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The documentS–1Anthropic, PBC26 OCT 2026 · 421 PP.
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We take various steps to comply with applicable export controls and sanctions, including: maintaining a global 
trade policy and a supported regions policy, implementing IP-based geo-blocking controls that restrict access 
from  certain  jurisdictions  to  our  models,  platform,  and  applications,  conducting  restricted  party  screening  of 
certain  customers  and  vendors,  and  including  sanctions  and  export  compliance  provisions  in  our  customer 
terms of service and vendor agreements. However, we cannot guarantee the compliance measures and internal 
controls we have adopted will prevent violations of applicable export controls and sanctions. Our compliance 
measures and internal controls have not always been and may not always be fully effective, and we have in the 
past  voluntarily  disclosed,  and  may  in  the  future  voluntarily  disclose,  instances  of  noncompliance  to  the 
relevant  authorities.  We  cannot  guarantee  that  our  measures  will  prevent  future  violations  or  keep  pace  with 
the  changing  substance,  application,  and  interpretation  of  export  controls  and  sanctions.  In  addition,  third 
parties have in the past and may in the future take action to circumvent our compliance measures and controls 
in order to gain access to our products and services. 

If  we  misclassify  a  product  or  service,  export,  re-export,  transfer,  or  provide  access  to  a  product,  or  provide 
services  in  violation  of  applicable  export  controls  or  sanctions,  or  otherwise  fail  to  comply  with  applicable 
export controls or sanctions, we could be subject to criminal or civil sanctions, settlements, prosecution, loss of 
export  privileges,  suspension  or  debarment  from  U.S.  government  contracts,  other  enforcement  actions, 
disgorgement  of  profits,  significant  fines,  damages,  other  civil  and  criminal  penalties  or  injunctions, 
whistleblower  complaints,  adverse  media  coverage,  and  other  consequences.  Any  investigations,  actions,  or 
sanctions  could  adversely  affect  our  reputation,  business,  financial  condition,  and  results  of  operations. 
Responding to any investigation or action could result in a significant diversion of management’s attention and 
resources and significant defense costs and other professional fees.

Decreased use of our models, platform, and applications by customers outside the United States or a limitation 
on our ability to export, provide access to, or sell our models, platform, and applications to customers and other 
parties  outside  the  United  States  may  cause  our  revenue  from  such  unsupported  jurisdictions  to  decline  and 
otherwise adversely affect our business and financial condition. 

If  we  or  our  business  partners  or  counterparties,  including  licensors  and  licensees,  prime  contractors, 
subcontractors, sublicensors, vendors, customers, or contractors, violate export controls or sanctions, including 
by  failing  to  obtain  appropriate  import,  export,  or  re-export  licenses  or  permits,  or  if  we  fail  to  secure  such 
contractual commitments from such parties, we may also be adversely affected through reputational harm as 
well as other negative consequences, including government investigations or penalties. 

Negative  consequences  stemming  from  violations  or  apparent  violations  of  export  controls  or  sanctions  may 
include the loss of the right to sell our models, platform, and applications or services to the U.S. government, or 
to  other  U.S.  or  non-U.S.  public  bodies,  or  a  reduction  in  our  ability  to  compete  for  such  sales  opportunities 
involving government agencies or other public bodies. Further, ensuring that we are complying with applicable 
export controls and sanctions regulations may be time-consuming and could result in the delay or loss of sales 
opportunities in connection with particular transactions.

Also,  in  addition  to  the  United  States,  various  countries  regulate  the  import  and  export  of  certain  encryption 
and other technology and have enacted laws that could limit our ability to distribute our models, platform, and 
applications  or  could  limit  our  customers’  abilities  to  implement  our  models,  platform,  and  applications  in 
those  countries.  For  example,  following  Russia’s  invasion  of  Ukraine,  the  United  States  and  other  countries 
imposed  financial  and  trade  sanctions  and  export  controls  against  Russia,  Belarus,  and  certain  regions  of 
Ukraine, and the United States and other countries could impose wider sanctions and export restrictions and 
take other actions should the conflict further escalate. Any new export restrictions, new legislation, changes in 
sanctions,  or  shifting  approaches  in  the  enforcement  or  scope  of  existing  regulations,  or  in  the  individuals, 
entities,  governments,  territories,  countries,  or  technologies  targeted  by  or  subject  to  such  regulations  could 
result in decreased use of our models, platform, and applications by existing customers outside of the United 
States, reduced adoption of our models, platform, and applications by new customers with non-U.S. operations, 
limited expansion into new markets, and decreased revenue.

100

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  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.

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A closer look at the filing

Anthropic · Form S-1PDF 1

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