# CMS ENERGY CORP — DEF 14A

CMS ENERGY CORP of JACKSON, MI filed a DEF 14A with the SEC on 1999-04-15. Industry: Electric & Other Services Combined.

## Filing

- Filed: 1999-04-15
- Form: DEF 14A
- Accession: 0000950124-99-002604
- Registrant: CMS ENERGY CORP
- CIK: 0000811156
- Industry (SIC): Electric & Other Services Combined (4931)
- State of incorporation: MI
- Location: JACKSON, MI

## Filing timeline for this registrant (60)

_Showing 12 of 60 filings._

| Filed | Form |
| --- | --- |
| [2026-04-01](https://search.stillhousedata.com/proxy/0000811156-26-000021) | DEFA14A |
| [2026-03-26](https://search.stillhousedata.com/proxy/0000811156-26-000017) | DEFA14A |
| [2026-03-26](https://search.stillhousedata.com/proxy/0000811156-26-000015) | DEF 14A |
| [2026-03-13](https://search.stillhousedata.com/proxy/0000811156-26-000006) | PRE 14A |
| [2025-04-03](https://search.stillhousedata.com/proxy/0001140361-25-011948) | DEFA14A |
| [2025-03-20](https://search.stillhousedata.com/proxy/0001140361-25-009712) | DEFA14A |
| [2025-03-20](https://search.stillhousedata.com/proxy/0001140361-25-009708) | DEF 14A |
| [2024-03-21](https://search.stillhousedata.com/proxy/0000811156-24-000054) | DEFA14A |
| [2024-03-21](https://search.stillhousedata.com/proxy/0000811156-24-000052) | DEF 14A |
| [2024-03-08](https://search.stillhousedata.com/proxy/0000811156-24-000048) | PRE 14A |
| [2023-03-23](https://search.stillhousedata.com/proxy/0001140361-23-013258) | DEFA14A |
| [2023-03-23](https://search.stillhousedata.com/proxy/0001140361-23-013253) | DEF 14A |

## More

- [CIK 811156 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=811156&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950124-99-002604.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.