PENNSYLVANIA PUBLIC UTILITY COMMISSION NOTICE TO BE PUBLISHED Joint Application Of American Transmission Systems, Incorporated, MidAtlantic Interstate Transmission, LLC, And Trans- Allegheny Interstate Line Company For All Of The Necessary Authority, Approvals, And Certificates Of Public Convenience Required To Lawfully Effectuate (1) The Purchase And Sale Agreement Of An Incremental Thirty Percent Equity Interest In FirstEnergy Transmission, LLC By North American Transmission Company II L.P.; (2) The Transfer Of Class B Membership Interests In Mid-Atlantic Interstate Transmission, LLC Held By FirstEnergy Corp. To FirstEnergy Transmission, LLC; (3) Where Necessary, Associated Affiliated Interest Agreements; And (4) Any Other Approvals Necessary To Complete The Contemplated Transaction. Docket Numbers: A-2023-3040481; A-2023-3040482; A-2023-3040483; G-2023-3040484; G-2023-3040485; G-2023-3040486 Formal protests and petitions to intervene must be filed in accordance with Title 52 of the Pennsylvania Code, on or before June 5, 2023. All filings must be made with the Secretary of the Pennsylvania Public Utility Commission, 400 North Street, 2nd Floor, Harrisburg, PA 17120, with a copy served on the Applicant. The documents filed in support of the Application are available ONLY online for inspection and copying on the Commission's website at www.puc.pa.gov, and at the Applicant's business address. ALL Parties to proceedings pending before the Commission must open and use an e-filing account through the Commission's website at www.puc.pa.gov or you may submit the filing by overnight delivery to: Secretary, Pennsylvania Public Utility Commission, 400 North Street, Harrisburg, Pennsylvania 17120. If a filing contains confidential or proprietary material, the filing is required to be submitted by overnight delivery. Large filings containing confidential or proprietary material may be submitted through the Commission's Share Point File system with advanced notice to the Commission prior to submittal. Applicants: American Transmission Systems, Incorporated, 76 South Main Street, Akron, OH 44308 Mid-Atlantic Interstate Transmission, LLC, 76 South Main Street, Akron, OH 44308 Trans-Allegheny Interstate Line Company, 800 Cabin Hill Drive, Greensburg, PA 15601 Through and By Counsel for: Tori L. Giesler, Esquire, Angelina M. Umstead, Esquire FirstEnergy Service Company, 2800 Pottsville Pike, P.O. Box 16001, Reading, PA 19612-6001 Phone: 610-921-6658, E-mail: tgiesler@firstenergycorp.com, Email: aumstead@firstenergycorp.com And David B. MacGregor, Esquire, Lindsay A. Berkstresser, Esquire, Garrett P. Lent, Esquire, Nicholas A. Stobbe, Esquire Post & Schell, P.C., 17 North Second Street, 12th Floor, Harrisburg, PA 17101-1601, Phone: 717-731-1970, Fax: 717-731-1985, E-mail: dmacgregor@postschell.com, E-mail: Iberkstresser@postschell.com, E-mail: glent@postschell.com, E-mail: nstobbe@postschell.com PENNSYLVANIA PUBLIC UTILITY COMMISSION NOTICE TO BE PUBLISHED Joint Application Of American Transmission Systems , Incorporated , MidAtlantic Interstate Transmission , LLC , And Trans Allegheny Interstate Line Company For All Of The Necessary Authority , Approvals , And Certificates Of Public Convenience Required To Lawfully Effectuate ( 1 ) The Purchase And Sale Agreement Of An Incremental Thirty Percent Equity Interest In FirstEnergy Transmission , LLC By North American Transmission Company II L.P .; ( 2 ) The Transfer Of Class B Membership Interests In Mid - Atlantic Interstate Transmission , LLC Held By FirstEnergy Corp. To FirstEnergy Transmission , LLC ; ( 3 ) Where Necessary , Associated Affiliated Interest Agreements ; And ( 4 ) Any Other Approvals Necessary To Complete The Contemplated Transaction . Docket Numbers : A - 2023-3040481 ; A - 2023-3040482 ; A - 2023-3040483 ; G - 2023-3040484 ; G - 2023-3040485 ; G - 2023-3040486 Formal protests and petitions to intervene must be filed in accordance with Title 52 of the Pennsylvania Code , on or before June 5 , 2023. All filings must be made with the Secretary of the Pennsylvania Public Utility Commission , 400 North Street , 2nd Floor , Harrisburg , PA 17120 , with a copy served on the Applicant . The documents filed in support of the Application are available ONLY online for inspection and copying on the Commission's website at www.puc.pa.gov , and at the Applicant's business address . ALL Parties to proceedings pending before the Commission must open and use an e - filing account through the Commission's website at www.puc.pa.gov or you may submit the filing by overnight delivery to : Secretary , Pennsylvania Public Utility Commission , 400 North Street , Harrisburg , Pennsylvania 17120. If a filing contains confidential or proprietary material , the filing is required to be submitted by overnight delivery . Large filings containing confidential or proprietary material may be submitted through the Commission's Share Point File system with advanced notice to the Commission prior to submittal . Applicants : American Transmission Systems , Incorporated , 76 South Main Street , Akron , OH 44308 Mid - Atlantic Interstate Transmission , LLC , 76 South Main Street , Akron , OH 44308 Trans - Allegheny Interstate Line Company , 800 Cabin Hill Drive , Greensburg , PA 15601 Through and By Counsel for : Tori L. Giesler , Esquire , Angelina M. Umstead , Esquire FirstEnergy Service Company , 2800 Pottsville Pike , P.O. Box 16001 , Reading , PA 19612-6001 Phone : 610-921-6658 , E - mail : tgiesler@firstenergycorp.com , Email : aumstead@firstenergycorp.com And David B. MacGregor , Esquire , Lindsay A. Berkstresser , Esquire , Garrett P. Lent , Esquire , Nicholas A. Stobbe , Esquire Post & Schell , P.C. , 17 North Second Street , 12th Floor , Harrisburg , PA 17101-1601 , Phone : 717-731-1970 , Fax : 717-731-1985 , E - mail : dmacgregor@postschell.com , E - mail : Iberkstresser@postschell.com , E - mail : glent@postschell.com , E - mail : nstobbe@postschell.com