Company: DTK
Filing Date: 2025-03-13
Form Type: DEFA14A
Source: 0000936340-25-000084
Chunk: 1

Company: DTE ENERGY CO
Filing Date: 2025-03-13
Form: DEFA14A
Chunk 1
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 contained in the proxy materials before voting.

The Company’s 2025 proxy statement and Annual Report on Form 10-K are available to view at www.proxydocs.com/dte .

If you want to receive a paper copy or an e-mail with links to the electronic materials, you must request one. There is no charge to you for requesting a copy. Please see the reverse side of this notice on how to receive a paper copy.

#### Admission
To register for the virtual meeting along with voting your shares, please follow the instructions below:

• Visit www.proxydocs.com/dte on your smartphone, tablet or computer.

• As a shareholder, you will then be required to enter your control number which is located above.

• After registering, you will receive a confirmation e-mail and an e-mail approximately 1 hour prior to the start of the meeting to the e-mail address you provided during registration with a unique link to the virtual meeting.

<div align='center'>Matters to be acted upon at the meeting are listed below:

The Board of Directors Recommends a Vote FOR Proposals 1, 2, 3 and 4, and AGAINST Proposal 5.</div>

Proposal 1: Elect twelve members of the Board of Directors for one-year terms ending in 2026.

| 01 |     | Nicholas K. Akins       |     | 05 |     | Gail J. McGovern |     | 09 |     | Robert C. Skaggs, Jr. |
| 02 |     | David A. Brandon        |     | 06 |     | Mark A. Murray   |     | 10 |     | David A. Thomas       |
| 03 |     | Deborah L. Byers        |     | 07 |     | Gerardo Norcia   |     | 11 |     | Gary H. Torgow        |
| 04 |     | Charles G. McClure, Jr. |     | 08 |     | Cassandra Santos |     | 12 |     | Valerie M. Williams   |

Proposal 2: Ratify the appointment of PricewaterhouseCoopers LLP as our independent auditors.

Proposal 3: Provide a nonbinding vote to approve the Company’s executive compensation.

Proposal 4: Vote to approve the DTE Energy Company 2025 Long-Term Incentive Plan.

Proposal 5: Vote on a shareholder proposal, if properly presented, relating to elimination of the holding period for shares required to call a special shareholder