X0206 3 2021-12-09 0 0001828723 Altus Power, Inc. AMPS 0001896588 GSO Altus Holdings LP C/O BLACKSTONE ALTERNATIVE CREDIT ADVISO 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001896569 GSO Altus Holdings Associates LLC C/O BLACKSTONE ALTERNATIVE CREDIT ADVISO 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001481157 GSO Holdings I LLC C/O BLACKSTONE ALTERNATIVE CREDIT ADVISO 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001484870 Blackstone Holdings II L.P. C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001464695 Blackstone Holdings I/II GP L.L.C. C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001393818 Blackstone Inc 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001404071 Blackstone Group Management L.L.C. C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 0001070844 SCHWARZMAN STEPHEN A C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK NY 10154 0 0 1 0 Class A Common Stock 28825125 I See Footnotes Reflects shares of Class A common stock, par value $0.0001 per share of Altus Power, Inc. held directly by GSO Altus Holdings LP. Such securities were issued in connection with the transactions contemplated by the Business Combination Agreement, dated as of July 12, 2021, by and among CBRE Acquisition Holdings, Inc. ("CBAH"), CBAH Merger Sub I, Inc., CBAH Merger Sub II, LLC, Altus Power America Holdings, LLC, APAM Holdings LLC and Altus Power, Inc., and that certain subscription agreement entered into by and between GSO Altus Holdings LP and CBAH on July 12, 2021. GSO Altus Holdings Associates LLC is the general partner of GSO Altus Holdings LP. GSO Holdings I L.L.C. is the managing member of GSO Altus Holdings Associates LLC. Blackstone Holdings II L.P. is the managing member of GSO Holdings I L.L.C. Blackstone Holdings I/II GP L.L.C., is the general partner of Blackstone Holdings II L.P. Blackstone Inc. is the sole member of Blackstone Holdings I/II GP 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) expressly disclaims beneficial ownership of the equity securities reported herein 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. GSO ALTUS HOLDINGS LP, By: GSO Altus Holdings Associates LLC, its general partner, By: GSO Holdings I L.L.C., its managing member, By: /s/ Marisa Beeney, Name: Marisa Beeney, Title: Authorized Signatory 2021-12-17 GSO ALTUS HOLDINGS ASSOCIATES LLC, By: GSO Holdings I L.L.C., its managing member, By: /s/ Marisa Beeney, Name: Marisa Beeney, Title: Authorized Signatory 2021-12-17 GSO HOLDINGS I L.L.C., By: /s/ Marisa Beeney, Name: Marisa Beeney, Title: Authorized Signatory 2021-12-17 BLACKSTONE HOLDINGS II L.P., By: Blackstone Holdings I/II GP L.L.C., its general partner, By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director 2021-12-17 BLACKSTONE HOLDINGS I/II GP L.L.C., By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director 2021-12-17 BLACKSTONE INC., By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director 2021-12-17 BLACKSTONE GROUP MANAGEMENT L.L.C., By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director 2021-12-17 /s/ Stephen A. Schwarzman 2021-12-17