Third Amendment to Second Amended and Restated Credit Agreement, dated as of August 26, 2022, between Jacobs Engineering Group Inc. and Bank of America, N.A., as administrative agent, to the Second Amended and Restated Credit Agreement dated as of March 27, 2019, by and among Jacobs Engineering, Inc., the designated borrowers party thereto, the lenders party thereto, and Bank of America, N.A., as administrative agent

THIS THIRD AMENDMENT TO SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of August 26, 2022 (the “Amendment”) is entered into among Jacobs Engineering Group Inc., a Delaware corporation (the “Company”), the Designated Borrowers, the Lenders, the L/C Issuers and Bank of America, N.A., as Administrative Agent and Swing Line Lender. All capitalized terms used herein and not otherwise defined herein shall have the meanings given to such terms in the Credit Agreement (as defined below).

WHEREAS, the Company, the Designated Borrowers, the Lenders, the L/C Issuers and the Administrative Agent entered into that certain Second Amended and Restated Credit Agreement dated as of March 27, 2019 (as amended by that certain First Amendment to Second Amended and Restated Credit Agreement dated December 16, 2020, that certain Second Amendment to Second Amended and Restated Credit Agreement (LIBOR Transition) dated December 6, 2021, and as further amended, restated, amended and restated, supplemented or otherwise modified prior to the date hereof, the “Credit Agreement”); and

WHEREAS, the Company has requested that the Lenders amend the Credit Agreement as set forth below;

NOW, THEREFORE, in consideration of the premises and the mutual covenants contained herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

1.Amendment. Each of the parties hereto agrees that, effective on the Amendment Effective Date (as defined below), the Credit Agreement (excluding the Schedules and Exhibits thereto (other than as set forth below)) is hereby amended such that, after giving effect to all such amendments, it shall read in its entirety as set forth on Annex A attached hereto.

2.Conditions Precedent. This Amendment shall be effective upon satisfaction of the following conditions precedent (the date such conditions precedent are satisfied, the “Amendment Effective Date”):

(a)The Administrative Agent’s receipt of the following, each of which shall be originals or electronic scans (followed promptly by originals) unless otherwise specified, each properly executed by a Responsible Officer of the signing Loan Party, each dated on the Amendment Effective Date and each in form and substance satisfactory to the Administrative Agent:

i.Executed counterparts of this Amendment duly executed by the Company, the Designated Borrowers, the Required Lenders and Bank of America, N.A., as Administrative Agent and Swing Line Lender;

ii.A certificate signed by a Responsible Officer of the Company including the Certificate of Merger of the Company and any other material documents related to the Permitted Restructure (as defined in the Credit Agreement as amended by this Amendment) as reasonably requested by the Administrative Agent; and

iii.A certificate signed by a Responsible Officer of the Company certifying that (i) the representations and warranties made by the Loan Parties in Section 3 of this Amendment are true and correct in all material respects on the Amendment Effective Date after giving effect to the Permitted Restructure (as defined in the Credit Agreement as amended by this Amendment), and (ii) that there has been no event or

circumstance since October 1, 2021 that has had or could be reasonably expected to have, either individually or in the aggregate, a Material Adverse Effect (as defined in the Credit Agreement, as amended by this Amendment).

(b)Unless waived by the Administrative Agent, the Company shall have paid all fees, charges and disbursements of counsel to the Administrative Agent (directly to such counsel if requested by the Administrative Agent) to the extent invoiced prior to or on the Amendment Effective Date, plus such additional amounts of fees, charges and disbursements incurred or to be incurred by it through the Amendment Effective Date (provided that such estimate shall not thereafter preclude a final settling of accounts between the Company and the Administrative Agent).

Without limiting the generality of the provisions of Section 10.01 of the Credit Agreement, for purposes of determining compliance with the conditions specified in this Section 2, each Lender that has signed or otherwise become a Lender under this Amendment shall be deemed to have consented to, approved or accepted or to be satisfied with, each document or other matter required thereunder to be consented to or approved by or acceptable or satisfactory to a Lender unless the Administrative Agent shall have received notice from such Lender prior to the proposed Amendment Effective Date specifying its objection thereto. Notwithstanding anything to the contrary in this Amendment, this Section 2 and the conditions set out in this Section 2 shall cease to apply and be of no further effect on and from the Amendment Effective Date.

(c)The representations and warranties of (i) the Loan Parties contained in Article V of the Credit Agreement (as amended by this Amendment) and (ii) each Loan Party contained in each other Loan Document, or which are contained in any document furnished at any time under or in connection herewith or therewith, shall be true and correct in all material respects on and as of the Amendment Effective Date, except (i) to the extent that such representations and warranties are qualified by materiality, they shall be true and correct on and as of the Amendment Effective Date, and (ii) to the extent that such representations and warranties specifically refer to an earlier date, they shall be true and correct in all material respects as of such earlier date except to the extent qualified by materiality, then they shall be true and correct as of such earlier date.

(e)The Credit Agreement (as amended hereby), and the obligations of the Loan Parties thereunder and under the other Loan Documents, are hereby ratified and confirmed and shall remain in full force and effect according to their terms. This Amendment shall for all purposes constitute a Loan Document.

(f)Each Guarantor (a) acknowledges and consents to all of the terms and conditions of this Amendment, (b) affirms all of its obligations under the Loan Documents and (c) agrees that this Amendment and all documents executed in connection herewith do not operate to reduce or discharge its obligations under the Loan Documents.

i.Each Loan Party has taken all necessary corporate or limited liability company action to authorize the execution, delivery and performance of this Amendment.

ii.This Amendment has been duly executed and delivered by each of the Loan Parties and constitutes each of the Loan Parties’ legal, valid and binding obligations, enforceable in accordance with its terms, except as

such enforceability may be limited by Debtor Relief Laws and general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law).

iii.No consent, approval, authorization or order of, or filing, registration or qualification with, any Governmental Authority or any other Person with respect to any Contractual Obligation is required in connection with the execution, delivery or performance by any Loan Party of this Amendment other than those that have already been obtained and are in full force and effect or the failure of which to have obtained would not reasonably be expected to have a Material Adverse Effect.

(h)This Amendment may be executed in any number of counterparts, each of which when so executed and delivered shall be an original, but all of which shall constitute one and the same instrument. Delivery of an executed counterpart of this Amendment by telecopy shall be effective as an original and shall constitute a representation that an executed original shall be delivered. This Amendment may be in the form of an Electronic Record (as defined herein) and may be executed using Electronic Signatures (as defined herein) (including, without limitation, facsimile and .pdf) and shall be considered an original, and shall have the same legal effect, validity and enforceability as a paper record. For the avoidance of doubt, the authorization under this paragraph may include, without limitation, use or acceptance by the arrangers of a manually signed paper communication which has been converted into electronic form (such as scanned into .pdf format), or an electronically signed communication converted into another format, for transmission, delivery and/or retention. Notwithstanding anything contained herein to the contrary, the Administrative Agent is under no obligation to accept an Electronic Signature in any form or in any format unless expressly agreed to by the Administrative Agent pursuant to procedures approved by it; provided, further, without limiting the foregoing, (a) to the extent the Administrative Agent has agreed to accept such Electronic Signature, the Administrative Agent shall be entitled to rely on any such Electronic Signature purportedly given by or on behalf of the Loan Parties without further verification and (b) upon the request of the Administrative Agent any Electronic Signature shall be promptly followed by a manually executed, original counterpart. “Electronic Record” and “Electronic Signature” shall have the meanings assigned to them, respectively, by 15 USC §7006, as it may be amended from time to time.

(i)THIS AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER AND ANY CLAIMS, CONTROVERSY, DISPUTE OR CAUSE OF ACTION (WHETHER IN CONTRACT OR TORT OR OTHERWISE) BASED UPON, ARISING OUT OF OR RELATING TO THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

    Each of the parties hereto has caused a counterpart of this Amendment to be duly executed and delivered as of the date first above written.