CMS: 10-Q financial filing

cms-20260930 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _____to_____ Commission File No. Registrant; State of Incorporation; Address; and Telephone Number IRS Employer Identification No. 1-9513 CMS ENERGY CORPORATION 38-2726431 (A Michigan Corporation) One Energy Plaza , Jackson , Michigan 49201 ( 517 ) 788-0550 1-5611 CONSUMERS ENERGY COMPANY 38-0442310 (A Michigan Corporation) One Energy Plaza , Jackson , Michigan 49201 ( 517 ) 788-0550 Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered CMS Energy Corporation Common Stock , $0.01 par value CMS New York Stock Exchange CMS Energy Corporation 5.625% Junior Subordinated Notes due 2078 CMSA New York Stock Exchange CMS Energy Corporation 5.875% Junior Subordinated Notes due 2078 CMSC New York Stock Exchange CMS Energy Corporation 5.875% Junior Subordinated Notes due 2079 CMSD New York Stock Exchange CMS Energy Corporation Depositary Shares , each representing a 1/1,000th interest in a share of 4.200% Cumulative Redeemable Perpetual Preferred Stock, Series C CMS PRC New York Stock Exchange Consumers Energy Company Cumulative Preferred Stock, $100 par value: $4.50 Series CMS-PB New York Stock Exchange Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the re