Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2022 Or ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ________ to ________ Commission file number: 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter) (St ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2022 Or ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ________ to ________ Commission file number: 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter) (S ...

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2021 Commission file number 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) Delaware 71-0205415 10000 Energy Dr ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2021 Or ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ________ to ________ Commission file number: 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2021 Or ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ________ to ________ Commission file number: 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter) Del ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended March 31, 2021 Or ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ________ to ________ Commission file number: 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter) (S ...

Table of Contents Index to Financial Statements UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2020 Commission file number 001-08246 Southwestern Energy Company (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) Delaware 71-0205415 10000 Energy Dr ...