X0306 4 2015-07-09 0 0001393818 Blackstone Group L.P. BX 0001082206 LAZARUS ROCHELLE B 345 PARK AVENUE NEW YORK NY 10154 1 0 0 0 Common units representing limited partner interests 2015-07-09 4 A 0 3837 0.00 A 24415 D Common units representing limited partner interests 2950 I See footnote Granted under the 2007 Equity Incentive Plan, these deferred restricted units will vest, and the underlying common units will be delivered, on July 9, 2016 subject to the Reporting Person's continued service on the board of directors of Blackstone Group Management L.L.C., the general partner of The Blackstone Group L.P. These units are held in trusts for the benefit of the Reporting Person's children, over which the Reporting Person shares investment control. The Reporting Person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest. Tabea Y. Hsi as Attorney-In-Fact 2015-07-13