0001842022-25-000003 Sample Contracts

Contract
First Supplemental Indenture • February 26th, 2025 • DT Midstream, Inc. • Natural gas transmission

First Supplemental Indenture (this “Supplemental Indenture”), dated as of January 30, 2025, among DT Midstream, Inc. (the “Issuer”), Guardian Pipeline, L.L.C. (“Guardian”), Midwestern Gas Transmission Company (“Midwestern”), Viking Gas Transmission Company (“Viking”) and DTM Interstate Transportation, LLC (“DTM Interstate”, and, collectively with Guardian, Midwestern and Viking, the “Guaranteeing Subsidiaries”), the other Guarantors (as defined in the Indenture referred to herein) and U.S. Bank Trust Company, National Association (as successor in interest to U.S. Bank National Association), as trustee under the Indenture referred to below (the “Trustee”).

Contract
Second Supplemental Indenture • February 26th, 2025 • DT Midstream, Inc. • Natural gas transmission

Second Supplemental Indenture (this “Supplemental Indenture”), dated as of January 30, 2025, among Guardian Pipeline, L.L.C. (“Guardian”), Midwestern Gas Transmission Company (“Midwestern”), Viking Gas Transmission Company (“Viking”) and DTM Interstate Transportation, LLC (“DTM Interstate”, and, collectively with Guardian, Midwestern and Viking, the “Guaranteeing Subsidiaries”) and U.S. Bank Trust Company, National Association, as trustee under the Indenture referred to below (in such capacity, the “Trustee”), and as Notes Collateral Agent (as defined in the Indenture referred to herein).

Contract
First Supplemental Indenture • February 26th, 2025 • DT Midstream, Inc. • Natural gas transmission

First Supplemental Indenture (this “Supplemental Indenture”), dated as of January 30, 2025, among Guardian Pipeline, L.L.C. (“Guardian”), Midwestern Gas Transmission Company (“Midwestern”), Viking Gas Transmission Company (“Viking”) and DTM Interstate Transportation, LLC (“DTM Interstate”, and, collectively with Guardian, Midwestern and Viking, the “Guaranteeing Subsidiaries”) and U.S. Bank Trust Company, National Association, as trustee under the Indenture referred to below (in such capacity, the “Trustee”), and as Notes Collateral Agent (as defined in the Indenture referred to herein).