Primary sources
SEC filings and where the S-1 will appear
Rather than republishing second-hand claims, this page points straight at the official registers. If a registration statement exists, it will show up at these addresses before it shows up in any headline.
Current status
No public registration statement for Anthropic PBC on SEC EDGAR.
A confidential draft submission would not be visible here, so absence of a filing does not prove absence of preparation.
SEC EDGAR full-text search - 'Anthropic'
The authoritative place any S-1, S-1/A, 424B4 prospectus or Form 8-A would appear.
efts.sec.gov
SEC EDGAR company search
Check whether a CIK number has been assigned to Anthropic PBC.
sec.gov
Amazon SEC filings (10-K / 10-Q)
Amazon discloses the carrying value and fair-value remeasurement of its Anthropic stake - the best public proxy for the holding's size.
ir.aboutamazon.com
Alphabet SEC filings
Alphabet's non-marketable equity securities disclosures include its Anthropic position.
abc.xyz
Anthropic newsroom
Primary source for confirmed funding rounds and corporate announcements.
anthropic.com
SEC Investor.gov - IPO basics
Regulator guidance on how IPO allocations, prospectuses and risks actually work.
investor.gov
What to read first in an S-1
- 1. Risk factors — customer and compute-supplier concentration in particular.
- 2. Revenue, gross margin and the cost of inference disclosed in the MD&A.
- 3. Share class structure and who controls the vote after listing.
- 4. Principal stockholders table — the first authoritative cap table.
- 5. Use of proceeds and any related-party compute agreements.