CONSUMERS ENERGY CO

2027 PROXY STATEMENT INFORMATION

Under SEC rules, if a shareholder wishes to submit a proposal for possible inclusion in our 2027 Proxy Statement pursuant to Rule 14a-8 of the Exchange Act, we must receive it on or before November 26, 2026.

CMS' and Consumers' Bylaws provide that in order for a shareholder to propose business or nominate persons for election to the Board at an annual meeting that will not be included in the proxy statement for that annual meeting, written notice containing the information required by our Bylaws must be delivered to the Corporate Secretary no later than 60 days nor earlier than 90 days before the anniversary of the prior year’s annual meeting, that is, not earlier than February 7, 2027 but no later than March 9, 2027 for the 2027 Annual Meeting. Any matter must comply with our Bylaws.

In addition, to comply with the universal proxy rules, shareholders who intend to solicit proxies in support of Director nominees other than CMS' and Consumers’ nominees must provide notice that sets forth the information required by Rule 14a-19 under the Exchange Act no later than March 9, 2027.

CMS' Bylaws also permit a shareholder, or a group of up to 20 shareholders, who have owned continuously for at least three years a significant amount of the outstanding shares of CMS common stock (at least three percent) to submit Director nominees (not greater than two or 20% of the Board) for inclusion in its proxy statement if the shareholder(s) and the nominee(s) satisfy the requirements in CMS' Bylaws. Notice of proxy access Director nominees must be received by CMS' Corporate Secretary no less than 120 days nor more than 150 days prior to the anniversary of the date the Corporation mailed its proxy statement for the prior year’s annual meeting, that is after October 27, 2026 but no later than November 26, 2026 for the 2027 Annual Meeting.

Shareholder proposals and nominations should be addressed to: Corporate Secretary, One Energy Plaza, Jackson, Michigan 49201.