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The documentS–1Anthropic, PBC26 OCT 2026 · 421 PP.
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Table of Contents

Reimbursement of Legal Fees

In connection with the structuring and negotiation of our governance structure prior to this offering, we have 
paid  or  reimbursed,  or  will  pay  or  reimburse,  legal  fees  incurred  by  the  Founder  LLC,  which  we  expect  to  be 
approximately $          .

Transactions with the LTBT

We provide funding to the LTBT, which holds all of our Class T common stock, to support its operations and the 
compensation of its Trustees. In the years ended December 31, 2023, 2024, and 2025, we paid $2,716,750, $0, 
and  $906,089  to  the  LTBT,  respectively.  During  the  nine  months  ended  September  30,  2026,  we  paid 
$8,425,213 to the LTBT. The LTBT is accounted for as a consolidated VIE on our balance sheet (see Note 1 to 
our consolidated financial statements included elsewhere in this prospectus).

Other Transactions 

We have granted stock options and RSUs to our executive officers and certain of our directors. See the section 
titled “Executive Compensation—Outstanding Equity Awards at 2025 Year-End” for a description of these stock 
options and RSUs.

Other  than  as  described  above  under  this  section  titled  “Certain  Relationships  and  Related  Person 
Transactions,”  since  January  1,  2023,  we  have  not  entered  into  any  transactions,  nor  are  there  any  currently 
proposed transactions, between us and a related person where the amount involved exceeds, or would exceed, 
$120,000, and in which any related person had or will have a direct or indirect material interest. We believe the 
terms  of  the  transactions  described  above  were  comparable  to  terms  we  could  have  obtained  in  arm’s-length 
dealings with unrelated third parties. 

Limitation of Liability and Indemnification of Officers and Directors 

We  expect  to  adopt  an  amended  and  restated  certificate  of  incorporation,  which  will  become  effective 
immediately prior to the completion of this offering, and which will contain provisions that limit the liability of 
our  directors  and  certain  officers  for  monetary  damages  to  the  fullest  extent  permitted  by  the  DGCL. 
Consequently,  our  directors  and  certain  officers  will  not  be  personally  liable  to  us  or  our  stockholders  for 
monetary damages for any breach of fiduciary duties as directors and officers, except liability for the following: 

•

•

•

•

•

any breach of the director’s or officer’s duty of loyalty to our company or our stockholders; 

any act or omission not in good faith or that involves intentional misconduct or a knowing violation of 
law; 

for  our  directors,  unlawful  payments  of  dividends  or  unlawful  stock  repurchases  or  redemptions  as 
provided in Section 174 of the DGCL;

any transaction from which they derived an improper personal benefit; or 

for our officers, any action by or in the right of the corporation. 

Any amendment to, or repeal of, these provisions will not eliminate or reduce the effect of these provisions in 
respect of any act, omission, or claim that occurred or arose prior to that amendment or repeal. If the DGCL is 
amended  to  provide  for  further  limitations  on  the  personal  liability  of  directors  and  officers  of  corporations, 
then the personal liability of our directors and officers will be further limited to the greatest extent permitted by 
the DGCL. 

In addition, we expect to adopt amended and restated bylaws, which will become effective immediately prior to 
the completion of this offering, and which will provide that we will indemnify, to the fullest extent permitted by 
law, any person who is or was a party or is threatened to be made a party to any action, suit, or proceeding by 
reason of the fact that they are or were one of our directors or officers or are or were serving at our request as a 
director or officer of another corporation, partnership, joint venture, trust, or other enterprise. Our amended 
and restated bylaws are expected to provide that we may indemnify to the fullest extent permitted by law any 

286

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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.