SEC Form 3

FORM 3

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

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1. Name and Address of Reporting Person* MINIELLY DAVID M (Last) (First) (Middle) 6120 SOUTH YALE AVE. SUITE 1500 (Street) TULSA OK 74136 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 01/01/2019	3. Issuer Name and Ticker or Trading Symbol SemGroup Corp [ SEMG ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) EVP US Operations	5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	61,072	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	William Gault, Power of Attorney for David Minielly	01/10/2019
	** 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 5 (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.
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Exhibit 24

POWER OF ATTORNEY

The undersigned hereby makes, constitutes and appoints each of Susan S.
Lindberg, Robert N. Fitzgerald and William H. Gault, signing singly, as the
undersigned's true and lawful attorney-in-fact, with full power and authority as
hereinafter described on behalf of and in the name, place and stead of the
undersigned to:
	(1)	prepare, execute, acknowledge in the undersigned's name and on the
undersigned's behalf, and submit to the U.S. Securities and Exchange Commission
(the "SEC") a Form ID, including any amendments thereto, and any other documents
necessary or appropriate to obtain codes and passwords enabling the undersigned
to make electronic filings with the SEC of reports required by Section 16 of the
Securities Exchange Act of 1934 and the rules and regulations promulgated
thereunder, as amended from time to time (the "Exchange Act"), or any rule or
regulation of the SEC;
	(2)	prepare, execute, acknowledge, deliver and file Forms 3, 4 and 5 or such
other forms, including any amendments thereto, as may be required by Section 16
of the Exchange Act with respect to the securities of SemGroup Corporation, a
Delaware corporation (the "Company"), with the SEC and the Company;
	(3)	seek or obtain, as the undersigned's representative and on the
undersigned's behalf, information on transactions in the Company's securities
from any third party, including brokers, employee benefit plan administrators
and trustees, and the undersigned hereby authorizes any such person to release
any such information to the undersigned and approves and ratifies any such
release of information; and
	(4)	perform any and all other acts which in the discretion of such
attorney-in-fact are determined to be necessary or desirable for and on behalf
of the undersigned in connection with the foregoing.

The undersigned acknowledges that:
	(1)	this Power of Attorney authorizes, but does not require, each such
attorney-in-fact to act in his or her discretion on information provided to such
attorney-in-fact without independent verification of such information;
	(2)	any documents prepared and/or executed by each such attorney-in-fact on
behalf of the undersigned pursuant to this Power of Attorney will be in such
form and will contain such information and disclosure as such attorney-in-fact,
in his or her discretion, deems necessary or desirable;
	(3)	neither the Company nor such attorneys-in-fact assume(s) (i) any liability
for the undersigned's responsibility to comply with the requirements of the
Exchange Act, (ii) any liability of the undersigned for any failure to comply
with such requirements, or (iii) any obligation or liability of the undersigned
for profit disgorgement under Section 16(b) of the Exchange Act; and
	(4)	this Power of Attorney does not relieve the undersigned from responsibility
for compliance with the undersigned's obligations under the Exchange Act,
including without limitation the reporting requirements under Section 16 of the
Exchange Act.

The undersigned hereby gives and grants to each such attorney-in-fact full power
and authority to do and perform all and every act and thing whatsoever
requisite, necessary or appropriate to be done in and about the foregoing
matters as fully to all intents and purposes as the undersigned might or could
do if present, hereby ratifying all that such attorney-in-fact of, for and on
behalf of the undersigned, shall lawfully do or cause to be done by virtue of
this Power of Attorney.
This Power of Attorney shall remain in full force and effect until revoked by
the undersigned in a signed writing delivered to such attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 20th day of December, 2018.

/s/ David Minielly
David Minielly


STATE OF OKLAHOMA	)
			) ss.
COUNTY OF TULSA		)

On this 20th day of December, in the year 2018, before me, the undersigned, a
Notary Public in and for said state, personally appeared David Minielly,
personally known to me or proved to me on the basis of satisfactory evidence to
be the person whose name is subscribed to the within instrument and acknowledged
to me that he/she executed the same in his/her capacity, and that by his/her
signature on the instrument, the person or the entity upon behalf of which the
person acted, executed the instrument.

(SEAL)

						/s/ Elayna M. Conner
						Notary Public

						My Commission Expires: 2/22/2022