Amendment No. 1 to Credit Agreement and Consent, dated as of October 24, 2024, among FET, as borrower, the banks and other financial institutions party thereto, as lenders, and JPMorgan Chase Bank, N.A., as administrative agent

This AMENDMENT NO. 1 TO CREDIT AGREEMENT, dated as of October 24, 2024 (this “Amendment”), to the Existing Credit Agreement referred to below, is entered into by and among FirstEnergy Transmission, LLC (“FET” or the “Borrower”), each of the Lenders party hereto, JPMorgan Chase Bank, N.A., as Administrative Agent for the Lenders, and each of the Fronting Banks party hereto.

1.    The Borrower, the Lenders, the Administrative Agent and the Fronting Banks are parties to that certain Credit Agreement, dated as of October 20, 2023 (as amended prior to the date hereof, the “Existing Credit Agreement”; the Existing Credit Agreement, as amended by this Amendment, the “Credit Agreement”). Capitalized terms used herein and not otherwise defined herein shall have the meanings ascribed to such terms in the Credit Agreement.

2.    The Borrower has requested that each Lender extend the Termination Date applicable to such Lender for an additional one year period, from October 20, 2028 to October 20, 2029 (the “Extension”) and each Lender has agreed to the Extension as to itself.

3.    The Borrower desires to amend the Existing Credit Agreement as set forth herein, and the Lenders, the Administrative Agent and the Fronting Banks have agreed to such amendments on the terms and conditions set forth herein.

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

SECTION 1. Amendments to Existing Credit Agreement.

(a)    Section 1.01 of the Existing Credit Agreement is hereby amended by adding the following terms in the proper alphabetical order therein:

(i)    “First Amendment” means the Amendment No. 1 to Credit Agreement, dated as of October 24, 2024, by and among the Borrower, each of the Lenders party thereto, the Administrative Agent, and each of the Fronting Banks party thereto.

(ii)    “First Amendment Effective Date” means the Amendment Effective Date (as defined in the First Amendment), which date is October 24, 2024.

(b)    The definition of the term “Applicable Margin” set forth in Section 1.01 of the Existing Credit Agreement is hereby amended by replacing the table set forth therein with the below table:

(c)    The definition of the term “Fee Letters” set forth in Section 1.01 of the Existing Credit Agreement is hereby amended as follows:

(i)    by deleting the word “and” at the end of clause (ii) thereof; and

(ii)    by adding the following at the end of clause (iii) thereof:

“, (iv) the fee letter, dated September 19, 2024, by and among the Borrower, JPMorgan, Mizuho, PNC Capital Markets LLC and PNC Bank and (v) the fee letter, dated September 19, 2024, by and among the Borrower, Citigroup Global Markets Inc., Morgan Stanley Senior Funding, Inc., Royal Bank of Canada, Barclays Bank PLC, BofA Securities, Inc., Bank of America, N.A., The Bank of Nova Scotia and Wells Fargo Securities, LLC.”

(d)    The definition of the term “Termination Date” set forth in Section 1.01 of the Existing Credit Agreement is hereby amended and restated in its entirety as follows:

““Termination Date” means October 20, 2029 subject, for certain Lenders, to the extension described in Section 2.19 hereof, or, in any case, the earlier date of termination in whole of the Commitments pursuant to Section 2.06 or Section 6.01 hereof.”

(e)    Section 2.05(a) of the Existing Credit Agreement is hereby amended by replacing the table set forth therein with the below table:

(f)    Section 2.05(d) of the Existing Credit Agreement is hereby amended and restated in its entirety as follows:

(d)    The Borrower agrees to pay to each Fronting Bank, for its own account, certain fees payable by the Borrower in such amounts and payable on such terms as set forth in the Fee Letters or separately agreed upon between the Borrower and such Fronting Bank.

(g)    Section 2.19(a) of the Existing Credit Agreement is hereby amended by amending and restating the last sentence thereof in its entirety as follows:

“Following the First Amendment Effective Date, the Borrower may request no more than two extensions pursuant to this Section 2.19.”

(h)    Section 5.03(e) of the Existing Credit Agreement is hereby amended by amending and restating the proviso thereof in its entirety as follows:

“provided, however, that the Borrower may not use such proceeds in connection with any Hostile Acquisition.”

(i)    Section 6.01 of the Existing Credit Agreement is hereby amended by amending and restating clauses (i) and (j) thereof in their entirety as follows:

“(i) (i) Either FE or North American Transmission Company II L.P. shall fail to own directly or indirectly 50.1% or more of the issued and outstanding shares of common stock of the Borrower, (ii) any Person or two or more Persons acting in concert shall have acquired beneficial ownership (within the meaning of Rule 13d-3 of the SEC under the Exchange Act), directly or indirectly, of securities of

the Borrower (or other securities convertible into such securities) representing 30% or more of the combined voting power of all securities of the Borrower, entitled to vote in the election of directors; or (iii) commencing after the date of this Agreement, individuals who as of the date of this Agreement were directors shall have ceased for any reason to constitute a majority of the Board of Directors of the Borrower, unless the Persons replacing such individuals were nominated by the stockholders or the Board of Directors of the Borrower in accordance with the Borrower’s Organizational Documents (each a “Change of Control”); or

(j) (i) Any indictment shall be issued against the Borrower or any Significant Subsidiary of the Borrower arising from a purported violation of any Anti-Corruption Law, or (ii) the Borrower or any Significant Subsidiary of the Borrower shall have entered into any deferred prosecution agreement (or similar agreement) with respect to a purported violation of any Anti-Corruption Law (other than the DPA); or”

(j)    Schedule I to the Existing Credit Agreement is hereby amended and restated in its entirety as set forth on Schedule I hereto.

(a)    New Lender. Wells Fargo Bank, National Association (the “New Lender”) (i) represents and warrants that (A) it has full power and authority, and has taken all action necessary, to execute and deliver this Amendment and to consummate the transactions contemplated hereby and by the Credit Agreement and to become a Lender under the Credit Agreement, (B) it satisfies the requirements, if any, specified in the Credit Agreement and under applicable law that are required to be satisfied by it in order to acquire its Commitments under the Credit Agreement and become a Lender, (C) from and after the Amendment Effective Date, it shall be bound by the provisions of the Credit Agreement as a Lender thereunder and, to the extent of its Commitments, shall have the obligations of a Lender thereunder, (D) it is sophisticated with respect to decisions to acquire assets of the type represented by its Commitments and either it, or the Person exercising discretion in making its decision to acquire its Commitments, is experienced in acquiring assets of this type, and (E) it has received a copy of the Existing Credit Agreement and the Credit Agreement, together with copies of the most recent financial statements delivered pursuant to Sections 5.01(g) of the Existing Credit Agreement, as applicable, and such other documents and information as it has deemed appropriate to make its own credit analysis and decision to enter into this Amendment and to become a Lender under the Credit Agreement on the basis of which it has made such analysis and decision independently and without reliance on the Administrative Agent, any “Joint Lead Arranger” or any other Lender or their respective Related Parties, (ii) appoints and authorizes the Administrative Agent to take such action as agent on its behalf and to exercise such powers under the Loan Documents as are delegated to the Administrative Agent by the terms thereof, together with such powers as are reasonably incidental thereto, and (iii) agrees that (A) it will, independently and without reliance on the Administrative Agent, any “Joint Lead Arranger” or any other Lender or their respective Related Parties, and based on such documents and information as it shall deem

appropriate at the time, continue to make its own credit decisions in taking or not taking action under the Loan Documents, and (B) it will perform in accordance with their terms all of the obligations which by the terms of the Loan Documents are required to be performed by it as a Lender.

(b)    Reallocations, Etc. Notwithstanding anything to the contrary in the Existing Credit Agreement or the Credit Agreement:

(i)    as of the Amendment Effective Date, each Lender’s Commitment shall be as set forth on Schedule I hereto;

(ii)    the New Lender shall make available to the Administrative Agent such amounts in immediately available funds as the Administrative Agent shall determine, for the benefit of the other Lenders, as being required in order to cause, after giving effect to this Amendment, each Lender’s Commitment to be as set forth on Schedule I hereto;

(iii)    in connection with the foregoing, the Administrative Agent shall make such reallocations, sales, assignments or other relevant actions in respect of the “Commitments” (as defined in and in effect under the Existing Credit Agreement) as are necessary in order that each Lender’s Commitment under the Credit Agreement is as set forth on Schedule I hereto on the Amendment Effective Date, and the Borrower and each Lender that was a “Lender” under the Existing Credit Agreement hereby agrees that (A) such reallocation, sales and assignments shall be deemed to have been effected by way of, and subject to the terms and conditions of, Assignment and Assumptions, and no other documents or instruments shall be, or shall be required to be, executed in connection with such assignments (all of which are hereby waived), (B) such reallocation shall satisfy the assignment provisions of Section 8.08 of the Existing Credit Agreement and (C) in connection with such reallocation, sales, assignments or other relevant actions, the Borrower shall pay all interest and fees outstanding under the Existing Credit Agreement and accrued to the date hereof to the Administrative Agent for the account of the Lenders party hereto, together with any losses, costs and expenses incurred by Lenders under the Existing Credit Agreement; and

(iv)    each of the signatories hereto that is also a party to the Existing Credit Agreement hereby consents to any of the actions described in this Section 2(b) and agrees that any and all required notices and required notice periods under the Existing Credit Agreement in connection with any of the actions described in this Section 2(b) on the Amendment Effective Date are hereby waived and of no force and effect.

SECTION 3. Conditions to Effectiveness. This Amendment shall become effective as of the date first above written (the “Amendment Effective Date”) when, and only when, the following conditions have been satisfied (or waived by the Administrative Agent and the Lenders party hereto in their sole discretion):

(a)    The Administrative Agent shall have received, in immediately available funds, to the extent invoiced prior to the Amendment Effective Date, reimbursement or payment of all

reasonable out-of-pocket costs and expenses of the Administrative Agent (including, but not limited to, the reasonable fees and expenses of counsel (including, but not limited to, one local counsel and any specialist counsel in each relevant jurisdiction) to the Administrative Agent) required to be reimbursed or paid by the Borrower hereunder or under any other Loan Document.

(b)    The Administrative Agent shall have received the following documents, each document being dated the date of receipt thereof by the Administrative Agent (which date shall be the same for all such documents, except as otherwise specified below), in form and substance satisfactory to the Administrative Agent:

(i)    either (A) counterparts of this Amendment duly executed by the Borrower, the Lenders, the Administrative Agent, and the Fronting Banks or (B) written evidence satisfactory to the Administrative Agent that such parties have signed counterparts of this Amendment;

(ii)    certified copies of (A) the resolutions of the Board of Directors of the Borrower approving this Amendment and the Credit Agreement and (B) all documents evidencing any other necessary corporate action with respect to this Amendment and the Credit Agreement;

(iii)    a certificate of the Secretary or an Assistant Secretary of the Borrower certifying (A) the names and true signatures of the officers of the Borrower authorized to sign this Amendment and the other documents to be delivered hereunder, (B) that attached thereto are true and correct copies of the Organizational Documents of the Borrower, in each case as in effect on such date, and (C) that true and correct copies of all governmental and regulatory authorizations and approvals required for the due execution, delivery and performance by the Borrower of this Amendment and the Credit Agreement have previously been delivered to the Administrative Agent and remain in full force and effect on such date;

(iv)    a certificate of an Authorized Officer of the Borrower (the statements in which shall be true) certifying that, both before and after giving effect to this Amendment, (A) no event has occurred and is continuing that constitutes an Event of Default or an Unmatured Default with respect to the Borrower and (B) all representations and warranties of the Borrower contained in the Credit Agreement and each other Loan Document to which the Borrower is a party are true and correct in all material respects (or in the case of any representation or warranty already qualified by materiality, true and correct in all respects) on and as of the Amendment Effective Date, as though made on and as of such date (other than any such representation or warranty that by its terms refers to a specific date, in which case such representation and warranty shall be true and correct as of such specific date); and

(v)    an opinion of Morgan, Lewis & Bockius LLP, special counsel for the Borrower.

(c)    The Administrative Agent shall have received all documentation and information required by regulatory authorities under applicable “know your customer” and anti-money laundering rules and regulations, including, without limitation, the Patriot Act and the Beneficial Ownership Regulation, to the extent such documentation or information is requested by the Administrative Agent on behalf of any Lender prior to the Amendment Effective Date.

SECTION 4. Representations and Warranties. The Borrower represents and warrants as follows:

(a)    Due Authorization. The execution, delivery and performance by it of this Amendment and each other Loan Document being executed and delivered in connection with this Amendment to which the Borrower is a party have been duly authorized by all necessary corporate action on its part and do not, and will not, require the consent or approval of its shareholders or members, as the case may be, other than such consents and approvals as have been duly obtained, given or accomplished.

(b)    No Violation, Etc. Neither the execution, delivery or performance by it of this Amendment, any other Loan Document being executed and delivered in connection with this Amendment to which it is a party, nor the consummation by it of the transactions contemplated hereby or thereby, nor compliance by it with the provisions hereof or thereof, nor the performance by it of the Credit Agreement, contravenes or will contravene, or results or will result in a breach of, any of the provisions of its Organizational Documents, any Applicable Law, or any indenture, mortgage, deed of trust, lease, license or any other agreement or instrument to which it or any of its Subsidiaries is party or by which its property or the property of any of its Subsidiaries is bound, or results or will result in the creation or imposition of any Lien upon any of its property or the property of any of its Subsidiaries, except to the extent such contravention or breach, or the creation or imposition of any such Lien, individually or in the aggregate, has not had and would not reasonably be expected to have a Material Adverse Effect with respect to the Borrower.

(c)    Governmental Actions. No Governmental Action is or will be required in connection with (i) the execution, delivery or performance by it of, or the consummation by it of the transactions contemplated by, this Amendment or any other Loan Document being executed and delivered in connection with this Amendment to which it is, or is to become, a party, or (ii) the performance by it of the Credit Agreement.

(d)    Execution and Delivery. This Amendment and the other Loan Documents being executed and delivered in connection with this Amendment to which it is, or is to become, a party have been or will be (as the case may be) duly executed and delivered by it, and each of this Amendment and the Credit Agreement is, and upon execution and delivery thereof each such other Loan Document will be, the legal, valid and binding obligation of it enforceable against it in accordance with its terms, subject, however, solely with respect to this Amendment, the Credit Agreement and such other Loan Document, to the application by a court of general principles of equity and to the effect of any applicable bankruptcy, insolvency, reorganization, moratorium or similar laws affecting creditors’ rights generally.

(e)    No Material Misstatements. The reports, financial statements and other written information furnished by or on behalf of the Borrower to the Administrative Agent, any Fronting Bank or any Lender pursuant to or in connection with this Amendment and the transactions contemplated hereby, when taken together with the Disclosure Documents, do not contain, when taken as a whole, any untrue statement of a material fact and do not omit, when taken as a whole, to state any fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading in any material respect.

(f)    Litigation. There are no actions, suits or proceedings by or before any arbitrator or Governmental Authority pending against or, to the knowledge of the Borrower, threatened against the Borrower or any of its Subsidiaries that involve this Amendment, the Credit Agreement or any other Loan Document.

(g)    No Default. No Unmatured Default or Event of Default has occurred and is continuing or would occur as a result of (i) the execution, delivery or performance by the Borrower of this Amendment or any other Loan Document being executed and delivered in connection with this Amendment to which it is, or is to become, a party or (ii) the performance by the Borrower of the Credit Agreement.

(h)    Anti-Corruption Laws. No proceeds of any Borrowing have been used in violation of any Anti-Corruption Law.

SECTION 5. Reference to and Effect on the Credit Agreement and the Other Loan Documents.

(a)    Except as expressly amended hereby, all of the representations, warranties, terms, covenants and conditions of the Credit Agreement and the other Loan Documents shall remain in full force and effect in accordance with their respective terms and are hereby in all respects ratified and confirmed. The amendments set forth herein shall be limited precisely as provided for herein and shall not be deemed to be a waiver of, release of, amendment of, consent to, departure from or modification of any term or provision of the Loan Documents or any other document or instrument referred to therein or of any transaction or further or future action on the part of the Borrower requiring the consent of the Administrative Agent, the Fronting Banks or the Lenders except to the extent specifically provided for herein. The Administrative Agent and the Lenders have not and shall not be deemed to have waived any of their respective rights and remedies against the Borrower for any existing or future Unmatured Default or Event of Default. The Administrative Agent, the Fronting Banks and the Lenders reserve the right to insist on strict compliance with the terms of the Credit Agreement and the other Loan Documents, and the Borrower expressly acknowledges such reservation of rights. Any future or additional amendment of any provision of the Credit Agreement or any other Loan Document shall be effective only if set forth in a writing separate and distinct from this Amendment and executed by the appropriate parties in accordance with the terms thereof.

(b)    Upon the effectiveness of this Amendment: (i) each reference in the Existing Credit Agreement to “this Agreement”, “hereunder”, “hereof” or words of like import referring to the Existing Credit Agreement shall mean and be a reference to the Credit Agreement; and (ii)

each reference in any other Loan Document to “the Credit Agreement”, “thereunder”, “thereof” or words of like import referring to the Existing Credit Agreement shall mean and be a reference to the Credit Agreement. This Amendment shall constitute a “Loan Document” for all purposes under the Credit Agreement and the other Loan Documents.

(c)    The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate as a release or waiver of any right, power or remedy of the Lenders, the Administrative Agent or the Fronting Banks under the Existing Credit Agreement or any other Loan Document, nor constitute a release or a waiver of any provision of the Existing Credit Agreement or any other Loan Document. The execution, delivery and effectiveness of this Amendment shall not constitute a novation of any amount owing under the Existing Credit Agreement or any other Loan Document and all amounts owing in respect of principal, interest, fees and other amounts pursuant to the Existing Credit Agreement and the other Loan Documents shall, to the extent not paid on or prior to the Amendment Effective Date, continue to be owing under the Credit Agreement or such other Loan Documents until paid in accordance therewith.

SECTION 6. Costs and Expenses. The Borrower agrees to pay on demand all reasonable out-of-pocket costs and expenses incurred by the Administrative Agent, each Fronting Bank and each Lender in connection with the preparation, execution, delivery, syndication and administration of this Amendment and the other documents to be delivered hereunder, including, without limitation, the reasonable fees and out-of-pocket expenses of counsel (including, but not limited to, one local counsel and any specialist counsel in each relevant jurisdiction) for the Administrative Agent, the Fronting Banks and the Lenders with respect thereto and with respect to advising the Administrative Agent, the Fronting Banks and each Lender as to their rights and responsibilities under this Amendment. The Borrower further agrees to pay on demand all reasonable out-of-pocket costs and expenses, if any (including, without limitation, reasonable fees and expenses of counsel), incurred by the Administrative Agent, the Fronting Banks and the Lenders in connection with the enforcement (whether through negotiations, legal proceedings or otherwise) of this Amendment, the Credit Agreement and the other documents to be delivered hereunder, including, without limitation, counsel fees and expenses in connection with the enforcement of rights under this Section. The Borrower acknowledges and agrees that, pursuant to Section 8.05(a) of the Credit Agreement, it is required to pay, among other costs and expenses set forth therein, the reasonable fees and expenses of counsel for the Administrative Agent (including, but not limited to, any local counsel and any specialist counsel for the Administrative Agent), in accordance with the terms thereof.

SECTION 7. Counterparts. This Amendment may be executed in any number of counterparts (and by different parties hereto in separate counterparts), each of which when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute but one and the same instrument. Delivery of an executed signature page to this Amendment by facsimile or other electronic transmission (including, without limitation, by Adobe portable document format file (also known as a “PDF” file)) shall be as effective as delivery of a manually signed counterpart of this Amendment. The words “execution,” “executed,” “signed,” “signature,” “delivery,” and words of like import in or relating to this

Amendment or any document to be signed in connection with this Amendment and the transactions contemplated hereby shall be deemed to include electronic signatures, deliveries or the keeping of records in electronic form, each of which shall be of the same legal effect, validity or enforceability as a manually executed signature, physical delivery thereof or the use of a paper-based recordkeeping system, as the case may be, to the extent and as provided for in any applicable law, including the Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act, or any other similar state laws based on the Uniform Electronic Transactions Act; provided, that nothing herein shall require the Administrative Agent to accept electronic signatures in any form or format without its prior written consent; provided, further, that, without limiting the foregoing, upon the request of the Administrative Agent, any electronic signature shall be promptly followed by such manually executed counterpart.

SECTION 8. Governing Law. This Amendment shall be governed by, and construed in accordance with, the laws of the State of New York.

SECTION 9. Miscellaneous. This Amendment shall be subject to the provisions of Sections 8.05, 8.10, 8.11 and 8.12 of the Credit Agreement, each of which is incorporated by reference herein, mutatis mutandis.

SECTION 10. Release. In consideration of, among other things, the Administrative Agent’s, the Fronting Banks’ and the Lenders’ execution and delivery of this Amendment, the Borrower, on behalf of itself and its agents, representatives, officers, directors, advisors, employees, subsidiaries, affiliates, successors and assigns (collectively, “Releasors”), hereby forever agrees and covenants not to sue or prosecute against any Releasee (as hereinafter defined) and hereby forever waives, releases and discharges, to the fullest extent permitted by law, each Releasee from any and all claims (including, without limitation, crossclaims, counterclaims, rights of set-off and recoupment), actions, causes of action, suits, debts, liens, warranties, damages and consequential damages, judgments, costs or expenses whatsoever, that such Releasor now has or hereafter may have, of whatsoever nature and kind, whether now existing or hereafter arising, whether arising at law or in equity (collectively, the “Claims”), against any or all of the Credit Parties in any capacity and their respective affiliates, subsidiaries, shareholders and “controlling persons” (within the meaning of the federal securities laws), and their respective successors and assigns and each and all of the officers, directors, employees, agents, attorneys, advisors and other representatives of each of the foregoing (collectively, the “Releasees”), based in whole or in part on facts existing on or before the Amendment Effective Date, that relate to, arise out of or otherwise are in connection with: (i) any or all of the Loan Documents or transactions contemplated thereby or any actions or omissions in connection therewith; or (ii) any aspect of the dealings or relationships between or among the Borrower, on the one hand, and any or all of the Credit Parties, on the other hand, relating to any or all of the documents, transactions, actions or omissions referenced in clause (i) hereof. The receipt by the Borrower of any Advances or other financial accommodations made by any Credit Party after the date hereof shall constitute a ratification, adoption, and confirmation by such party of the foregoing general release of all Claims against the Releasees that are based in whole or in part on facts existing on or prior to the date of receipt of any such Advances or other financial

accommodations. In entering into this Amendment, the Borrower consulted with, and has been represented by, legal counsel and expressly disclaims any reliance on any representations, acts or omissions by any of the Releasees and hereby agrees and acknowledges that the validity and effectiveness of the releases set forth above do not depend in any way on any such representations, acts and/or omissions or the accuracy, completeness or validity thereof. The provisions of this Section 10 shall survive the termination of this Amendment, the Credit Agreement, the other Loan Documents and payment in full of the Advances.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed by their respective officers thereunto duly authorized, as of the date first above written.