Blackstone Infrastructure Advisors L.L.C. New York, NY 10154 Attention: John G. Finley Email: john.finley@blackstone.com Ladies and Gentlemen:Kelso GP VIII, LLC • March 13th, 2019 • Natural gas transmission • Delaware
Reference is made to that certain Purchase Agreement (“Purchase Agreement”), dated as of January 30, 2019, by and among Tallgrass Energy Holdings, LLC, a Delaware limited liability company (“Holdings”), the other sellers named therein (together with Holdings, each a “Seller” and collectively, the “Sellers”), Prairie GP Acquiror LLC, a Delaware limited liability company (“GP Acquiror”), Prairie ECI Acquiror LP, a Delaware limited partnership (“Up-C Acquiror 1”), Prairie VCOC Acquiror LP, a Delaware limited partnership (“Up-C Acquiror 2” and, together with Up-C Acquiror 1, “Up-C Acquirors”), and Prairie Non-ECI Acquiror LP, a Delaware limited partnership (“Class A Acquiror” and, together with GP Acquiror and Up-C Acquirors, each an “Acquiror” and collectively, the “Acquirors”), and David G. Dehaemers, Jr., John T. Raymond and Frank J. Loverro, in their respective capacities as Seller Representatives (each, a “Seller Representative” and collectively, the “Seller Representatives”). Each ca
