Form 8-K DTE ENERGY CO For: Sep 01

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September 4, 2026 5:03 PM EDT

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_____________________________

FORM 8-K

_____________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 01, 2026

Commission File Number: 1-11607

DTE Energy Company


Michigan						38-3217752
(State or other jurisdiction of incorporation or organization)						(I.R.S Employer Identification No.)

Registrants address of principal executive offices: One Energy Plaza, Detroit, Michigan 48226-1221

Registrants telephone number, including area code: (313) 235-4000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading Symbol(s)

Name of Exchange on which Registered

Common stock, without par value

DTE

New York Stock Exchange

2017 Series E 5.25% Junior Subordinated Debentures due 2077

DTW

New York Stock Exchange

2020 Series G 4.375% Junior Subordinated Debentures due 2080

DTB

New York Stock Exchange

2021 Series E 4.375% Junior Subordinated Debentures due 2081

DTG

New York Stock Exchange

2025 Series H 6.25% Junior Subordinated Debentures due 2085

DTK

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 under the Securities Act (17 CFR 230.405) or Rule 12b-2 under Exchange Act (17 CFR 240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

On September 1, 2026, David A. Thomas, Director of DTE Energy Company, announced his intent to retire from the Board of Directors effective as of September 3, 2026. Dr. Thomas's decision to retire after 13 years of service is not a result of any disagreement with management or the Board.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned hereunto duly authorized.

September 4, 2026