Item 4.01 Changes in Registrant's Certifying Accountant
On July 23, 2026, the Board of Directors (the "Board") of The Dayton Power and Light Company, doing business as AES Ohio (the "Company"), a subsidiary of The AES Corporation ("AES"), dismissed Ernst & Young LLP ("EY") as the Company's independent registered public accounting firm, due to the fact that EY will no longer be considered independent with respect to AES and its subsidiaries under the rules of the Securities and Exchange Commission (the "SEC") after the closing of the announced Agreement and Plan of Merger (the "Merger Agreement"), by and among AES, Horizon Parent, L.P., a Delaware limited partnership ("Parent"), and Horizon Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Parent ("Merger Sub"). Pursuant to the Merger Agreement, on the terms and subject to the conditions set forth therein, Merger Sub will merge with and into AES (the "Merger"), with AES continuing as the surviving corporation in the Merger. Parent is jointly controlled by investment vehicles affiliated with one or more funds, accounts or other entities managed or advised by Global Infrastructure Management, LLC and the EQT Infrastructure VI fund. The dismissal is effective upon the filing of the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026.
The audit reports of EY on the Company's financial statements as of and for the fiscal years ended December 31, 2024 and 2025 did not contain an adverse opinion or a disclaimer of opinion, nor were such reports qualified or modified as to uncertainty, audit scope or accounting principles. During the fiscal years ended December 31, 2024 and 2025, and the subsequent interim period through the date of this Current Report on Form 8- K (this "Current Report"), there were no (i) disagreements (within the meaning of Item 304(a)(1)(iv) of Regulation S-K and the related instructions under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) between the Company and EY on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which, if not resolved to the satisfaction of EY, would have caused EY to make reference to the subject matter of the disagreement in connection with its report on the financial statements of the Company for the applicable year, or (ii) reportable events (within the meaning of Item 304(a)(1)(v) of Regulation S-K and the related instructions under the Exchange Act). The Company has provided EY with a copy of the disclosures in this Current Report and has requested that EY provide the Company with a letter addressed to the SEC stating whether EY agrees with the statements made by the Company herein. A copy of EY's letter, dated July 27, 2026, is filed as Exhibit 16.1 to this Current Report.
Following consideration of multiple accounting firms, on July 23, 2026, the Board engaged KPMG LLP ("KPMG") as the independent registered public accounting firm for the Company for the fiscal year ending December 31, 2026, effective with EY's dismissal upon the filing of the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026.