Haynesville Core Operations and ESG Overview

Haynesville - Core Stacked Pay Position Operational Plan(¹) Rigs Frac fleets 2023E LOUISIANA 7-8 son Caddo ty Parish 2-3 Wells drilled 60-65 % Haynesville / Middle Bossier 50% / 50% Wells completed 64-69 Panola County De Soto Parish % Haynesville / Middle Bossier 50% / 50% Wells to sales TEXAS % Haynesville / Middle Bossier Average lateral length Base decline 70-75 50% / 50% ~8,500 Capital Program (1) D&C capital $/lateral foot Cost Structure ($/Mcf) LOE -55% doches unty 2023E $1.1B $1.3B $1,950 $2,150 2023E $0.84 $0.90 TOTI $0.22 $0.26 Natural Gas Discount to NYMEX ($/Mcf)(2) ($0.30 - $0.40) 1) Based on midpoint of guidance and related activity levels. 2) Discount to Henry Hub including transportation costs and heating content adjustment. Shelby County Bossier Parish swn Southwestern EnergyⓇ WeL---- Parish SWN Acreage Haynesville Core Middle Bossier Core Red River Parish Bienville Parish Natchitoches Parish Sabine Parish LOUISIANA 100% Gas Haynesville Net Acres: 286,000 2023E Net Production: ~1.8 Bcfe/day(1) 57.5% 40% $2.1B D&C(1) 4.6 Bcfe/d(1) 42.5% 60% Haynesville Appalachia 13

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