SM ENERGY ANNOUNCES EXPIRATION AND FINAL TENDER RESULTS OF PREVIOUSLY ANNOUNCED CASH TENDER OFFER

DENVER, April 2, 2026 /PRNewswire/ -- SM Energy Company ("SM Energy") (NYSE: SM) today announced the final tender results of the previously announced cash tender offer to purchase (the "Tender Offer") up to $1,000,000,000 (the "Maximum Tender Amount") aggregate principal amount of the outstanding 8.375% Senior Notes due 2028 (CUSIP Numbers Rule 144A: 17888HAA1 / Reg. S: U1638HAA5) (the "Notes"), originally issued by Civitas Resources, Inc. ("Civitas"), and assumed by SM Energy in connection with the closing of its merger with Civitas, subject to the terms and conditions set forth in the Offer to Purchase dated March 4, 2026 (as it may be amended or supplemented from time to time, the "Offer to Purchase").