X0306 4 2012-10-03 0 0001549922 Summit Midstream Partners, LP SMLP 0001371946 Graves Brad N C/O SUMMIT MIDSTREAM PARTNERS, LP 2100 MCKINNEY AVENUE, SUITE 1250 DALLAS TX 75201 0 1 0 0 See Remarks Phantom Units 2012-10-03 4 A 0 8750 0 A Common Units 8750 8750 D Each phantom unit is the economic equivalent of one common unit. The phantom units vest on October 3, 2015 (the third anniversary of the consummation of this offering). The Reporting Person will receive distribution equivalent rights for each phantom unit, providing for payment on the vesting date of a lump sum of cash equal to the accrued distributions from and after the grant date of the phantom units. The phantom units do not expire. The phantom units are settled upon vesting in common units (on a one-for-one basis) or in cash, at the discretion of the Issuer. The Reporting Person is Senior Vice President of Corporate Development of Summit Midstream GP, LLC, the general partner of the Issuer (the "General Partner"). The Issuer is managed by the directors and executive officers of the General Partner. /s/ Brock M. Degeyter, Attorney-in-Fact for Brad N. Graves 2012-10-05