Statement of Changes in Beneficial Ownership (4)

FORM 4 ☐ Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * GSO Altus Holdings LP	2. Issuer Name and Ticker or Trading Symbol Altus Power, Inc. [ AMPS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                    __X__ 10% Owner _____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle) C/O BLACKSTONE ALTERNATIVE CREDIT, ADVISORS LP, 345 PARK AVENUE	3. Date of Earliest Transaction (MM/DD/YYYY) 6/14/2023
(Street) NEW YORK, NY 10154	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _ X _ Form filed by More than One Reporting Person
(City)        (State)        (Zip)	Rule 10b5-1(c) Transaction Indication ☐ Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	6/14/2023		P		45000	A	$5.4706 (1)	21116125	I	See footnotes (2)(3)(4)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:
(1)	The price reported in Column 4 is a weighted average price. These shares of Class A common stock, par value $0.0001 per share ("Class A Common Stock") of Altus Power, Inc. (the "Issuer") were purchased in multiple transactions ranging from $5.35 to $5.88, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Class A Common Stock purchased at each separate price in the range set forth in this footnote.
(2)	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. ("Blackstone") is the sole member of Blackstone Holdings I/II GP L.L.C. The sole holder of the Series II preferred stock of Blackstone 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.
(3)	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 (the "Exchange Act"), 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 securities reported herein for purposes of Section 16 of the Exchange Act or for any other purpose.
(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.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GSO Altus Holdings LP C/O BLACKSTONE ALTERNATIVE CREDIT ADVISORS LP, 345 PARK AVENUE NEW YORK, NY 10154		X
GSO Altus Holdings Associates LLC C/O BLACKSTONE ALTERNATIVE CREDIT ADVISORS LP, 345 PARK AVENUE NEW YORK, NY 10154		X
GSO Holdings I LLC C/O BLACKSTONE ALTERNATIVE CREDIT ADVISORS LP, 345 PARK AVENUE NEW YORK, NY 10154		X
Blackstone Holdings II L.P. C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK, NY 10154		X
Blackstone Holdings I/II GP L.L.C. C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK, NY 10154		X
Blackstone Inc. 345 PARK AVENUE NEW YORK, NY 10154		X
Blackstone Group Management L.L.C. C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK, NY 10154		X
SCHWARZMAN STEPHEN A C/O BLACKSTONE INC. 345 PARK AVENUE NEW YORK, NY 10154		X

Signatures
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		6/16/2023
**Signature of Reporting Person		Date
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		6/16/2023
**Signature of Reporting Person		Date
GSO HOLDINGS I L.L.C., By: /s/ Marisa Beeney, Name: Marisa Beeney, Title: Authorized Signatory		6/16/2023
**Signature of Reporting Person		Date
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		6/16/2023
**Signature of Reporting Person		Date
BLACKSTONE HOLDINGS I/II GP L.L.C., By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director		6/16/2023
**Signature of Reporting Person		Date
BLACKSTONE INC., By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director		6/16/2023
**Signature of Reporting Person		Date
BLACKSTONE GROUP MANAGEMENT L.L.C., By: /s/ Tabea Hsi, Name: Tabea Hsi, Title: Senior Managing Director		6/16/2023
**Signature of Reporting Person		Date
/s/ Stephen A. Schwarzman		6/16/2023
**Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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