Southwestern Energy Investor Presentation

Optimizing Access to Premium Gulf Coast Markets SWN Gulf Coast Transportation Portfolio (1) LNG Corridor LEAP (2) 2023E 2024E 1.2 Bcf/d 1.5 Bcf/d Momentum NG3 0.3 Bcf/d Acadian 0.2 Bcf/d 0.2 Bcf/d Midcoast 0.2 Bcf/d 0.1 Bcf/d Other (3) LNG Corridor 0.2 Bcf/d 0.2 Bcf/d LNG Corridor- ~1.8 Bcf/d -2.3 Bcf/d Line CP Midcoast LEAP Greater Gulf Coast 2023E 2024E Gulf South 0.3 Bcf/d 0.3 Bcf/d ETC Tiger 0.3 Bcf/d 0.3 Bcf/d Enable CP 0.3 Bcf/d 0.3 Bcf/d Rover 0.3 Bcf/d 0.3 Bcf/d Corpus Christi LNG MXP/GXP 0.2 Bcf/d 0.2 Bcf/d Greater Gulf Coast ~1.4 Bcf/d ~1.4 Bcf/d Rio Grande LNG Total ~3.2 Bcf/d ~3.7 Bcf/d Perryville swn Southwestern EnergyⓇ Tiger, Gulf South Acadian Momentum NG3 Gillis Hub FGT Z1, Tetco STX Freeport LNG Golden Pass LNG Sabine Pass LNG Port Arthur LNG Cameron LNG Calcasieu Pass LNG FGT Z2, Transco 65 Plaquemines LNG LNG facility, operational or under construction Market sales location SWN current firm transportation capacity SWN future firm transportation capacity Strategic connectivity and flow assurance from wellhead to inlet of LNG plants and industrial markets along the Gulf Coast 1) Company will optimize future transportation and may not elect to extend all transport. 2) LEAP capacity increases to 1.15 Bcf/d in the second half of 2023. 3) Columbia Gulf Delivered and TGP 500L 17

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