X0609 4 2026-05-15 0002100161 Blackstone Digital Infrastructure Trust Inc. BXDC 0001717275 Blackstone Treasury Holdings III L.L.C. false C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 false false true false 0001404073 Blackstone Holdings III L.P. false C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 false false true false 0001478809 Blackstone Holdings III GP L.P. false C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 false false true false 0001478815 Blackstone Holdings III GP Management L.L.C. false C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 false false true false 0001393818 Blackstone Inc. false 345 PARK AVENUE NEW YORK NY 10154 false false true false 0001404071 Blackstone Group Management L.L.C. false C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 false false true false 0001070844 SCHWARZMAN STEPHEN A false C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 false false true false false Common Stock 2026-05-15 4 P false 375000 20 A 375000 I See footnotes Common Stock 2026-05-15 4 P false 9111795 20 A 9111800 I See footnotes Reflects shares of common stock, par value $0.01 ("Common Stock") acquired in a directed share program in connection with the Issuer's initial public offering. Reflects Common Stock of the Issuer directly held by Stephen A. Schwarzman. Reflects Common Stock of the Issuer directly held by Blackstone Treasury Holdings III L.L.C. Blackstone Holdings III L.P. is the managing member of Blackstone Treasury Holdings III L.L.C. Blackstone Holdings III GP L.P. is the general partner of Blackstone Holdings III L.P. Blackstone Holdings III GP Management L.L.C. is the general partner of Blackstone Holdings III GP L.P. Blackstone Inc. is the sole member of Blackstone Holdings III GP Management L.L.C. The sole holder of the Series II preferred stock of Blackstone Inc. 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 to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, 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 to the extent it directly holds 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. 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. Blackstone Treasury Holdings III L.L.C., By: /s/ Joseph Rocco, Name: Joseph Rocco, Title: Managing Director - Treasurer 2026-05-19 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/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary 2026-05-19 Blackstone Holdings III GP L.P., By: Blackstone Holdings III GP Management L.L.C., its general partner, By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary 2026-05-19 Blackstone Holdings III GP Management L.L.C., By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary 2026-05-19 Blackstone Inc., By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary 2026-05-19 Blackstone Group Management L.L.C., By: /s/ Victoria Portnoy, Name: Victoria Portnoy, Title: Managing Director - Assistant Secretary 2026-05-19 Stephen A. Schwarzman, By: /s/ Stephen A. Schwarzman 2026-05-19