Small print.
Wide open.

Exhibit Index

Exhibit
Number
1.1*

Form of Underwriting Agreement.

Description

3.1

3.2

3.3

3.4

3.5

4.1

4.2#^

4.3#^

4.4#^

4.5#^

4.6#

4.7#

5.1*

10.1+

10.2+

10.3+

10.4+

10.5+

10.6+

10.7+

10.8#^

10.9#^

10.10^

Amended and Restated Certificate of Incorporation of the registrant, as amended and as currently in effect.

Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the registrant, as 
currently in effect.

Form of Amended and Restated Certificate of Incorporation of the registrant, to be in effect upon completion of 
this offering.

Amended and Restated Bylaws of the registrant, as amended, as currently in effect.

Form of Amended and Restated Bylaws of the registrant, to be in effect upon completion of this offering.

Form of common stock certificate of the registrant.

Amended and Restated Investors’ Rights Agreement among the registrant and certain holders of its capital 
stock, dated as of May 28, 2026.

2026 Stock Purchase and Convertible Note Facility Agreement between the registrant and Amazon Web 
Services, Inc., dated as of April 20, 2026.

Note Purchase Agreement between the registrant and Broadcom Inc., dated as of March 31, 2026.

Note Purchase Agreement between the registrant and Google LLC, dated as of March 31, 2026.

Registration Rights Agreement between the registrant and Broadcom Inc., dated as of June 8, 2026.

Registration Rights Agreement between the registrant and Google LLC, dated as of May 4, 2026.

Opinion of Wilson Sonsini Goodrich & Rosati, P.C.

Form of Indemnification Agreement between the registrant and each of its directors and executive officers.

Anthropic, PBC 2026 Equity Incentive Plan.

Anthropic, PBC 2026 Employee Stock Purchase Plan.

Anthropic, PBC 2021 Amended and Restated Stock Plan and related form agreements. 

Form of Executive Severance Agreement.

Outside Director Compensation Policy.

Donation Matching Plan. 

Sublease Agreement between the registrant and Salesforce, Inc., dated as of September 22, 2023.

Office Lease between the registrant and 300 Howard Owner, LLC, dated as of January 29, 2026.

Amended and Restated Credit Agreement between the registrant, the several lenders from time to time party 
thereto, and Morgan Stanley Senior Funding, Inc., dated as of September 4, 2026.

10.11#^ Master Equipment Lease Agreement between AI Infrastructure OpCo II, LLC, a wholly owned subsidiary of the 

registrant, and Broadcom Inc., dated as of March 31, 2026.

10.12

10.13

Irrevocable Proxy Agreement between the registrant, Daffy Charitable Fund, and the registrant’s Chief Executive 
Officer, dated as of October 6, 2025.

Irrevocable Proxy Agreement between the registrant, Dechomai Asset Trust, and the registrant’s Chief Executive 
Officer, dated as of December 20, 2024.

10.14

Form of Stockholders’ Agreement of Anthropic, PBC.

16.1

21.1

23.1

23.2

Letter Regarding Change in Accountants.

List of subsidiaries of the registrant.

Consent of Grant Thornton LLP, Independent Registered Public Accounting Firm.

Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm.

23.3*

Consent of Wilson Sonsini Goodrich & Rosati, P.C. (included in Exhibit 5.1).

II-6