Company: DTK
Filing Date: 2025-09-10
Form Type: 424B2
Source: 0001193125-25-199964
Chunk: 12

Company: DTE ENERGY CO
Filing Date: 2025-09-10
Form: 424B2
Chunk 12
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 and unpaid interest thereon to the redemption date. On or after the 2025 Series I Par Call Date, we may redeem the 2025 Series I notes, in whole or in part, at any time and from time to time, at a redemption price equal to 100% of the principal amount of the 2025 Series I notes being redeemed plus accrued and unpaid interest thereon to the redemption date. “ Par Call Date” means the 2023 Series C Par Call Date with respect to the 2023 Series C notes and the 2025 Series I Par Call Date with respect to the 2025 Series I notes. “ Treasury Rate” means, with respect to any redemption date, the yield determined by us in accordance with the following two paragraphs. The Treasury Rate shall be determined by us after 4:15 p.m., New York City time (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily)—H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities–Treasury constant maturities–Nominal” (or any successor caption or heading) (“H.15 TCM”). In determining the Treasury Rate, we shall select, as applicable:

| (1) | the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to 
 the Par Call Date (the “Remaining Life”); or                                                                 |

| (2) | if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields                                                                                                                                   
 – one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life – and shall interpolate to the 
 Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or                                                                                               |

| (3) | if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the 
 yield for the single Treasury constant maturity on H.15 closest to the Remaining Life.