Amendment to Registration Rights Agreement and Waiver of Registration Rights and Notice by and among the Registrant and certain of its stockholders, dated December 3, 2020

This Amendment to Registration Rights Agreement and Waiver of Registration Rights and Notice (this “Amendment and Waiver”) is made as of December 3, 2020 (the “Amendment Date”), by and among C3.ai, Inc., a Delaware corporation (the “Company”), and the undersigned Investors (as defined below).

WHEREAS, the Company and certain of its stockholders (the “Investors”) have previously entered into that certain Registration Rights Agreement, dated August 15, 2019, as amended, by and among the Company and the parties named therein (as the same may be amended and/or restated from time to time, the “Rights Agreement”). Capitalized terms used but not defined herein shall have the respective meanings set forth in the Rights Agreement.

WHEREAS, pursuant to the terms of the Rights Agreement, the undersigned and each other Holder has under certain circumstances the right to be notified prior to filing any registration statement for the purposes of effecting a public offering of the Company’s common stock and to include in such registration statement certain Registrable Securities held by the undersigned and each such other Holder (the “Registration Rights”).

WHEREAS, the undersigned understands that the Company is considering the sale of its common stock to the public through a firm commitment underwritten initial public offering (the “Proposed IPO”), pursuant to a Registration Statement on Form S-1 under the Securities Act and any related registration statement filed pursuant to Rule 462(b) of the Securities Act (collectively, the “IPO Registration Statement”).

WHEREAS, in connection with the Proposed IPO and the preparation and filing of the IPO Registration Statement, the undersigned understands that the Company is requesting the waiver of (i) any and all Registration Rights in connection with the submission and filing of, and the Proposed IPO to be made pursuant to, the IPO Registration Statement, and (ii) any right to notice with respect to the foregoing under the Rights Agreement or otherwise, including without limitation any such notice rights granted under the Rights Agreement (the “Notice Rights”).

WHEREAS, Section 3.5 of the Agreement provides that the Rights Agreement may be amended or modified, and the obligations of the Company and the rights of the Holders under this Agreement may be waived, only upon the written consent of (i) the Company, (ii) the Investors holding at least a majority of the voting power of all then outstanding shares of capital stock held by such Investors, (iii) with respect to amendments or waivers that materially adversely affects the powers, rights, preferences or privileges of the holders of the Series D Preferred Stock, the holders of a majority of the outstanding Series D Preferred Stock, (iv) with respect to amendments or waivers that materially adversely affects the powers, rights, preferences or privileges of the holders of the Series F Preferred Stock, the holders of a majority of the outstanding Series F Preferred Stock, (v) with respect to amendments or waivers that materially adversely affects the powers, rights, preferences or privileges of the holders of the Series G Preferred Stock, the holders of at least sixty-eight percent (68%) of the outstanding Series G Preferred Stock and (iv) with respect to amendments or waivers that materially adversely affects the powers, rights, preferences or privileges of the holders of the Series H Preferred Stock, the holders of a majority of the outstanding Series H Preferred Stock (collectively, the “Requisite Parties”).

WHEREAS the Company has entered into that certain Common Stock Purchase Agreement, dated on or about the date hereof, with Microsoft Corporation, a Washington corporation (“Microsoft,” and such agreement, the “Microsoft Purchase Agreement”), pursuant to which Microsoft will purchase shares of the Company’s Class A Common Stock (the “Microsoft Shares”), immediately subsequent to the closing of the Proposed IPO.

WHEREAS, the Company has entered into that certain Common Stock Purchase Agreement, dated on or about the date hereof, with Spring Creek Capital, LLC, a Delaware limited liability company and an affiliate of Koch Industries, Inc., (“Koch,” and such agreement, the “Koch Purchase Agreement”), pursuant to which Koch will purchase shares of the Company’s Class A Common Stock (the “Koch Shares”), immediately subsequent to the closing of the Proposed IPO.

WHEREAS, in connection with the consummation of the Microsoft Purchase Agreement and the Koch Purchase Agreement, the undersigned understands that the Company is requesting the amendment of the Rights Agreement to provide Registration Rights and Notice Rights under the Rights Agreement to Microsoft and Koch with respect to the Microsoft Shares and the Koch Shares, respectively.

WHEREAS, the undersigned constitute the Requisite Parties and desire to waive the Registration Rights and the Notice Rights and amend the Rights Agreement to provide Registration Rights and Notice Rights to certain new investors.

NOW, THEREFORE, in exchange for good and valuable consideration, the receipt of which is hereby acknowledged, the Company and the undersigned Investors, on behalf of themselves and each of their affiliates, agree as follows:

"(i)“Registrable Securities” means (i) Common Stock of the Company issuable or issued upon conversion of the Shares, (ii) any Common Stock of the Company issued as (or issuable upon the conversion or exercise of any warrant, right or other security which is issued as) a dividend or other distribution with respect to, or in exchange for or in replacement of, such above-described securities, (iii) the shares of Common Stock issuable pursuant to that certain Common Stock Purchase Agreement, dated on or about November 25, 2020, with Microsoft Corporation, a Washington corporation (“Microsoft” and such shares of Common Stock, the “Microsoft Registrable Securities”) and (iv) the shares of Common Stock issuable pursuant to that certain Common Stock Purchase Agreement, dated on or about November 25, 2020, with Spring Creek Capital, LLC, a Delaware limited liability company and an affiliate of Koch Industries, Inc. (“Koch” and such shares of Common Stock, the “Koch Registrable Securities”); provided, however, that such Microsoft Registrable Securities and Koch Registrable Securities shall not be deemed Registrable Securities and Microsoft and Koch shall not be deemed to be a Holder with respect to such Microsoft Registrable Securities or Koch Registrable Securities, as applicable, for the purposes of Sections 2.2 (and any other applicable sections of this Agreement with respect to registrations under Section 2.2), 2.4 (and any other applicable sections of this Agreement with respect to registrations

under Section 2.4) and 2.6 of this Agreement. Notwithstanding the foregoing, Registrable Securities shall not include any securities (A) sold by a person to the public either pursuant to a registration statement or Rule 144 or (B) sold in a private transaction in which the transferor’s rights under Section 2 of this Agreement are not assigned.”

(b)The undersigned understands and acknowledges that, pursuant to the terms of the Rights Agreement, the rights of the Holders pursuant thereto, including the Registration Rights, and the related Notice Rights, may be waived with the written consent of the Requisite Parties. The undersigned further acknowledges that this waiver (the “Waiver”) shall apply only with respect to the submission and filing of, and the Proposed IPO to be made pursuant to, the IPO Registration Statement and will not affect the undersigned’s Registration Rights, Notice Rights or any other rights in connection with any registration statements other than the IPO Registration Statement. Except as expressly waived herein, all other terms and conditions of the Rights Agreement shall remain in full force and effect.

(c)This Waiver shall automatically terminate upon the earliest to occur, if any, of (i) the date that the Company advises the Representatives (as defined in the Underwriting Agreement), in writing, prior to the execution of the Underwriting Agreement related to the Proposed IPO (the “Underwriting Agreement”), that it has determined not to proceed with the Proposed IPO, (ii) the date of termination of the Underwriting Agreement if prior to the closing of the Proposed IPO, or (iii) June 30, 2021 if the Proposed IPO has not been completed by such date.

3.No Other Amendment or Waiver. Except as set forth in this Amendment, the Rights Agreement shall remain in full force and effect in all respects without any modification. This Amendment shall become effective when executed and delivered by the Requisite Parties.

4.Counterparts; Facsimile Signature. This Amendment may be executed in counterparts, each of which shall constitute an original and all of which, when taken together, shall constitute one agreement. A facsimile, telecopy or other reproduction of this Amendment may be executed by one or more parties hereto and delivered by such party (or parties) by facsimile or any similar electronic transmission device pursuant to which the signature of or on behalf of such party can be seen. Such execution and delivery shall be considered valid, binding and effective for all purposes. At the request of any party hereto, all parties hereto agree to execute and deliver an original of this Amendment as well as any facsimile, telecopy or other reproduction hereof.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.

IN WITNESS WHEREOF, the undersigned has executed this Amendment and Waiver effective as of December 3, 2020.