X0508 4 2024-03-11 0000007332 SOUTHWESTERN ENERGY CO SWN 0001848818 Huggins Andrew T 10000 ENERGY DRIVE P. O. BOX 12359 SPRING TX 77391-2359 1 SVP and Division Head 0 Common Stock 2024-03-11 4 M 0 11313 0 A 207266 D Common Stock 2024-03-11 4 F 0 2755 7.01 D 204511 D Common Stock 12197.1226 I by 401(k) Plan Restricted Stock Unit 2024-03-11 4 M 0 11313 0 D Common Stock 11313 0 D Each Restricted Stock Unit ("RSU") has the economic equivalent of one share of Southwestern Energy Company ("SWN") common stock. The RSUs vesting on March 11, 2024 were settled in stock based on the closing price of SWN common stock on the vesting date. Represents net share settlement of common stock award to satisfy withholding taxes. Each RSU represents a contingent right to receive one share of SWN common stock or an amount in cash equal to the Fair Market Value of one share of SWN common stock. On March 11, 2021, the reporting person was granted restricted stock units, vesting in three equal installments beginning on the first anniversary of the grant date, or immediately upon death, disability, retirement at age 65 with required years of service, or a change in control. Vesting units will be settled in shares of SWN common stock, cash, or a combination of shares of SWN common stock and cash. /s/ Melissa D. McCarty, attorney-in-fact for Mr. Huggins 2024-03-13