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*
Szydlowski Norman J	

(Last)	(First)	(Middle)	
TWO WARREN PLACE	
6120 SOUTH YALE AVENUE, SUITE 700	

(Street) 
TULSA	OK	74136-4216	

(City)	(State)	(Zip)	
	2. Date of Event Requiring Statement (Month/Day/Year)
11/09/2010 	3. Issuer Name and Ticker or Trading Symbol 
SemGroup Corp [ SEMG ] 		
		4. Relationship of Reporting Person(s) to Issuer 
(Check all applicable) 
X	Director		10% Owner	
X	Officer (give title below)		Other (specify below)	
President and CEO	
	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	94,800	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:	
Exhibit 24 - Power of Attorney	
	Candice L. Cheeseman, Power of Attorney for Norman J. Szydlowski	11/09/2010	
	** 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.	
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 Number.	
POWER OF ATTORNEY
The undersigned hereby makes, constitutes and appoints each of Candice 
L. Cheeseman, 
Robert N. Fitzgerald and Deborah S. Fleming, 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 17th day of September, 2010.

;/s/ Norman J. Szydlowski
Norman J. Szydlowski
STATE OF OKLAHOMA)
) ss.
COUNTY OF TULSA)
On this 17th day of September, in the year 2010, before me, the undersigned, 
a Notary Public in 
and for said state, personally appeared Norman J. Szydlowski, 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.
/s/ Elayna M. Conner
Notary Public
(SEAL)
My Commission Expire
s: 2/22/2014