On September 3, 2021 (the “Settlement Date”), Southwestern Energy Company (the “Company”) completed its previously announced offer to eligible holders of outstanding notes issued by Indigo Natural Resources LLC (“Indigo”) to exchange (the “Exchange Offer”) any and all of their outstanding notes (the “Indigo Notes”) for (1) up to $700,000,000 aggregate principal amount of new notes issued by the Company and (2) cash. The Exchange Offer was not registered under the Securities Act of 1933, as amended (the “Securities Act”), or the securities laws of any other jurisdiction. In conjunction with the Exchange Offer, the Company solicited consents (the “Consent Solicitation”) to adopt certain proposed amendments to the indenture governing the Indigo Notes (the ”Indigo Indenture”) to eliminate substantially all of the restrictive covenants and events of default (the “Proposed Amendments”), and, as previously announced, on August 26, 2021, entered into a First Supplemental Indenture to effect the Proposed Amendments (the “Indigo Supplemental Indenture”), following receipt of the requisite consents in the Consent Solicitation. The Indigo Supplemental Indenture became operative on the Settlement Date. An aggregate of $697,572,000 principal amount of Indigo Notes were validly tendered and accepted for purchase by the Company pursuant to the Exchange Offer and Consent Solicitation, in exchange for $697,493,000 aggregate principal amount of new 5.375% Notes due 2029 (the “2029 Notes”) issued by the Company and an aggregate of $3,475,443.06 in cash. The accepted Indigo Notes have been retired and canceled and will not be reissued. Following such cancellation, an aggregate of $2,428,000 principal amount of Indigo Notes remains outstanding pursuant to the Indigo Indenture, as supplemented by the Indigo Supplemental Indenture. The Exchange Offer and Consent Solicitation have expired, and is no longer open to participation by any holders of the Indigo Notes.