Company: DTK
Filing Date: 2025-09-10
Form Type: 424B2
Source: 0001193125-25-199964
Chunk: 8

Company: DTE ENERGY CO
Filing Date: 2025-09-10
Form: 424B2
Chunk 8
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 the accompanying prospectus under “Description of Debt Securities.” The following summary is qualified in its entirety by reference to the terms and provisions of the notes and the indenture, which are incorporated in this prospectus supplement and the accompanying prospectus by reference. Capitalized terms not otherwise defined in this section, or in the accompanying prospectus, have the meanings given to them in the notes and in the indenture.

General

We will issue the 2023 Series C
notes as additional notes under the indenture pursuant to which we previously issued the initial 2023 Series C notes. The 2023 Series C notes offered by this prospectus supplement and the initial 2023 Series C notes will be treated as a single
series of debt securities under the indenture, including for the purposes of determining whether the required percentage of holders of 2023 Series C 4.875% Senior Notes due 2028 have given their approval or consent to an amendment or waiver or
joined in directing the trustee to take certain actions on behalf of all holders of 2023 Series C 4.875% Senior Notes due 2028. The 2023 Series C notes offered hereby will have the same CUSIP number as the initial 2023 Series C notes. After the
consummation of this offering, $1,050,000,000 in aggregate principal amount of 2023 Series C 4.875% Senior Notes due 2028 will be outstanding and the 2023 Series C notes offered hereby will represent approximately 23.8% of all 2023 Series C 4.875%
Senior Notes due 2028 issued and outstanding.

We will issue the 2025 Series I notes as a series of our senior unsecured debt securities
under the indenture described in the accompanying prospectus.

The indenture does not limit the amount of senior notes or other debt
securities we may issue under it. As of June 30, 2025, approximately $6.7 billion aggregate principal amount of senior debt securities were issued and outstanding under the indenture.

We may also “reopen” the series of 2025 Series I notes and further reopen the series of 2023 Series C notes to issue additional
notes of such series having the same ranking, interest rate, maturity, and other terms (other than the date of issuance, price to public and, in some circumstances, interest accrual dates) as the notes of such series, without the consent of the
holders of such notes