Company: DTK
Filing Date: 2025-09-09
Form Type: 424B5
Source: 0001193125-25-198859
Chunk: 31

Company: DTE ENERGY CO
Filing Date: 2025-09-09
Form: 424B5
Chunk 31
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 reject any order in whole or in part. The underwriters propose to offer the notes directly to the public at the applicable public offering price on the cover page of this prospectus supplement and may offer the notes to certain broker-dealers at that price less a selling concession of % of the principal amount per 2023 Series C note and % of the principal amount per 2025 Series I note. The underwriters and certain broker-dealers may allow a discount of % of the principal amount per 2023 Series C note and % of the principal amount per 2025 Series I note on sales to other broker-dealers. After the initial offering of the notes to the public, the public offering price and such commissions and concessions may be changed by the underwriters. We estimate that our total out-of-pocketexpenses for this offering, excluding the underwriting discount, will be approximately $ million. The 2023 Series C notes will form a single series with the initial 2023 Series C notes, which have a limited trading market. The 2025 Series I notes are a new issue of securities with no established trading market. The notes will not be listed on any securities exchange or any automated dealer quotation system. One or more of the underwriters intends to make a secondary market for the notes. However, they are not obligated to do so and may discontinue making a secondary market for the notes at any time without notice. No assurance can be given as to how liquid the trading market for the notes will be. In connection with the offering, the underwriters may engage in stabilizing transactions, over-allotment transactions, syndicate covering transactions and penalty bids in accordance with Regulation M under the Exchange Act.

| • |     | Stabilizing transactions permit bids to purchase the underlying security so long as the stabilizing bids do not 
 exceed a specified maximum.                                                                                     |

| • |     | Over-allotment transactions involve sales by the underwriters of notes in excess of the principal amount of the 
 notes the underwriters are obligated to purchase, which creates a syndicate short position.                     |

S-23

| • |     | Syndicate covering transactions involve purchases of the notes in the open market after the distribution has been                                                                                                                                
 completed in order to cover syndicate short positions. A short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of the notes in the open market after pricing that could 
 adversely affect investors who purchase in the offering.                                                                                                                                                                                         |

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