public frontier-lab books will reprice revenue/compute/headcount ratios for cloud and chip contracts, talent, and enterprise diligence. Whether Class T/F/N/E survives public shareholders and proxy advisers tests if “safety-first” capital structure can live on an exchange. Share count and price are blank—media trillion-dollar marks are not prospectus statements. Watch S-1/A price/size, roadshow, effectiveness, and any peer filings.

4. Limits: EDGAR + company note only; no media valuation, “missing Q3,” or second-hand “operating profit” reads (filing covers through 2026-06-30; some KPIs through 2026-09-30). Not effective; not an offer. Prefer-empty still GO: density supports a full judgment section; site has no duplicate. Same-round Google Beam / Amazon earnings preview / Fanatics customer story → SKIP.