UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

(Amendment No. 1)

(Mark One)

x      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2016

or

o         TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from         to         

Commission file number: 001-35666

Summit Midstream Partners, LP

(Exact name of registrant as specified in its charter)

(832) 413-4770

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  x  Yes   o  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  x  Yes   o  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). .o  Yes   x  No

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

EXPLANATORY NOTE

The purpose of this Amendment No. 1 to our Quarterly Report on Form 10-Q for the period ended March 30, 2016 (the “Original Filing”), originally filed with the Securities and Exchange Commission (“SEC”) on May 9, 2016, is to correct an error on the signature page of the Original Filing.  Mr. David K. Kimsey erroneously signed the Original Filing in the capacity of our Principal Accounting Officer, and we are filing this amendment to include the signature of Mr. Matthew S. Harrison in his continuing capacity as our Principal Accounting Officer and remove Mr. Kimsey as a signatory.

Controls and Procedures

In connection with the above error, under the direction of our general partner’s Chief Executive Officer and Chief Financial Officer, we re-evaluated our disclosure controls and procedures and internal control over financial reporting and concluded for purposes of the disclosure required by Part I, Item 4 of Form 10-Q that (i) our disclosure controls and procedures were effective at the reasonable assurance level as of June 30, 2016 and (ii) no change in internal control over financial reporting occurred during the quarter ended March 31, 2016, that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

This Amendment No. 1 does not change any of the other information contained in the Original Filing. Other than as specifically set forth herein, this Amendment No. 1 continues to speak as of the date of the Original Filing and we have not updated or amended the disclosures contained therein to reflect events that have occurred since the date of the Original Filing. Accordingly, this Amendment No. 1 should be read in conjunction with our filings made with the SEC subsequent to the date of the Original Filing.

Item 6. Exhibits.

1

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

2