X0306 4 2016-06-06 0 0001136352 Crestwood Equity Partners LP CEQP 0001477477 First Reserve GP XI, Inc. ONE LAFAYETTE PLACE GREENWICH CT 06830 1 0 1 0 0001477478 First Reserve GP XI, L.P. ONE LAFAYETTE PLACE GREENWICH CT 06830 1 0 1 0 0000908428 MACAULAY WILLIAM E ONE LAFAYETTE PLACE GREENWICH CT 06830 1 0 1 0 0001501490 FR Midstream Holdings LLC ONE LAFAYETTE PLACE GREENWICH CT 06830 1 0 1 0 0001501964 FR XI CMP Holdings LLC ONE LAFAYETTE PLACE GREENWICH CT 06830 1 0 1 0 0001501961 Crestwood Holdings Partners, LLC 700 LOUISIANA STREET, SUITE 2550 HOUSTON TX 77002 1 0 1 0 0001501963 Crestwood Holdings II LLC 700 LOUISIANA STREET, SUITE 2550 HOUSTON TX 77002 1 0 1 0 Common Units 9985462 I See footnotes Common Units 2016-06-06 4 P 0 47923 23.29 A 7484449 I See footnotes Reflects Common Units held directly by Crestwood Gas Services Holdings LLC ("Gas Services Holdings"). Reflects Common Units held directly by Crestwood Holdings LLC ("Crestwood Holdings"). Gas Services Holdings' sole member is Crestwood Holdings, whose sole member is FRCM Co-Investment, whose controlling member is Crestwood Holdings Partners, LLC, whose controlling member is FR XI CMP Holdings LLC, whose sole member is FR Midstream Holdings, whose manager is First Reserve GP XI, L.P., whose general partner is First Reserve GP XI, Inc. ("FR GP Inc."). William E. Macaulay is a director of FR GP Inc. and has the right to appoint a majority of the board of directors of FR GP Inc. Does not include 438,789 Subordinated Units. The Subordinated Units may be converted into Common Units on a one-for-one basis upon the termination of the subordination period as set forth in the Issuer Partnership Agreement. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $22.85 to $23.56, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above. The Reporting Persons disclaim beneficial ownership of the securities reported on this Form 4 except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of these securities for purposes of Section 16 of the Securities Exchange Act of 1934 or for any other purpose. FIRST RESERVE GP XI, INC., By: /s/ Michael France, Name: Michael France, Title: Managing Director 2016-06-07 FIRST RESERVE GP XI, L.P., By: First Reserve GP XI, Inc., its general partner, By: /s/ Michael France, Name: Michael France, Title: Managing Director 2016-06-07 WILLIAM E. MACAULAY, By: /s/ Anne E. Gold, Name: Anne E. Gold, Title: Attorney-in-fact 2016-06-07 FR MIDSTREAM HOLDINGS LLC, By: First Reserve GP XI, L.P., its managing member, By: First Reserve GP XI, Inc., its general partner, By: /s/ Michael France, Name: Michael France, Title: Managing Director 2016-06-07 FR XI CMP HOLDINGS LLC, By: First Reserve GP XI, L.P., its managing member, By: First Reserve GP XI, Inc., its general partner, By: /s/ Michael France, Name: Michael France, Title: Managing Director 2016-06-07 CRESTWOOD HOLDINGS PARTNERS, LLC, By: /s/ Joel C. Lambert, Name: Joel C. Lambert, Title: Senior Vice President 2016-06-07 FR CRESTWOOD MANAGEMENT CO-INVESTMENT LLC, By: /s/ Joel C. Lambert, Name: Joel C. Lambert, Title: Senior Vice President 2016-06-07