Sec Form 4 Filing - CBRE Acquisition Sponsor, LLC @ Altus Power, Inc. - 2023-03-31

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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person CBRE Acquisition Sponsor, LLC 2. Issuer Name and Ticker or Trading Symbol Altus Power, Inc. [ AMPS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CBRE GROUP, INC., 2100 MCKINNEY AVENUE SUITE 1250 3. Date of Earliest Transaction (MM/DD/YY) 03/31/2023 (Street) DALLAS, TX75201 4. If Amendment, Date Original Filed (MM/DD/YY) 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)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction 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 03/31/2023 M( 2 ) 1,811 A 24,556,012 I Held through CBRE Acquisition Sponsor, LLC ( 3 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 Class B Common Stock ( 1 ) 03/31/2023 M( 2 ) 181,125 ( 1 ) ( 1 ) Class A Common Stock 1,811 ( 2 ) $ 0 905,625 I Held through CBRE Acquisition Sponsor, LLC ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other CBRE Acquisition Sponsor, LLC C/O CBRE GROUP, INC. 2100 MCKINNEY AVENUE SUITE 1250 DALLAS, TX75201 X X CBRE SERVICES, INC. C/O CBRE GROUP, INC. 2100 MCKINNEY AVENUE SUITE 1250 DALLAS, TX75201 X X CBRE GROUP, INC. 2100 MCKINNEY AVENUE SUITE 1250 DALLAS, TX75201 X X Signatures CBRE ACQUISITION SPONSOR, LLC, By: /s/ Emma E. Giamartino, Name: Emma E. Giamartino, Title: Chief Financial Officer 04/03/2023 Signature of Reporting Person Date CBRE SERVICES, INC., By: /s/ Emma E. Giamartino, Name: Emma E. Giamartino, Title: Chief Financial Officer 04/03/2023 Signature of Reporting Person Date CBRE GROUP, INC., By: /s/ Emma E. Giamartino, Name: Emma E. Giamartino, Title: Chief Financial Officer 04/03/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the terms of the Class B common stock of the Issuer (the "Class B Common Stock"), of which an aggregate of 1,006,250 shares are currently outstanding, on the last day of each measurement period, which will occur annually over seven fiscal years following the completion of the business combination of CBRE Acquisition Holdings, Inc. with Altus Power, Inc., which occurred on December 9, 2021, an aggregate of 201,250 shares of Class B Common Stock will automatically convert, subject to adjustment, into shares of Class A Common Stock of the Issuer (the "Class A Common Stock"), pursuant to a formula based on the stock price of the Class A Common Stock, into an aggregate minimum of 2,013 shares of Class A Common Stock on each conversion date, up to an aggregate maximum of 14,596,637 shares of Class A Common Stock over such seven year period. ( 2 )On the last day of the measurement period ending on March 31, 2023 and pursuant to the formula referenced above, an aggregate of 201,250 shares of Class B Common Stock automatically converted into an aggregate of 2,013 shares of Class A Common Stock. Such conversion of Class B Common Stock applies to each holder of Class B Common Stock on a pro rata basis on the basis of the amounts of such Class B Common Stock held by such holder. In connection with the above, 181,125 shares of Class B Common Stock beneficially owned by the Reporting Persons were converted into 1,811 shares of Class A Common Stock. ( 3 )Represents securities directly held by CBRE Acquisition Sponsor, LLC ("CBRE Sponsor"). The sole member of CBRE Sponsor is CBRE Services, Inc., which is a wholly-owned subsidiary of CBRE Group, Inc., a publicly traded company.

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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.