FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * O'Beirne Colin P   2. Issuer Name and Ticker or Trading Symbol SOUTHWESTERN ENERGY CO [SWN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Vice President and Controller (Last) (First) (Middle) 10000 ENERGY DRIVE, P. O. BOX 12359 3. Date of Earliest Transaction (Month/Day/Year) 02/26/2019 (Street) SPRING, TX 77391 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 02/27/2019   M   9,015 A $ 0 (1) 35,121 D   Common Stock 02/27/2019   D   9,015 D $ 4.29 26,106 D   Common Stock               2,353.7529 I by 401K

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Unit

$ 0 (1)

02/27/2019

M

9,015

(2)

(2)

Common Stock

9,015

$ 0

27,045

D

Restricted Stock Unit

(3)

02/26/2019

A

53,580

(4)

(4)

Common Stock

53,580

$ 0

53,580

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
O'Beirne Colin P 10000 ENERGY DRIVE P. O. BOX 12359 SPRING, TX 77391			Vice President and Controller

Signatures

/s/ Melissa D. McCarty, attorney-in-fact for Colin P. O'Beirne		02/28/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Each Restricted Stock Unit ("RSU") has the economic equivalent of one share of Southwestern Energy Company ("SWN") common stock. The RSUs vesting on February 27, 2019 were settled in cash based on the closing price of SWN common stock on the vesting date.
(2)	On February 27, 2018, the reporting person was granted 36,060 RSUs, vesting in four 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 RSUs will be settled in shares of SWN common stock, cash, or a combination of shares of SWN common stock and cash.
(3)	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.
(4)	On February 26, 2019, the reporting person was granted RSUs, vesting in four equal installments beginning on the first anniversary of the grant date, or immediately upon death, disability, retirement at age 65 with the required years of service, or a change in control. Vesting RSUs will be settled in shares of SWN common stock, cash, or a combination of shares of SWN common stock and cash.

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