FORM 4
[X] 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
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                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

1. Name and Address of Reporting Person *

REVERE SHAUN M	2. Issuer Name and Ticker or Trading Symbol

SemGroup Corp [ SEMG ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
EVP US Commercial	
(Last)         (First)         (Middle)

6120 SOUTH YALE AVE., SUITE 1500	3. Date of Earliest Transaction (MM/DD/YYYY)

12/3/2019		
(Street)

TULSA, OK 74136
(City)       (State)       (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)

 	6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person	

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned	
1.Title of Security
(Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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 	12/3/2019 	 	A	  	29311 (1)	A	$0.00 	84496 	D 	 	
Common Stock 	12/3/2019 	 	F	  	7141 	D	$15.06 	77355 	D 	 	
Common Stock 	12/5/2019 	 	D	  	77355 (2)	D	$0.00 (2)	0 (3)	D 	 	

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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	7. Title and Amount of Securities Underlying Derivative Security
(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					

Explanation of Responses:	
(1) 	Represents shares of SemGroup's Class A Common Stock, par value $0.01 per share (the "SemGroup Common Stock") acquired upon the vesting of performance share units whose performance targets were deemed achieved at target level and settled with SemGroup Common Stock prior to the effective time of the merger (the "Effective Time") contemplated by the Agreement and Plan of Merger (the "Merger Agreement"), dated as of September 15, 2019, by and among SemGroup Corporation ("SemGroup"), Energy Transfer LP ("Energy Transfer"), and Nautilus Merger Sub LLC ("Merger Sub").	
(2) 	Pursuant to the Merger Agreement, on December 5, 2019, Merger Sub merged with and into SemGroup (the "Merger"), with SemGroup surviving the Merger as a direct wholly owned subsidiary of Energy Transfer. Each outstanding share of SemGroup Common Stock held by the Reporting Person immediately prior to the Effective Time automatically converted into 0.7275 common units representing limited partner interests in Energy Transfer (the "Exchange").	
(3) 	As a result of the Exchange, the Reporting Person no longer owns, directly or indirectly, any shares of SemGroup Common Stock.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
REVERE SHAUN M
6120 SOUTH YALE AVE.
SUITE 1500
TULSA, OK 74136			EVP US Commercial		

Signatures		
William Gault, Power of Attorney for Shaun Revere		12/5/2019	
**Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.	
*	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).	
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.