Company: DTK
Filing Date: 2025-03-13
Form Type: DEFA14A
Source: 0000936340-25-000084
Chunk: 2

Company: DTE ENERGY CO
Filing Date: 2025-03-13
Form: DEFA14A
Chunk 2
---
 meeting.

Shareholders may vote on any other matter that properly comes before the meeting.

### THIS IS NOT A FORM FOR VOTING
<div align='center'>You may immediately vote your proxy on the Internet at:</div>

#### www.proxypush.com/dte
Use the Internet to vote your proxy 24 hours a day, 7 days a week. For DTE Energy Savings Plan participants, Internet voting is available through 11:59 p.m. (EDT) on May 5, 2025.

• Please have this Notice available. Follow the instructions to vote your proxy.

Your Internet vote authorizes the Named Proxies to vote your shares in the same manner as if you marked, signed and returned your proxy card.

<div align='center'>To request paper copies of the proxy materials, which include the proxy card,

proxy statement and annual report, please contact us via:</div>

:

#### Internet/Mobile
- Access the Internet and go to www.investorelections.com/dte . Follow the instructions

to log in, and order copies.

(

#### Telephone
- Call us free of charge at 866-870-3684 in the U.S. or Canada, using a touch-tone phone,

and follow the instructions to log in and order copies.

*

#### E-Mail
- Send us an e-mail at paper@investorelections.com with “DTE Materials Request” in the subject line.

The e-mail must include:

• The 11-digit control 

# located in the box in the upper right hand corner on the front of this notice.
• Your preference to receive printed materials via mail

#### -or-
to receive an e-mail with links to the electronic materials.

• If you choose e-mail delivery you must include the e-mail address.

• If you would like this election to apply to delivery of material for all future meetings, write the word “Permanent” and include the last 4 digits of your Social Security Number or Tax Identification Number in the e-mail.

To facilitate timely delivery, all requests for a paper copy of the proxy materials must be received by April 24, 2025.

If you do not make this request, you will not receive a paper copy.

<div align='center'>Important Information about the Notice of Proxy Materials</div>

This notice regarding the online availability of proxy materials (Notice) is provided to certain shareholders in place of the printed materials for the upcoming Annual Meeting of Shareholders.

In 2007, the Securities and Exchange Commission adopted a