SEC FORM 3

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^*

SUMMIT MIDSTREAM PARTNERS HOLDINGS, LLC

(Last)

(First)

(Middle)

C/O SUMMIT MIDSTREAM PARTNERS LP

2100 MCKINNEY AVENUE, SUITE 1250

(Street)

DALLAS

75201

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/26/2013

3. Issuer Name and Ticker or Trading Symbol
Summit Midstream Partners, LP [ SMLP ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

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 Units (Limited Partner Interests)	10,029,850	D⁽¹⁾⁽²⁾

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Subordinated Units (Limited Partner Interests)	⁽³⁾	⁽³⁾	Common Units	24,409,850	$0	D

Explanation of Responses:

1. On March 26, 2013, Summit Midstream Partners, LLC ("Summit") contributed the common and subordinated units reported herein to the Reporting Person in exchange for a continuing 100% interest in the Reporting Person. Summit is the sole member of the Reporting Person and as such, may be deemed to continue to have beneficial ownership of the common and subordinated units reported herein, with the only change being in the form of ownership from direct to indirect.

2. In connection with the aforementioned transfer of units, Summit also transferred its 2% general partnership interest in the Issuer to the Reporting Person. Accordingly, the Reporting Person may be deemed to indirectly beneficially own the securities of the Issuer held by the general partner of the Issuer, but disclaims beneficial ownership except to the extent of its pecuniary interest therein. As sole owner of the general partner, the Reporting Person has the right to appoint the entire board of directors of our general partner, which together with the executive officers of the general partner manage and operate the Issuer.

3. Each subordinated unit will convert into one common unit at the end of the subordination period described in the Issuer's Registration Statement on Form S-1 (Registration No. 333-183466).

	/s/ Brock M. Degeyter, Senior Vice President, General Counsel and Secretary of Summit Midstream Partners Holdings, LLC	04/01/2013
	** 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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