Company: DTK
Filing Date: 2025-06-17
Form Type: 11-K
Source: 0000936340-25-000159
Chunk: 5

Company: DTE ENERGY CO
Filing Date: 2025-06-17
Form: 11-K
Chunk 5
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) provides only general information. Participants should refer to the respective Summary Plan Descriptions and the respective Plan documents for a more complete description of each of the Plan's provisions.

#### General
The Plans are voluntary, defined contribution plans covering the employee groups described below.

The SSOP covers regular full-time and part-time employees of DTE Electric Company (DTE Electric), DTE Gas Company (DTE Gas), DTE Enterprises, Inc., DTE Energy Corporate Services, LLC (DTE LLC), affiliates of DTE LLC (Participating Affiliates), Citizens Gas Fuel Company (Citizens Gas), and Midwest Energy Resources Company (MERC) that are not represented by a collective bargaining agreement. The SSOP also covers certain regular full-time and part-time employees of DTE Electric, Citizens Gas, and non-regulated Participating Affiliates who are represented by collective bargaining agreements.

The SSOP has three distinct subdivisions, which originate from the merger of former plans. These subdivisions are generally referred to as the DTE Electric Plan, the MCN Plan, and the Citizens Plan. Participation in the subdivisions may be dependent upon the defined benefit plan in which the employee participates.

DTE LLC is a subsidiary of DTE Energy Company (DTE Energy). DTE LLC, the specific employers listed above, and the Participating Affiliates are otherwise referred to as the “Company” or “Companies.”

The Local 223 Plan covers regular full-time and part-time employees of a Regulated Participating Employer (DTE LLC, DTE Electric, and DTE Gas) represented by Local 223 of the Utility Workers Union of America.

The Local 17 Plan covers regular full-time and part-time employees of the Company represented by Local 17 of the International Brotherhood of Electrical Workers.

The Gas ISOP covers regular full-time and part-time employees of the Company represented by:

• Local #799C Transmission and Storage Operations (T&SO), International Chemical Workers Union Council, United Food and Commercial Workers;

• Local #799C Northern, International Chemical Workers Union Council, United Food and Commercial Workers;

• Local #70C, International Chemical Workers Union Council, United Food and Commercial Workers; or

• Local #132C, International Chemical Workers Union Council, United Food and Commercial Workers

Employees are eligible to participate in the respective Plans as soon as administratively practicable upon hire. The Plans are subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (ERISA).

DTE LLC is the sponsor of the