Company: DTK
Filing Date: 2025-09-10
Form Type: 424B2
Source: 0001193125-25-199964
Chunk: 45

Company: DTE ENERGY CO
Filing Date: 2025-09-10
Form: 424B2
Chunk 45
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 financing, development and construction of new facilities; |

| • |     | additions to working capital; and |

| • |     | repurchase or refinancing of securities. |

The precise amount and timing of the application of such proceeds will depend upon our funding requirements, market conditions and the availability and cost of other funds. Pending the application of proceeds, we may also invest the funds temporarily in short-term investment grade securities. 7

THE SECURITIES THAT WE MAY OFFER The descriptions of the securities contained in this prospectus, together with the applicable prospectus supplements, summarize certain terms and provisions of the various types of securities that DTE Energy may offer. The particular terms of the securities offered by any prospectus supplement will be described in that prospectus supplement. If indicated in the applicable prospectus supplement, the terms of the securities may differ from the terms summarized below. The prospectus supplement will also contain information, where applicable, about material U.S. federal income tax considerations relating to the securities, and any securities exchange on which the securities may be listed. We may sell from time to time, in one or more offerings:

| • |     | common stock; |

| • |     | senior debt securities and/or subordinated debt securities, including debt securities convertible into common 
 stock of DTE Energy or exchangeable for other securities;                                                     |

| • |     | stock purchase contracts; and |

| • |     | stock purchase units. |

In this prospectus, we refer to the common stock, senior debt securities, subordinated debt securities, stock purchase contracts and stock purchase units together as “securities.” We refer to the senior debt securities and the subordinated debt securities together as the “debt securities.” 8

DESCRIPTION OF CAPITAL STOCK

Authorized Capital Stock

The authorized
capital stock of DTE Energy currently consists of 400,000,000 shares of DTE Energy common stock, without par value, and 5,000,000 shares of preferred stock, without par value. As of December 31, 2024, there were 207,171,582 shares of
DTE Energy common stock issued and outstanding. All outstanding shares of common stock are, and the common stock offered hereby when issued and paid for will be, duly authorized, validly issued, fully paid and nonassessable. As of December 31,
2024, there were no shares of preferred stock issued and outstanding.

Under the DTE Energy amended and restated articles of
incorporation, which