The paper trail

Small print.
Wide open.

A clear path from a claim to the page it came from. Here’s the filing, the research, and how we read it.

The documentS–1Anthropic, PBC26 OCT 2026 · 421 PP.
01The original SEC filingThe authoritative source, in your browser.SEC · HTML 02Download the saved filingThe complete 421-page document, optimized for downloading.PDF · 46 MB 03Download the full researchFindings, customer examples, calculations, and source references.Markdown

Page by page

Go straight to the source.

Page references count physical pages in the saved PDF, starting at 1. The printed filing number is shown separately when available.

Enter a page from 1 to 421. No PDF download needed.

From the filing

PDF page 28

Printed filing page 17 · Extracted page text

View on the SEC
Read the page text
Table of Contents

•

•

•

Our capital stock structure features certain provisions that are novel or otherwise not common among 
other corporations with multiple-class structures, and may effectively eliminate the ability of holders of 
our Class A common stock to influence important decisions, including a change in control.

Our  capital  structure  will  concentrate  voting  power  with  the  LTBT  and  the  Founder  LLC  for  the 
foreseeable  future  and  will  result  in  the  LTBT  and  the  Founder  LLC  having  voting  power  that  is  not 
derived from or proportionate to economic interests in our company.

Our  focus  on  the  long-term  best  interests  of  our  company  as  a  PBC,  and  the  duty  of  our  directors  to 
balance the pecuniary interests of our stockholders, the best interests of those stakeholders materially 
affected by our conduct, and our Company Purpose, may conflict with short-, medium-, or long-term 
financial  interests  and  business  performance,  which  may  negatively  impact  the  value  of  our  Class  A 
common stock.

Channels for Disclosure of Information 

Investors,  the  media,  and  others  should  note  that,  following  the  completion  of  this  offering,  we  intend  to 
announce  material  information  to  the  public  through  filings  with  the  Securities  and  Exchange  Commission 
(“SEC”),  the  investor  relations  page  on  our  website  (www.anthropic.com),  blog  posts  on  our  website,  press 
releases,  public  conference  calls,  public  webcasts,  our  X  accounts  (@AnthropicAI  and  @ClaudeAI),  our 
Instagram  page  (@claudeai),  our  Threads  account  (@claudeai),  and  our  LinkedIn  page  (https://
www.linkedin.com/company/anthropicresearch/).

The  information  disclosed  by  the  foregoing  channels  could  be  deemed  to  be  material  information.  As  such, 
following the completion of this offering, we encourage investors, the media, and others to follow the channels 
listed above and to review the information disclosed through such channels. We are not incorporating any of 
the information in such channels into this prospectus.

Any updates to the list of disclosure channels through which we will announce information will be posted on the 
investor relations page on our website. 

Corporate Information 

We were incorporated as a Delaware PBC in January 2021. Our principal executive offices are located at 548 
Market Street, PMB 90375, San Francisco, California 94104, and our telephone number is (415) 326-6303. Our 
website address is www.anthropic.com. Information contained on, or that can be accessed through, our website 
does not constitute part of this prospectus and references to our website address in this prospectus are inactive 
textual  references  only.  You  should  not  consider  information  contained  on  our  website  to  be  part  of  this 
prospectus or in deciding whether to purchase shares of our Class A common stock. 

“Anthropic,”  our  logo,  and  our  other  registered  or  common  law  trademarks,  service  marks,  or  trade  names 
appearing in this prospectus are the property of Anthropic, PBC. Other trademarks and trade names referred to 
in  this  prospectus  are  the  property  of  their  respective  owners.  Solely  for  convenience,  trademarks  and  trade 
names  referred  to  in  this  prospectus  may  appear  without  the  ®  or  ™  symbols,  but  such  references  are  not 
intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights, or 
the rights of any applicable licensor, to these trademarks and trade names. 

17

Text is provided for reference. Check the original for tables, images, and exact formatting.

Find a section 16 starting points

Section links may begin before the exact paragraph cited in a finding. PDF numbers below use physical pages.

  1. Founders’ letterp. 3SEC
  2. Defined termsp. 12SEC
  3. Prospectus summaryp. 16SEC
  4. Risk factorsp. 38SEC
  5. Management’s discussion & analysisp. 144SEC
  6. Businessp. 190SEC
  7. Governancep. 254SEC
  8. Executive compensationp. 275SEC
  9. Related-person transactionsp. 293SEC
  10. Principal & selling stockholdersp. 299SEC
  11. Capital-stock rightsp. 303SEC
  12. Shares eligible for future salep. 318SEC
  13. Underwritingp. 327SEC
  14. Auditor change & expertsp. 345SEC
  15. Financial statements & notesp. 347SEC
  16. Part II & exhibit indexp. 413SEC

How this was made

Read in full.
Kept in context.

A snapshot of the filing dated , rather than a live record of later events.

3primary reviewers
421pages reviewed
43image instances checked

The review

Three primary reviewers read non-overlapping ranges of the complete main filing. All 43 embedded image instances were transcribed and visually reviewed, including the founders’ letter, charts, and customer case studies. Financial tables were also checked visually for dates, units, and column alignment.

A separate reviewer checked the draft’s calculations, accounting interpretations, and customer qualifications. An additional check covered the later merged findings. The result is 62 findings and 21 customer examples.

The boundary

Companion contracts and other exhibits named in the filing’s index are separate documents and were not independently reviewed. Customer outcomes, technical benchmarks, forecasts, and scientific priority claims remain attributed company or customer disclosures.

The numbers

Dollar figures are U.S. dollars. H1 means the six months ended June 30; Q2 means the three months ended June 30. The 2026 interim financial statements are unaudited. Our calculations show their inputs and are labeled separately from reported values.

Blank fields stay undisclosed. Figures with different periods, conditions, or potentially overlapping scopes are kept separate. An earlier tender price is not an IPO price.

What the evidence labels mean
Reported in filing
A company disclosure, with the period and accounting basis retained.
Company estimate / company claim
An estimate or assertion attributed to the company, with its uncertainty preserved.
Our calculation
A derived figure using cited inputs. It is not a separately reported company metric.
Customer example
A selected case study, with its measurement limits. It is not representative ROI.
Proposed / conditional
A status qualifier for an arrangement that is not yet effective or depends on stated conditions.

About updates. This edition is tied to the October 26, 2026 filing. Any later revision should identify its new source date and preserve the basis of earlier claims.

The footnotes are only the beginning.Explore the findings Read the story
The original, in context

Open the footnote.

A closer look at the filing

Anthropic · Form S-1PDF 1

Opening page 1…

Filed October 26, 2026. PDF is approximately 46 MB and opens only when requested. Section links may precede the exact cited paragraph.