# EDGAR Filing Document

**Accession Number:** 0000811156
**File Stem:** 0000811156-26-000017
**Filing Date:** 2026-3
**Character Count:** 2304
**Document Hash:** 8564703c337b056a7e9cc2854d16d21e
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000811156-26-000017.hdr.sgml**: 20260326

**ACCESSION NUMBER**: 0000811156-26-000017

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260326

**DATE AS OF CHANGE**: 20260326

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CMS ENERGY CORP
- **CENTRAL INDEX KEY:** 0000811156
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC & OTHER SERVICES COMBINED [4931]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 382726431
- **STATE OF INCORPORATION:** MI
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-09513
- **FILM NUMBER:** 26794635

**BUSINESS ADDRESS:**
- **STREET 1:** ONE ENERGY PLAZA
- **CITY:** JACKSON
- **STATE:** MI
- **ZIP:** 49201
- **BUSINESS PHONE:** 5177880550

**MAIL ADDRESS:**
- **STREET 1:** ONE ENERGY PLAZA
- **CITY:** JACKSON
- **STATE:** MI
- **ZIP:** 49201

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 14A**

**Proxy Statement Pursuant to Section 14(a) of the Securities** 

**Exchange Act of 1934** 

**(Amendment No.)** 

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| | |
|:---|:---|
| Filed by the Registrant ☒ | Filed by the Registrant ☒ |
| Filed by a Party other than the Registrant ☐ | Filed by a Party other than the Registrant ☐ |
| Check the appropriate box: | Check the appropriate box: |
| &nbsp;&nbsp;&nbsp; ☐ | Preliminary Proxy Statement |
| &nbsp;&nbsp;&nbsp; ☐ | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| &nbsp;&nbsp;&nbsp; ☐ | Definitive Proxy Statement |
| &nbsp;&nbsp;&nbsp; ☒ | Definitive Additional Materials |
| &nbsp;&nbsp;&nbsp; ☐ | Soliciting Material Pursuant to §240.14a-12 |

---

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| |
|:---|
| **CMS ENERGY CORPORATION** |
| (Name of Registrant as Specified In Its Charter) |
| (Name of Person(s) Filing Proxy Statement, if other than the Registrant) |

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Payment of Filing Fee (Check all boxes that apply):

☒ No fee required.

 ☐ Fee paid previously with preliminary materials.

 ☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

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