X0206 3 2015-10-14 0 0001362705 Sanchez Production Partners LP SPP 0001656530 Stonepeak Catarina Holdings LLC 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001656529 Stonepeak Catarina Upper Holdings LLC 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001656528 Stonepeak Infrastructure Fund (Orion AIV) LP 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001656527 Stonepeak Associates LLC 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001656526 Stonepeak GP Holdings LP 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001656525 Stonepeak GP Investors LLC 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001656524 Stonepeak GP Investors Manager LLC 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001550758 Dorrell Michael B. 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 0001550764 Vichie Trent D 717 5TH AVENUE, 25TH FLOOR NEW YORK NY 10022 0 0 1 0 Class B Preferred Units Common Units 19444445 D The Class B Preferred Units (the "Preferred Units") are convertible into Common Units at any time, at the holder's election, and have no expiration date. The Conversion Rate is equal to the quotient of (i) the aggregate purchase price for the Preferred Units plus accrued and unpaid distributions thereon, divided by (ii) the lesser of (a) the purchase price for the Preferred Units and (b) the volume weighted average price for which Common Units are issued by the Issuer during the period beginning on October 14, 2015 and ending on the date on which the Issuer has issued Common Units in exchange for cash in an aggregate amount equal to at least $75 million. The initial Conversion Rate, in effect at the time of filing of this Form 4, is 1:1 (i.e., each one Preferred Unit is convertible into one Common Unit). These Preferred Units are owned directly by Stonepeak Catarina Holdings LLC, and indirectly by Stonepeak Catarina Upper Holdings LLC, Stonepeak Infrastructure Fund (Orion AIV) LP, Stonepeak Associates LLC, Stonepeak GP Holdings LP, Stonepeak GP Investors LLC, Stonepeak GP Investors Manager LLC, Michael Dorrell and Trent Vichie. Stonepeak Catarina Upper Holdings LLC is the managing member of Stonepeak Catarina Holdings LLC. Stonepeak Infrastructure Fund (Orion AIV) LP is the managing member of Stonepeak Catarina Upper Holdings LLC. Stonepeak Associates LLC is the general partner of Stonepeak Infrastructure Fund (Orion AIV) LP. Stonepeak GP Holdings LP is the sole member of Stonepeak Associates LLC. Stonepeak GP Investors LLC is the general partner of Stonepeak GP Holdings LP. Stonepeak GP Investors Manager LLC is the managing member of Stonepeak GP Investors LLC. Each of Michael Dorrell and Trent Vichie serve as a managing member of Stonepeak GP Investors Manager LLC. Each Reporting Person disclaims beneficial ownership of the Preferred Units except to the extent of his or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the Preferred Units for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. Exhibit 99.1: Additional Signatures /s/ Michael Dorrell 2015-10-26 /s/ Trent Vichie 2015-10-26