X0306 4 2015-07-28 0 0001393818 Blackstone Group L.P. BX 0001249319 HILL J TOMILSON C/O THE BLACKSTONE GROUP 345 PARK AVENUE, 15TH FLOOR NEW YORK NY 10154 1 1 0 0 Vice Chairman Common units representing limited partner interests 2015-07-28 4 C 0 200000 0.00 A 1168591 D Common units representing limited partner interests 2015-07-28 5 G 0 E 200000 0.00 D 968591 D Common units representing limited partner interests 991371 I See footnote Common units representing limited partner interests 707071 I See footnote Blackstone Holdings partnership units 2015-07-28 4 C 0 200000 D Common units representing limited partner interests 200000 6148987 D Blackstone Holdings partnership units Common units representing limited partner interests 2683308 2683308 I See footnote Blackstone Holdings partnership units Common units representing limited partner interests 5636348 5636348 I See footnote Pursuant to an exchange agreement, the Reporting Person exchanged 200,000 Blackstone Holdings partnership units for an equal number of common units of The Blackstone Group L.P. The Reporting Person donated 200,000 Blackstone common units to a charitable organization. These units are held by a personal LLC, of which the Reporting Person is a manager. The units are held by a trust LLC, of which the Reporting Person's spouse is the manager. A "Blackstone Holdings partnership" unit collectively refers to one limited partner interest in each of Blackstone Holdings I L.P., Blackstone Holdings II L.P., Blackstone Holdings III L.P., and Blackstone Holdings IV L.P. Subject to the minimum retained ownership requirements and transfer restrictions set forth in the partnership agreements of the Blackstone partnerships, the holder has the rights, exercisable from time to time, to exchange each Blackstone Holdings partnership unit for one common unit of The Blackstone Group L.P. The Blackstone Holdings partnership units have no expiration date and may not be exchanged at any time prior to December 31, 2015 other than pursuant to transactions or programs approved by Blackstone. Such Blackstone Holdings partnership units are held by a limited liability company controlled by the Reporting Person. Such Blackstone Holdings partnership units are held in a trust, for the benefit of the Reporting Person's children, of which the spouse of the Reporting Person is the investment trustee. The Reporting Person disclaims beneficial ownership of the securities reported on this form except to the extent of his pecuniary interest. Tabea Y. Hsi as Attorney-In-Fact 2015-07-30