Altus Power, Inc.

Item 1.01. Entry into a Material Definitive Agreement The information set forth in the Explanatory Note of this Current Report on Form 8-K (this “Current Report”) is incorporated by reference into this Item 1.01. On April 16, 2025, APA Generation Holdings, LLC (“APAGH” or the “APAGH Borrower”), a wholly owned subsidiary of the Company, entered into a senior secured credit agreement (the “APAGH Term Loan Facility”) with affiliates of Goldman Sachs Asset Management as “Lenders.” The total commitments under the credit agreement are (i) $200.0 million in initial term loans and (ii) $100.0 million in delayed draw term loans. Subject to certain conditions, the Company can also request the funding of additional incremental term loans in an amount not to exceed $200.0 million (less the amount of delayed draw loan commitments and any funded delayed draw term loans) over the term of the credit agreement. Subject to certain exceptions, the APAGH Borrower’s obligations to the Lenders are secured by the assets of the APAGH Borrower, its parent, Altus Power, LLC and the Company and are further guaranteed by Altus Power, LLC and the Company. Interest accrues on any outstanding balance at an initial fixed rate equal to 8.50%, subject to adjustments. The maturity date of the APAGH Term Loan Facility is April 16, 2031. On April 16, 2025, APA Generation, LLC, a wholly owned subsidiary of the Company, amended its revolving credit facility with Citibank, N.A. with a total committed capacity of $200.0 million (the “APAG Revolver”), including to extend the maturity thereof. Outstanding amounts under the APAG Revolver have a variable interest rate based on a base rate and an applicable margin. The APAG Revolver is secured by membership interests in the Company’s subsidiaries. The amended APAG Revolver matures on April 16, 2030.

Item 1.02. Termination of Material Definitive Agreements. The information provided in the Explanatory Note of this Current Report is incorporated herein by reference. In connection with entering into the APAGH Term Loan, the existing credit agreement among APAGH, an affiliate of Goldman Sachs Asset Management and CPPIB Credit Investments III Inc., dated as of December 27, 2023 (as amended), was repaid in full and terminated. In accordance with the terms of the Merger Agreement, immediately prior to the Effective Time, each of the following equity compensation plans of the Company was terminated: (i) the Altus Power, Inc. 2021 Employee Stock Purchase Plan and (ii) the Altus Power, Inc. 2021 Omnibus Incentive Plan.

Item 2.01. Completion of Acquisition or Disposition of Assets. The information provided in the Explanatory Note and Item 3.03, Item 5.01, Item 5.02 and Item 5.03 of this Current Report is incorporated herein by reference. The definitive proxy statement filed by the Company with the U.S. Securities and Exchange Commission (the “SEC”) on March 13, 2025, and the supplemental disclosure to such proxy statement filed by the Company with the SEC on April 2, 2025, contain additional information about the Merger and the other transactions contemplated by the Merger Agreement, including information concerning the interests of directors, executive officers and affiliates of the Company in the Merger. The foregoing description of the Merger Agreement and the Merger is not complete and is subject to and qualified in its entirety by reference to the full text of the Merger Agreement, a copy of which is filed as Exhibit 2.1 to the Company’s Current Report on Form 8-K filed with the SEC on February 6, 2025, and is incorporated herein by reference.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under Item 1.01 of this Current Report is incorporated by reference into this Item 2.03.

Item 3.01. Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. The information provided in the Explanatory Note and Item 2.01 of this Current Report is incorporated herein by reference. On April 16, 2025, in connection with the consummation of the Merger, the Company notified the New York Stock Exchange (“NYSE”) that a certificate of merger was filed with the Secretary of State of the State of Delaware for purposes of consummating the Merger. The Company requested that the NYSE file with the SEC a Notification of Removal from Listing and/or Registration under Section 12(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), on Form 25 in order to effect the delisting of the Class A Common Stock from the NYSE and the deregistration of the Class A Common Stock under Section 12(b). As a result, trading of the Class A Common Stock, which traded under the ticker symbol “AMPS” on the NYSE, was suspended prior to the opening of trading on the NYSE on April 16, 2025. Upon effectiveness of the Form 25, the Company intends to file a Certification and Notice of Termination on Form 15 with the SEC to deregister the Class A Common Stock and suspend the Company’s reporting obligations under Sections 13 and 15(d) of the Exchange Act.

Item 3.03. Material Modification to Rights of Security Holders. The information provided in the Explanatory Note, Item 1.02, Item 2.01, Item 3.01, Item 5.01 and Item 5.03 of this Current Report is incorporated herein by reference. As a result of the Merger, each share of Class A Common Stock that was issued and outstanding as of immediately prior to the Effective Time (except as described in Item 2.01 of this Current Report) was converted, at the Effective Time, into the right to receive the Merger Consideration. Accordingly, at the Effective Time, each holder of Class A Common Stock outstanding immediately prior to the Effective Time ceased to have any rights as a stockholder of the Company (other than the right to receive the Merger Consideration for such shares pursuant to the terms of the Merger Agreement).

Item 5.01. Changes in Control of Registrant. The information provided in the Explanatory Note, Item 1.01, Item 2.01 and Item 5.02 of this Current Report is incorporated herein by reference. As a result of the consummation of the Merger, a change of control of the Company occurred and the Company became a wholly owned subsidiary of Parent.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangement of Certain Officers. The information provided in the Explanatory Note, Item 1.02 and Item 2.01 of this Current Report is incorporated herein by reference. Directors and Officers At the Effective Time, pursuant to the terms of the Merger Agreement, the directors of Merger Sub immediately prior to the Effective Time, Martin Davidson and Joann Harris, continued as the directors of the Surviving Corporation. Gregg J. Felton also continued a director of the Surviving Corporation pursuant to a request made by Parent after the Merger Agreement was executed and delivered. Accordingly, as of the Effective Time, Christine R. Detrick, Robert C. Bernard, Robert M. Horn, Richard N. Peretz, Tina C. Reich and Richard A. Shapiro, resigned and ceased serving on the Company’s board of directors and all of its committees. No director resigned as a result of any disagreement with the Company on any matter relating to the Company’s operations, policies or practices. Also pursuant to the terms of the Merger Agreement, the officers of the Company immediately prior to the Effective Time, including Gregg J. Felton, Anthony Savino and Dustin Weber, continued as the officers of the Surviving Corporation.

Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. The information provided in the Explanatory Note and Item 2.01 of this Current Report is incorporated herein by reference. In accordance with the terms of the Merger Agreement, at the Effective Time, the Company Certificate was amended and restated in its entirety to be in the form of the certificate of incorporation of Merger Sub as in effect immediately prior to the Effective Time and the bylaws of the Company in effect immediately prior to the Effective Time were amended and restated in their entirety to be in the form of the bylaws of Merger Sub immediately prior to the Effective Time, as set forth in Exhibits 3.1 and 3.2 hereto, respectively, which are incorporated by reference into this Item 5.03.

Item 8.01. Other Events. On April 16, 2025, the Company issued a press release announcing the completion of the Merger. A copy of the press release is furnished as Exhibit 99.1 to this Current Report and is incorporated by reference herein.