X0306 4 2019-04-17 0 0001633651 Tallgrass Energy, LP TGE 0001404073 Blackstone Holdings III L.P. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001478809 Blackstone Holdings III GP L.P. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001478815 Blackstone Holdings III GP Management L.L.C. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001393818 Blackstone Group L.P. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001404071 Blackstone Group Management L.L.C. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001070844 SCHWARZMAN STEPHEN A C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 Class A Shares 2019-04-17 4 P 0 1106 24.49 A 275823 I See Footnotes Class A Shares 2019-04-17 4 P 0 1614 24.49 A 402206 I See Footnotes Class A Shares 2019-04-18 4 P 0 51908 24.40 A 327731 I See Footnotes Class A Shares 2019-04-18 4 P 0 75692 24.40 A 477898 I See Footnotes Class A Shares 21751018 I See Footnotes The purchases reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan. These Class A shares representing limited partner interests ("Class A shares") of Tallgrass Energy, LP ("TGE") are owned directly by Prairie Secondary Acquiror LP ("Secondary Acquiror 1"). These Class A shares are owned directly by Prairie Secondary Acquiror E LP ("Secondary Acquiror 2"). These Class A shares are owned directly by Prairie Non-ECI Acquiror LP ("Non-ECI Acquiror"). BIP Holdings Manager L.L.C. is the general partner of each of Secondary Acquiror 1, Secondary Acquiror 2 and Non-ECI Acquiror (the "Acquiror LPs"). Blackstone Infrastructure Associates L.P. is the managing member of BIP Holdings Manager L.L.C. The general partner of Blackstone Infrastructure Associates L.P. is BIA GP L.P. The general partner of BIA GP L.P. is BIA GP L.L.C. The sole member of BIA GP L.L.C. is Blackstone Holdings III L.P. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstone's senior managing directors and controlled by its founder, Stephen A. Schwarzman. Each of the Reporting Persons (other than each of the Acquiror LPs to the extent they directly hold securities reported herein), disclaims beneficial ownership of the securities held by the Acquiror LPs, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than each of the Acquiror LPs to the extent they directly hold securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose. Due to the limitations of the electronic filing system certain Reporting Persons are filing a separate Form 4. Information with respect to each of the Reporting Persons is given solely by such Reporting Person, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $24.41 to $24.50, inclusive. The Reporting Persons undertake to provide to TGE, any security holder of TGE, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price set forth in footnotes 9 through 10 to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions ranging from $24.33 to $24.50, inclusive. BLACKSTONE HOLDINGS III L.P., By: Blackstone Holdings III GP L.P., its general partner, By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 2019-04-19 BLACKSTONE HOLDINGS III GP L.P., By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 2019-04-19 BLACKSTONE HOLDINGS III GP MANAGEMENT L.L.C., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 2019-04-19 THE BLACKSTONE GROUP L.P., By: Blackstone Group Management L.L.C., its general partner, By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 2019-04-19 BLACKSTONE GROUP MANAGEMENT L.L.C., By: /s/ John G. Finley, Name: John G. Finley, Title: Chief Legal Officer 2019-04-19 /s/ Stephen A. Schwarzman 2019-04-19