SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* SemGroup Corp (Last) (First) (Middle) 6120 S. YALE AVE., STE. 700 (Street) TULSA OK 74136-4216 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Rose Rock Midstream, L.P. [ RRMS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 12/14/2011
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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. 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 Units representing limited partner interests	12/14/2011		A		339,709	A	(2)(3)	339,709	I	See footnotes(1)(2)

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 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: 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
Subordinated Units representing limited partner interests	$0	12/14/2011		A		8,389,709		(4)	(4)	Common Units representing limited partner interests	8,389,709	(2)(3)	8,389,709	I	See footnotes(1)(2)

1. Name and Address of Reporting Person* SemGroup Corp (Last) (First) (Middle) 6120 S. YALE AVE., STE. 700 (Street) TULSA OK 74136-4216 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Rose Rock Midstream Holdings, LLC (Last) (First) (Middle) 6120 S. YALE AVE., STE. 700 (Street) TULSA OK 74136-4216 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Rose Rock Midstream Corp (Last) (First) (Middle) 6120 S. YALE AVE., STE. 700 (Street) TULSA OK 74136-4216 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. This Form 4 is being filed jointly by SemGroup Corporation ("SemGroup"), Rose Rock Midstream Holdings, LLC ("Holdings") and Rose Rock Midstream Corporation ("RRMC"). SemGroup directly owns 100% of the outstanding membership interests of Holdings. Holdings directly owns 100% of the issued and outstanding shares of common stock of RRMC. SemGroup may therefore be deemed to beneficially own securities of the Issuer owned directly by Holdings and RRMC and Holdings may therefore be deemed to beneficially own securities of the Issuer owned directly by RRMC.

2. In connection with the closing of the initial public offering of the Issuer (the "Offering"), (i) Holdings exchanged its 97.0% limited partner interest in the Issuer for 168,491 common units representing limited partner interests in the Issuer ("Common Units"), 8,389,709 subordinated units representing limited partner interests in the Issuer ("Subordinated Units") and the right to receive additional Common Units as described in footnote 3 (or cash in lieu thereof), and (ii) RRMC exchanged its 1.0% limited partner interest in the Issuer for 171,218 Common Units.

3. In connection with the Offering, the Issuer granted the underwriters a 30-day option to purchase up to an additional 1,050,000 Common Units, which will be issued to such underwriters upon the exercise of such option, if any. Upon the earlier to occur of the expiration of the over-allotment option period or the exercise of the over-allotment option in full, Holdings will be issued a number of additional Common Units equal to the excess, if any, of (x) 1,050,000 over (y) the aggregate number of Common Units, if any, actually purchased by the underwriters pursuant to the exercise of the over-allotment option.

4. The Subordinated Units have no expiration date and will convert into Common Units on a one-for-one basis at the end of the subordination period described in the Issuer's Registration Statement on Form S-1 (File No. 333-176260).

	Candice L. Cheeseman, Secretary and General Counsel of SemGroup Corporation	12/16/2011
	Candice L. Cheeseman, Secretary and General Counsel of Rose Rock Midstream Holdings, LLC	12/16/2011
	Candice L. Cheeseman, Secretary and General Counsel of Rose Rock Midstream Corporation	12/16/2011
	** 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 Number.