Haynesville Core Operations and ESG Overview

Portfolio Optionality Across Deep High Return Inventory Swn Basin Haynesville Southwestern Energy® Commodity Liquids 13% Haynesville 40% 4.6 Bcfe/d net production (1) Appalachia 60% Basin, commodity and end market diversification reduce risk and strengthen the sustainability of free cash flow generation 44% 15 Years core inventory 1) Based on midpoint of guidance. 2) Estimated based on 2023 guidance, contracted firm transportation and firm sales agreements Appalachia 56% 4.6 Bcfe/d net production (1) Gas 87% Premium Sales Locations Other 3% CityGate 6% ~1/3 gas sold to LNG markets Appalachia 26% Sales Locations marketed gross production (2) LNG Corridor/ Gulf Coast 65% 10

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