DTE / DTE Energy Company - SEC-Einreichungen, Jahresbericht, Proxy Statement

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): May 15, 2026 Commission File Numb

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): May 15, 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.)

AGA Financial Forum May 17 - 19, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in

a2026agapresentationfina AGA Financial Forum May 17 - 19, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expec

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): May 15, 2026 Commission File Numb

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): May 15, 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.)

AGA Financial Forum May 17 - 19, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in

a2026agapresentationfina AGA Financial Forum May 17 - 19, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expec

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): May 07, 2026 Commission File Numb

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): May 07, 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.)

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): May 01, 2026 Commission File Numb

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): May 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.)

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three Months Ended March 31, 2026

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three Months Ended March 31, 2026 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6 Consolidated

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2026 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2026 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Mic

***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. CLEAN CAPACITY ACCELERATOR AGREEMENT

Exhibit 10.2 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. CLEAN CAPACITY ACCELERATOR AGREEMENT This Clean Capacity Accelerator Agreement (this “Agreement”) is entered into as of March 12, 2026 (“Contract Date”) by and between DTE El

1Q 2026 Earnings Conference Call April 30, 2026 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements co

q126presentationfinal8k 1Q 2026 Earnings Conference Call April 30, 2026 EXHIBIT 99.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2026 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2026 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Mic

INDENTURE DATED AS OF FEBRUARY 1, 2026 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) A

Exhibit 4.1 INDENTURE DATED AS OF FEBRUARY 1, 2026 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) AS TRUSTEE SUPPLEMENTAL TO MORTGAGE AND DEED OF TRUST DATED AS OF OCTOBER 1, 1924 PROVIDING FOR (A) GENERAL AND REFUNDING MORTGAGE BONDS

1Q 2026 Earnings Conference Call April 30, 2026 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements co

q126presentationfinal8k 1Q 2026 Earnings Conference Call April 30, 2026 EXHIBIT 99.

***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. AMENDED AND RESTATED SCHEDULE DESIGNA

Exhibit 10.1 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. AMENDED AND RESTATED SCHEDULE DESIGNATION D11 PRIMARY SUPPLY AGREEMENT This Amended and Restated Schedule Designation D11 Primary Supply Agreement (this “Agreement”) is enter

DTE Energy reports first quarter 2026 accomplishments, investments and financial results

Exhibit 99.1 DTE Energy reports first quarter 2026 accomplishments, investments and financial results •Secured agreement to power Google’s new data center in Michigan •Continued progress improving reliability and accelerating the transition to cleaner energy generation •Invested $400 million in electric distribution infrastructure to advance reliability improvements for customers •Experienced 60%

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): April 30, 2026 Commission File Nu

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): April 30, 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.

***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. AMENDED AND RESTATED SCHEDULE DESIGNA

Exhibit 10.1 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. AMENDED AND RESTATED SCHEDULE DESIGNATION D11 PRIMARY SUPPLY AGREEMENT This Amended and Restated Schedule Designation D11 Primary Supply Agreement (this “Agreement”) is enter

***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. CLEAN CAPACITY ACCELERATOR AGREEMENT

Exhibit 10.2 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. CLEAN CAPACITY ACCELERATOR AGREEMENT This Clean Capacity Accelerator Agreement (this “Agreement”) is entered into as of March 12, 2026 (“Contract Date”) by and between DTE El

DTE Energy reports first quarter 2026 accomplishments, investments and financial results

Exhibit 99.1 DTE Energy reports first quarter 2026 accomplishments, investments and financial results •Secured agreement to power Google’s new data center in Michigan •Continued progress improving reliability and accelerating the transition to cleaner energy generation •Invested $400 million in electric distribution infrastructure to advance reliability improvements for customers •Experienced 60%

INDENTURE DATED AS OF FEBRUARY 1, 2026 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) A

Exhibit 4.1 INDENTURE DATED AS OF FEBRUARY 1, 2026 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) AS TRUSTEE SUPPLEMENTAL TO MORTGAGE AND DEED OF TRUST DATED AS OF OCTOBER 1, 1924 PROVIDING FOR (A) GENERAL AND REFUNDING MORTGAGE BONDS

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): April 30, 2026 Commission File Nu

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): April 30, 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.

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): March 23, 2026 Commission File Nu

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): March 23, 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.

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): March 23, 2026 Commission File Nu

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): March 23, 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.

Business Update March 24, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this d

presentationfinal8k32326 Business Update March 24, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “ma

Business Update March 24, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this d

presentationfinal8k32326 Business Update March 24, 2026 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “ma

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): March 16, 2026 Commission File Nu

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): March 16, 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.

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): March 16, 2026 Commission File Nu

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): March 16, 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.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ý Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

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): March 09, 2026 Commission File Nu

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): March 09, 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.

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): March 09, 2026 Commission File Nu

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): March 09, 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.

DTE Gas Company Consolidated Financial Statements as of December 31, 2025 and 2024 and for each of the three years in the period ended December 31, 2025 and Report of Independent Auditors DTE Gas Company Year Ended December 31, 2025 TABLE OF CONTENTS

Exhibit 99.1 DTE Gas Company Consolidated Financial Statements as of December 31, 2025 and 2024 and for each of the three years in the period ended December 31, 2025 and Report of Independent Auditors DTE Gas Company Year Ended December 31, 2025 TABLE OF CONTENTS Page Definitions 1 Management's Narrative Analysis of Results of Operations 2 Report of Independent Auditors 4 Consolidated Statements o

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): February 27, 2026 Commission File

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): February 27, 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

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): February 18, 2026 Commission File

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): February 18, 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

SUBSIDIARIES OF DTE ENERGY COMPANY

Exhibit 21.1 SUBSIDIARIES OF DTE ENERGY COMPANY DTE Energy Company’s principal subsidiaries as of December 31, 2025 are listed below. All other subsidiaries, if considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. Subsidiary State of Incorporation 1. DTE Electric Company Michigan 2. DTE Electric Holdings, LLC Michigan 3. DTE Energy Resources, LLC Delaw

***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. SCHEDULE DESIGNATION D11 PRIMARY SUPP

Exhibit 10.1 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. SCHEDULE DESIGNATION D11 PRIMARY SUPPLY AGREEMENT This Primary Supply Agreement (this “Agreement”) is entered into on this 22st day of October, 2025 (“Contract Date”), by and

ENERGY STORAGE AGREEMENT

EXHIBIT 10.2 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. ENERGY STORAGE AGREEMENT This Energy Storage Agreement (“Agreement”) is entered into as of October 22, 2025 (“Contract Date”) by and between DTE Electric Company, a Michigan

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): February 17, 2026 Commission File

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): February 17, 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

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of the end of its most recent fiscal year, DTE Energy Company (“DTE Energy,” “we,” “our,” or “us”) had one series of junior subordinated debentures issued during 2025 registered under Section 12 of the Securities Exchange Act of 1934, as amended: • 2025 Series H 6.250%

Income Taxes(1)

Exhibit 99.1 DTE Energy reports 2025 accomplishments, earnings and investments •Invested more than $4.3 billion to improve reliability of electric and gas infrastructure and generate cleaner energy •Secured landmark agreement to power Oracle’s new data center •Continued improving electric reliability •Enhanced safety and affordability for natural gas customers •Advanced clean energy development •I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Michigan

2025 Year-end Earnings Conference Call February 17, 2026 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking stat

ex992q425presentationfin 2025 Year-end Earnings Conference Call February 17, 2026 EXHIBIT 99.

Income Taxes(1)

Exhibit 99.1 DTE Energy reports 2025 accomplishments, earnings and investments •Invested more than $4.3 billion to improve reliability of electric and gas infrastructure and generate cleaner energy •Secured landmark agreement to power Oracle’s new data center •Continued improving electric reliability •Enhanced safety and affordability for natural gas customers •Advanced clean energy development •I

2025 Year-end Earnings Conference Call February 17, 2026 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking stat

ex992q425presentationfin 2025 Year-end Earnings Conference Call February 17, 2026 EXHIBIT 99.

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of the end of its most recent fiscal year, DTE Energy Company (“DTE Energy,” “we,” “our,” or “us”) had one series of junior subordinated debentures issued during 2025 registered under Section 12 of the Securities Exchange Act of 1934, as amended: • 2025 Series H 6.250%

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): February 17, 2026 Commission File

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): February 17, 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

***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. SCHEDULE DESIGNATION D11 PRIMARY SUPP

Exhibit 10.1 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. SCHEDULE DESIGNATION D11 PRIMARY SUPPLY AGREEMENT This Primary Supply Agreement (this “Agreement”) is entered into on this 22st day of October, 2025 (“Contract Date”), by and

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Michigan

SUBSIDIARIES OF DTE ENERGY COMPANY

Exhibit 21.1 SUBSIDIARIES OF DTE ENERGY COMPANY DTE Energy Company’s principal subsidiaries as of December 31, 2025 are listed below. All other subsidiaries, if considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. Subsidiary State of Incorporation 1. DTE Electric Company Michigan 2. DTE Electric Holdings, LLC Michigan 3. DTE Energy Resources, LLC Delaw

ENERGY STORAGE AGREEMENT

EXHIBIT 10.2 ***CERTAIN MATERIAL (INDICATED BY THREE ASTERISKS IN BRACKETS) HAS BEEN OMITTED FROM THIS DOCUMENT BECAUSE IT IS BOTH (1) NOT MATERIAL AND (2) IS OF THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. ENERGY STORAGE AGREEMENT This Energy Storage Agreement (“Agreement”) is entered into as of October 22, 2025 (“Contract Date”) by and between DTE Electric Company, a Michigan

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): February 04, 2026 Commission File

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): February 04, 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

Up to $1,500,000,000 DTE Energy Company Common Stock

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-286383 PROSPECTUS SUPPLEMENT (To Prospectus dated April 4, 2025) Up to $1,500,000,000 DTE Energy Company Common Stock On December 19, 2025, we entered into an equity distribution agreement with Barclays Capital Inc., BMO Capital Markets Corp., BNP Paribas Securities Corp., BNY Mellon Capital Markets, LLC, BofA Securities

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): December 19, 2025 Commission File

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): December 19, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

DTE ENERGY COMPANY COMMON STOCK (WITHOUT PAR VALUE) EQUITY DISTRIBUTION AGREEMENT

EX-1.01 Exhibit 1.01 Execution Version DTE ENERGY COMPANY COMMON STOCK (WITHOUT PAR VALUE) EQUITY DISTRIBUTION AGREEMENT December 19, 2025 To: The Managers, Forward Sellers and Forward Purchasers listed on Annex I Ladies and Gentlemen: DTE Energy Company, a Michigan corporation (the “Company”), confirms its agreement (including the schedules and exhibits attached hereto, this “Agreement”) with (i)

Security Type

Calculation of Filing Fee Tables S-3 DTE ENERGY CO Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, without par value 457(o) $ 1,500,000,000.

AMENDED BYLAWS DTE ENERGY COMPANY As amended through December 3, 2025 AMENDED BYLAWS DTE ENERGY COMPANY Page ARTICLE I. Shareholders 1 ARTICLE II. Board of Directors and Committees 15 ARTICLE III. Officers 18 ARTICLE IV. Capital Stock 19 ARTICLE V. D

Exhibit 3.1 AMENDED BYLAWS of DTE ENERGY COMPANY As amended through December 3, 2025 AMENDED BYLAWS of DTE ENERGY COMPANY INDEX Page ARTICLE I. Shareholders 1 ARTICLE II. Board of Directors and Committees 15 ARTICLE III. Officers 18 ARTICLE IV. Capital Stock 19 ARTICLE V. Delivery of Notices 20 ARTICLE VI. Checks, Notes, Bonds, Debentures, etc. 21 ARTICLE VII. Corporate Seal 21 ARTICLE VIII. Amend

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): December 02, 2025 Commission File

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): December 02, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

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): December 05, 2025 Commission File

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): December 05, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

Business Update December 8 - 9, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in

dtebusinessupdate12525fi Business Update December 8 - 9, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect

EEI Financial Conference November 9 - 11, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements con

a2025eeipresentationfina EEI Financial Conference November 9 - 11, 2025 EXHIBIT 99.

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): November 07, 2025 Commission File

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): November 07, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

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): October 28, 2025 Commission File

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): October 28, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Nine Months Ended September 30, 2025

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Nine Months Ended September 30, 2025 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6

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): October 31, 2025 Commission File

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): October 31, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE ENERGY COMPANY THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., SUPPLEMENTAL INDENTURE DATED AS OF SEPTEMBER 1, 2025 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2025 SERIES I 5.05% SENIOR NOTES DUE 203

Exhibit 4.2 DTE ENERGY COMPANY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., TRUSTEE SUPPLEMENTAL INDENTURE DATED AS OF SEPTEMBER 1, 2025 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2025 SERIES I 5.05% SENIOR NOTES DUE 2035 SUPPLEMENTAL INDENTURE, dated as of the 1st day of September, 2025, between DTE ENERGY COMPANY, a corporation organized and

DTE Energy reports third quarter accomplishments, investments and earnings; provides 2026 early outlook

Exhibit 99.1 DTE Energy reports third quarter accomplishments, investments and earnings; provides 2026 early outlook •Executed 1.4 GW data center agreement creating significant affordability benefits for existing customers •Continued substantial investment to improve reliability and transition to cleaner generation; on track to invest $4.4 billion into its utilities in 2025 •Invested nearly $3 bil

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): October 30, 2025 Commission File

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): October 30, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

SUPPLEMENTAL INDENTURE INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1944 AS RESTATED IN PART II OF THE TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989 WHICH BECAME EFFECTIVE ON APRIL 1, 1994 DTE GAS COMPANY formerly know

Exhibit 4.1 FIFTY-SIXTH SUPPLEMENTAL INDENTURE TO INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1944 AS RESTATED IN PART II OF THE TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989 WHICH BECAME EFFECTIVE ON APRIL 1, 1994 DTE GAS COMPANY formerly known as Michigan Consolidated Gas Company TO CITIBANK, N.A., TRUSTEE DATED AS OF SEPTEMBER 1, 2025 CREATING THREE ISSUES OF FI

Sixth Amendment to the DTE Energy Company Executive Supplemental Retirement Plan (Amended and Restated Effective January 1, 2005)

Exhibit 10.1 Sixth Amendment to the DTE Energy Company Executive Supplemental Retirement Plan (Amended and Restated Effective January 1, 2005) Recitals A. DTE Energy Company (the “Company”) adopted the DTE Energy Company Executive Supplemental Retirement Plan (Amended and Restated Effective January 1, 2005) (the “Plan”) to enable the Company to attract and retain executives. B. The Organization an

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended September 30, 2025 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended September 30, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company

3Q 2025 Earnings Conference Call October 30, 2025 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in

q325presentationfinalv2- 3Q 2025 Earnings Conference Call October 30, 2025 Safe harbor statement 2 The information contained herein is as of the date of this document.

SIXTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT Dated as of October 22, 2025, Among DTE GAS COMPANY, as Borrower and THE INITIAL LENDERS NAMED HEREIN, as Initial Lenders and CITIBANK, N.A., as Administrative Agent and JPMORGAN CHASE BANK, N.A.,

Exhibit 10.3 SIXTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT Dated as of October 22, 2025, Among DTE GAS COMPANY, as Borrower and THE INITIAL LENDERS NAMED HEREIN, as Initial Lenders and CITIBANK, N.A., as Administrative Agent and JPMORGAN CHASE BANK, N.A., WELLS FARGO BANK, NATIONAL ASSOCIATION, as Co-Syndication Agent as Co-Syndication Agent and BANK OF AMERICA, N.A., BARCLAYS BANK PLC, TH

SIXTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT Dated as of October 22, 2025, Among DTE ENERGY COMPANY, as Borrower and THE INITIAL LENDERS NAMED HEREIN, as Initial Lenders and CITIBANK, N.A., as Administrative Agent and JPMORGAN CHASE BANK, N.

Exhibit 10.1 SIXTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT Dated as of October 22, 2025, Among DTE ENERGY COMPANY, as Borrower and THE INITIAL LENDERS NAMED HEREIN, as Initial Lenders and CITIBANK, N.A., as Administrative Agent and JPMORGAN CHASE BANK, N.A., WELLS FARGO BANK, NATIONAL ASSOCIATION, as Co-Syndication Agent as Co-Syndication Agent and BANK OF AMERICA, N.A., BARCLAYS BANK PLC,

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): October 22, 2025 Commission File

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): October 22, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

SIXTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT Dated as of October 22, 2025, Among DTE ELECTRIC COMPANY, as Borrower and THE INITIAL LENDERS NAMED HEREIN, as Initial Lenders and CITIBANK, N.A., as Administrative Agent and JPMORGAN CHASE BANK,

Exhibit 10.2 SIXTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT Dated as of October 22, 2025, Among DTE ELECTRIC COMPANY, as Borrower and THE INITIAL LENDERS NAMED HEREIN, as Initial Lenders and CITIBANK, N.A., as Administrative Agent and JPMORGAN CHASE BANK, N.A., WELLS FARGO BANK, NATIONAL ASSOCIATION, as Co-Syndication Agent as Co-Syndication Agent and BANK OF AMERICA, N.A., BARCLAYS BANK PL

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 30, 2025 Commission Fil

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 30, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

NYSE CERTIFICATION

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 17, 2025 Commission Fil

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 17, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 DTE ENERGY COMPANY (Exact name of registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 DTE ENERGY COMPANY (Exact name of registrant as specified in its charter) MICHIGAN (State of incorporation or organization) 38-3217752 (I.R.S. Employer Identification No.) One Energy Plaza Detroi

DTE ENERGY COMPANY THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., SUPPLEMENTAL INDENTURE DATED AS OF SEPTEMBER 15, 2025 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2025 SERIES H 6.25% JUNIOR SUBORDINATED

EXHIBIT 4.1 DTE ENERGY COMPANY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., TRUSTEE SUPPLEMENTAL INDENTURE DATED AS OF SEPTEMBER 15, 2025 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2025 SERIES H 6.25% JUNIOR SUBORDINATED DEBENTURES DUE 2085 SUPPLEMENTAL INDENTURE, dated as of the 15th day of September, 2025 (the “Supplemental Indenture”), betwe

Amendment 1 to the DTE Energy Company Executive Severance Allowance Plan (Effective July 1, 2022)

Exhibit 10.1 Amendment 1 to the DTE Energy Company Executive Severance Allowance Plan (Effective July 1, 2022) Recitals As authorized by resolutions adopted by the DTE Energy Benefit Plan Administration Committee on September 10, 2025, the DTE Energy Company Executive Severance Allowance Plan (Amended and Restated Effective July 1, 2022) (the “Plan”) is amended as follows, effective immediately: P

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 10, 2025 Commission Fil

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 10, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

CHANGE IN CONTROL SEVERANCE AGREEMENT

Exhibit 10.3 CHANGE IN CONTROL SEVERANCE AGREEMENT This CHANGE IN CONTROL SEVERANCE AGREEMENT (this “Agreement”) is entered into as of [ ], 2025 (the “Effective Date”) between DTE Energy Company, a Michigan corporation (the “Company”), and [ ] (the “Executive”). RECITALS A. The Executive is an executive or a key employee of the Company or one or more of its Subsidiaries and has made and is expecte

INDEMNIFICATION AGREEMENT

Exhibit 10.5 INDEMNIFICATION AGREEMENT This Indemnification Agreement (“Agreement”) is entered into as of (“Effective Date”) between DTE Energy Company, a Michigan corporation (“DTE Energy”), and . (the “Indemnitee”). RECITALS A.The Indemnitee currently is, and/or will be in the future, serving in one or more capacities as a director, officer, employee, or agent of DTE Energy or one of its subsidi

CHANGE IN CONTROL SEVERANCE AGREEMENT

Exhibit 10.2 CHANGE IN CONTROL SEVERANCE AGREEMENT This CHANGE IN CONTROL SEVERANCE AGREEMENT (this “Agreement”) is entered into as of [ ], 2025 (the “Effective Date”) between DTE Energy Company, a Michigan corporation (the “Company”), and [ ] (the “Executive”). RECITALS A. The Executive is an executive or a key employee of the Company or one or more of its Subsidiaries and has made and is expecte

CHANGE IN CONTROL SEVERANCE AGREEMENT

Exhibit 10.4 CHANGE IN CONTROL SEVERANCE AGREEMENT This CHANGE IN CONTROL SEVERANCE AGREEMENT (this “Agreement”) is entered into as of [ ], 2025 (the “Effective Date”) between DTE Energy Company, a Michigan corporation (the “Company”), and [ ] (the “Executive”). RECITALS A. The Executive is an executive or a key employee of the Company or one or more of its Subsidiaries and has made and is expecte

$800,000,000 DTE Energy Company $250,000,000 2023 Series C 4.875% Senior Notes due 2028 $550,000,000 2025 Series I 5.05% Senior Notes due 2035

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-286383 Prospectus Supplement (To Prospectus Dated April 4, 2025) $800,000,000 DTE Energy Company $250,000,000 2023 Series C 4.875% Senior Notes due 2028 $550,000,000 2025 Series I 5.05% Senior Notes due 2035 We are offering $250,000,000 of our 2023 Series C 4.875% Senior Notes due 2028 (“2023 Series C notes”) and $550,00

Free Writing Prospectus dated September 9, 2025 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Legal Format: SEC Registered Trade Date: September 9, 2025 Settlement Date*: T+3; September 12, 2025 Security: 2023 Series C 4.875% Senio

FWP Filed Pursuant to Rule 433 Registration No. 333-286383 Free Writing Prospectus dated September 9, 2025 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Legal Format: SEC Registered Trade Date: September 9, 2025 Settlement Date*: T+3; September 12, 2025 Security: 2023 Series C 4.875% Senior Notes due 2028 (the “2028 Notes”) 2025 Series I 5.050% Senior Notes due 2035 (the “2035 N

Security Type

Calculation of Filing Fee Tables S-3 DTE ENERGY CO Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt 2023 Series C 457(r) 250,000,000 $ 254,945,000.

Security Type

Calculation of Filing Fee Tables S-3 DTE ENERGY CO Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt 2025 Series H 457(r) 24,000,000 $ 25.

Subject to Completion, Dated September 9, 2025

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-286383 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion

$600,000,000 DTE Energy Company 2025 Series H 6.25% Junior Subordinated Debentures due 2085

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-286383 Prospectus Supplement (To Prospectus Dated April 4, 2025)  $600,000,000 DTE Energy Company 2025 Series H 6.25% Junior Subordinated Debentures due 2085 We are offering $600,000,000 of our 2025 Series H 6.25% Junior Subordinated Debentures due 2085 (“junior subordinated debentures”). We will pay interest on the juni

Free Writing Prospectus dated September 8, 2025 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2025 Series H 6.250% Junior Subordinated Debentures due 2085 (the “Junior Subordinated Debentures”) Format: SEC Registered Size

FWP Filed Pursuant to Rule 433 Registration No. 333-286383 Free Writing Prospectus dated September 8, 2025 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2025 Series H 6.250% Junior Subordinated Debentures due 2085 (the “Junior Subordinated Debentures”) Format: SEC Registered Size: $600,000,000 Maturity Date: October 1, 2085 Coupon: 6.250% Interest Payment Dates: Januar

Subject to Completion, Dated September 8, 2025 

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-286383 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion

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 05, 2025 Commission Fil

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 05, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

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): August 18, 2025 Commission File N

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): August 18, 2025 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

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Six Months Ended June 30, 2025

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Six Months Ended June 30, 2025 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6 Conso

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): July 31, 2025 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.)

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): July 29, 2025 Commission File Num

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): July 29, 2025 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.)

DTE Energy reports second quarter accomplishments, investments and earnings

Exhibit 99.1 DTE Energy reports second quarter accomplishments, investments and earnings •Continued substantial investment to improve reliability and transition to cleaner generation; on track to invest $4.4 billion into its utilities in 2025 •Invested $1.8 billion in the first half of 2025 to improve electric infrastructure and reliability for customers •Broke ground on Cold Creek Solar Park •Beg

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended June 30, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Mich

DATED AS OF MAY 1, 2025 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) AS TRUSTEE SUPPL

Exhibit 4.1 INDENTURE DATED AS OF MAY 1, 2025 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) AS TRUSTEE SUPPLEMENTAL TO MORTGAGE AND DEED OF TRUST DATED AS OF OCTOBER 1, 1924 PROVIDING FOR (A) GENERAL AND REFUNDING MORTGAGE BONDS, 202

2Q 2025 Earnings Conference Call July 29, 2025 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements con

q225presentationfinal-ve 2Q 2025 Earnings Conference Call July 29, 2025 EXHIBIT 99.

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): July 07, 2025 Commission File Num

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): July 07, 2025 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.)

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): June 18, 2025 Commission File Num

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): June 18, 2025 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.)

Page 1 of 2 DTE Energy Board of Directors elects Joi Harris as CEO; Jerry Norcia elected Executive Board Chairman Harris’s 34-year track record of proven leadership at DTE and strong working relationship with Norcia to ensure a smooth, successful tra

Page 1 of 2 DTE Energy Board of Directors elects Joi Harris as CEO; Jerry Norcia elected Executive Board Chairman Harris’s 34-year track record of proven leadership at DTE and strong working relationship with Norcia to ensure a smooth, successful transition DETROIT, June 23 — DTE Energy President and Chief Operating Officer Joi Harris will be named President and Chief Executive Officer of the company on Sept.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 Commission file number 1-11607 DTE ENERGY COM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 Commission file number 1-11607 DTE ENERGY COMPANY DEFINED CONTRIBUTION PLANS DTE Energy Company Savings and Stock Ownership Plan DTE Electric Company Savings & Stock Ownership Plan for Employees

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): June 16, 2025 Commission File Num

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): June 16, 2025 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.)

As filed with the Securities and Exchange Commission on May 30, 2025

As filed with the Securities and Exchange Commission on May 30, 2025 Registration No.

DTE ENERGY COMPANY DIRECTORS' POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS:

EXHIBIT 24.1 DTE ENERGY COMPANY DIRECTORS' POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS: That each of the undersigned does hereby severally make, constitute and appoint David Ruud, JoAnn Chávez, Kathrine M. Lorenz, Lisa A. Muschong, Sarah M. Bello, and Matthew Misiak, and each of them, his or her true and lawful attorneys-in-fact to sign and execute for him or her and on his or her behalf, as a di

Calculation of Filing Fee Table (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table S-8 (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit (2) Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid Equity Common Stock (3) Rule 457(h) 3,000,000 $136.

As filed with the Securities and Exchange Commission on May 30, 2025

As filed with the Securities and Exchange Commission on May 30, 2025 Registration Nos.

DTE ENERGY COMPANY DIRECTORS' POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS:

EXHIBIT 24.1 DTE ENERGY COMPANY DIRECTORS' POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS: That each of the undersigned does hereby severally make, constitute and appoint David Ruud, JoAnn Chávez, Kathrine M. Lorenz, Lisa A. Muschong, Sarah M. Bello, and Matthew Misiak, and each of them, his or her true and lawful attorneys-in-fact to sign and execute for him or her and on his or her behalf, as a di

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): May 16, 2025 Commission File Numb

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): May 16, 2025 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.)

AGA Financial Forum May 18 - 20, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in

AGA Financial Forum May 18 - 20, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “proj

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

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): May 8, 2025 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.) R

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): May 2, 2025 Commission File Numbe

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): May 2, 2025 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.) R

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three Months Ended March 31, 2025

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three Months Ended March 31, 2025 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6 Consolidated

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Mic

1Q 2025 Earnings Conference Call May 1, 2025 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements conta

1Q 2025 Earnings Conference Call May 1, 2025 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 01, 2025 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.)

DTE Energy reports first quarter accomplishments, investments and earnings

Exhibit 99.1 DTE Energy reports first quarter accomplishments, investments and earnings •Continued significant investment to improve reliability and transition to cleaner generation; on track to invest $4.4 billion into our utilities in 2025 •Began operations of Michigan’s largest battery energy storage system •Boosted small businesses with energy efficiency upgrade grants •Recognized as a Gallup

As filed with the Securities and Exchange Commission on April 4, 2025

S-3ASR Table of Contents As filed with the Securities and Exchange Commission on April 4, 2025 Registration Nos.

Form T-1 Statement of Eligibility of The Bank of New York Mellon Trust Company, N.A., with respect to the DTE Electric Indenture.

Exhibit 25.3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

Form T-1 Statement of Eligibility of The Bank of New York Mellon Trust Company, N.A., with respect to the DTE Electric Mortgage.

Exhibit 25.2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

Supplemental Indenture, dated as of February 1, 2025, to the Amended and Restated Indenture, dated as of April 9, 2001, by and between DTE Energy Company and The Bank of New York Mellon Trust Company, N.A., as successor trustee (2025 Series A)

Exhibit 4.1 DTE ENERGY COMPANY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., TRUSTEE SUPPLEMENTAL INDENTURE DATED AS OF FEBRUARY 1, 2025 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2025 SERIES A 5.20% SENIOR NOTES DUE 2030 SUPPLEMENTAL INDENTURE, dated as of the 1st day of February, 2025, between DTE ENERGY COMPANY, a corporation organized and ex

Form T-1 Statement of Eligibility of The Bank of New York Mellon Trust Company, N.A., with respect to the DTE Energy Indenture.

Exhibit 25.1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ☐ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (Exact name of trustee as specified in its charter) 95-

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table FORM S-3 (Form Type) DTE Energy Company DTE Electric Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type (1) Security Class Title (1) Fee Calculation or Carry  Forward Rule (2)  Amount  Registered (2)  Proposed Maximum Offering Price Per Unit (2) Maximum Aggregate Offering Price (2) Fee Rate (2) Amount of Registration Fee (2) Newly Registered Securities Fees to Be Paid Equity DTE Energy Co.

DTE Energy Directors’ Power of Attorney.

Exhibit 24.1 DTE ENERGY COMPANY DIRECTORS’ POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS: That each of the undersigned does hereby severally make, constitute and appoint, David Ruud, JoAnn Chávez, Lisa A. Muschong, Timothy J. Lepczyk, Sarah M. Bello, and Kathrine M. Lorenz, and each of them, his or her true and lawful attorneys-in-fact to sign and execute for him or her and on his or her behalf, as

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ý Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

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): March 04, 2025 Commission File Nu

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): March 04, 2025 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.

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 28, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

DTE Gas Company Consolidated Financial Statements as of December 31, 2024 and 2023 and for each of the three years in the period ended December 31, 2024 and Report of Independent Auditors DTE Gas Company Year Ended December 31, 2024 TABLE OF CONTENTS

Exhibit 99.1 DTE Gas Company Consolidated Financial Statements as of December 31, 2024 and 2023 and for each of the three years in the period ended December 31, 2024 and Report of Independent Auditors DTE Gas Company Year Ended December 31, 2024 TABLE OF CONTENTS Page Definitions 1 Management's Narrative Analysis of Results of Operations 2 Report of Independent Auditors 4 Consolidated Statements o

Calculation of Filing Fee Table (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table 424B2 (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security  Type Security Class Title Fee Calculation or Carry Forward Rule (1) Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid Debt 2025 Series A  Rule 457(r)  $1,100,000,000  99.

$1,100,000,000 DTE Energy Company 2025 Series A 5.20% Senior Notes due 2030

Filed Pursuant to Rule 424(b)(2) Registration No. 333-264196 Prospectus Supplement (To Prospectus Dated April 8, 2022) $1,100,000,000 DTE Energy Company 2025 Series A 5.20% Senior Notes due 2030 We are offering $1,100,000,000 of our 2025 Series A 5.20% Senior Notes due 2030 (“notes”). We will pay interest on the notes on April 1 and October 1 of each year, beginning October 1, 2025 at the rate of

Free Writing Prospectus dated February 18, 2025 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2025 Series A 5.200% Senior Notes due 2030 (the “Notes”) Legal Format: SEC Registered Principal Amount: $1,100,000,000 Trade Da

FWP Filed Pursuant to Rule 433 Registration No. 333-264196 Free Writing Prospectus dated February 18, 2025 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2025 Series A 5.200% Senior Notes due 2030 (the “Notes”) Legal Format: SEC Registered Principal Amount: $1,100,000,000 Trade Date: February 18, 2025 Settlement Date*: T+3; February 21, 2025 Maturity Date: April 1, 2030

Subject to Completion, Dated February 18, 2025

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-264196 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): February 10, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

SECOND AMENDMENT TO THE DTE ENERGY COMPANY SUPPLEMENTAL SAVINGS PLAN (Amended and Restated Effective January 1, 2005)

Exhibit 10.1 SECOND AMENDMENT TO THE DTE ENERGY COMPANY SUPPLEMENTAL SAVINGS PLAN (Amended and Restated Effective January 1, 2005) As authorized by resolutions adopted by the DTE Energy Benefit Plan Administration Committee on March 19, 2013, the DTE Energy Company Supplemental Savings Plan (Amended and Restated Effective January 1, 2005), is amended as follows: 1. Effective January 1, 2005, Secti

DTE Energy Policy

Exhibit 19.1 DTE Energy Policy GV15 Insider Trading Policy February 4, 2025 1. Applicability This policy applies to all members of the Board of Directors (“Directors”), officers and employees of DTE Energy Company (“Company”) and its subsidiaries, together with any agents or advisors to the Company. 2. Policy A. General 1.If a Director, officer, employee, agent or advisor of the Company has materi

THIRD AMENDMENT TO THE DTE ENERGY COMPANY SUPPLEMENTAL SAVINGS PLAN (Amended and Restated Effective January 1, 2005)

Exhibit 10.2 THIRD AMENDMENT TO THE DTE ENERGY COMPANY SUPPLEMENTAL SAVINGS PLAN (Amended and Restated Effective January 1, 2005) Recitals As authorized by resolutions adopted by the DTE Energy Benefit Plan Administration Committee on October 1, 2024, the DTE Energy Company Supplemental Savings Plan (Amended and Restated Effective January 1, 2005) (the “Plan”) is amended as follows, effective as o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2024 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Michigan

2024 Year-end Earnings Conference Call February 13, 2025 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking stat

q424presentationfinal-ve 2024 Year-end Earnings Conference Call February 13, 2025 EXHIBIT 99.

SUBSIDIARIES OF DTE ENERGY COMPANY

Exhibit 21.1 SUBSIDIARIES OF DTE ENERGY COMPANY DTE Energy Company’s principal subsidiaries as of December 31, 2024 are listed below. All other subsidiaries, if considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. Subsidiary State of Incorporation 1. DTE Electric Company Michigan 2. DTE Electric Holdings, LLC Michigan 3. DTE Energy Resources, LLC Delaw

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): February 13, 2025 Commission File

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): February 13, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

DTE Energy Company Segment Net Income (Unaudited) Three Months Ended December 31, 2024 2023 Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings (In millions

Exhibit 99.1 DTE Energy reports 2024 accomplishments, investments and earnings •Top-tier customer bill management; reduced customers' bills by $300 million in fuel and transportation cost savings •Invested $4.4 billion in electric and gas infrastructure to improve reliability and generate cleaner energy •Customers experienced a nearly 70% improvement in time spent without power from 2023 to 2024 •

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): February 6, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE Energy names Casey Santos to board of directors DETROIT, Feb. 6, 2025 — DTE Energy (NYSE: DTE) has named Casey Santos to its board of directors effective Feb. 6. Santos recently joined Caliber as chief technology officer. Prior to Caliber, Santos

DTE Energy names Casey Santos to board of directors DETROIT, Feb. 6, 2025 — DTE Energy (NYSE: DTE) has named Casey Santos to its board of directors effective Feb. 6. Santos recently joined Caliber as chief technology officer. Prior to Caliber, Santos led Asurion’s global technology and procurement teams as their chief information officer. She has more than 25 years of experience as an executive le

Regulation FD Disclosure, Financial Statements and Exhibits

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): January 07, 2025 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

Business Update January 8, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this

Business Update January 8, 2025 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projected,

Business Update December 16, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in thi

Business Update December 16, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projecte

Regulation FD Disclosure, Financial Statements and Exhibits

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): December 16, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

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): November 08, 2024 Commission File

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): November 08, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

EEI Financial Conference November 10 - 12, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements co

EEI Financial Conference November 10 - 12, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “cou

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Nine Months Ended September 30, 2024

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Nine Months Ended September 30, 2024 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 31, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE ENERGY COMPANY THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., SUPPLEMENTAL INDENTURE DATED AS OF AUGUST 1, 2024 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2024 SERIES E 4.95% SENIOR NOTES DUE 2027

Exhibit 4.1 DTE ENERGY COMPANY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., TRUSTEE SUPPLEMENTAL INDENTURE DATED AS OF AUGUST 1, 2024 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2024 SERIES E 4.95% SENIOR NOTES DUE 2027 SUPPLEMENTAL INDENTURE, dated as of the 1st day of August, 2024, between DTE ENERGY COMPANY, a corporation organized and existi

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 24, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE Energy Company Segment Net Income (Unaudited) Three Months Ended September 30, 2024 2023 Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings (In million

Exhibit 99.1 DTE Energy reports third quarter 2024 accomplishments, earnings and investments in improving energy infrastructure •Continued on path to improving electric reliability through investments in smart grid technology and new substations •Began construction of three new solar parks, all funded by company’s voluntary MIGreenPower program •Installed nearly 1,000 free air conditioners for peo

3Q 2024 Earnings Conference Call October 24, 2024 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements

3Q 2024 Earnings Conference Call October 24, 2024 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “c

SUPPLEMENTAL INDENTURE INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1944 AS RESTATED IN PART II OF THE TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989 WHICH BECAME EFFECTIVE ON APRIL 1, 1994 DTE GAS COMPANY formerly know

Exhibit 4.2 FIFTY-FIFTH SUPPLEMENTAL INDENTURE TO INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1944 AS RESTATED IN PART II OF THE TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989 WHICH BECAME EFFECTIVE ON APRIL 1, 1994 DTE GAS COMPANY formerly known as Michigan Consolidated Gas Company TO CITIBANK, N.A., TRUSTEE DATED AS OF OCTOBER 1, 2024 CREATING TWO ISSUES OF FIRST

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended September 30, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company

Regulation FD Disclosure, Financial Statements and Exhibits

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): October 01, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

Business Update October 2, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this

Business Update October 2, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projected,

Business Update September 5, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in thi

Business Update September 5, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projecte

Regulation FD Disclosure, Financial Statements and Exhibits

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 04, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

Regulation FD Disclosure, Financial Statements and Exhibits

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): August 14, 2024 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

Business Update August 15, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this

Business Update August 15, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projected,

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): August 1, 2024 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.

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Six Months Ended June 30, 2024

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Six Months Ended June 30, 2024 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6 Conso

$1,200,000,000 DTE Energy Company 2024 Series E 4.95% Senior Notes due 2027

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-264196 Prospectus Supplement (To Prospectus Dated April 8, 2022) $1,200,000,000 DTE Energy Company 2024 Series E 4.95% Senior Notes due 2027 We are offering $1,200,000,000 of our 2024 Series E 4.95% Senior Notes due 2027 (“notes”). We will pay interest on the notes on January 1 and July 1 of each year, beginning January

Calculation of Filing Fee Table (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amou

EX-FILING FEES Exhibit 107 Calculation of Filing Fee Table 424B2 (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid  Debt 2024 Series E Rule 457(r) $1,200,000,000 99.

Subject to Completion, Dated July 29, 2024

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-264196 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion, Date

Free Writing Prospectus dated July 29, 2024 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2024 Series E 4.950% Senior Notes due 2027 (the “Notes”) Legal Format: SEC Registered Principal Amount: $1,200,000,000 Trade Date:

Filed Pursuant to Rule 433 Registration No. 333-264196 Free Writing Prospectus dated July 29, 2024 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2024 Series E 4.950% Senior Notes due 2027 (the “Notes”) Legal Format: SEC Registered Principal Amount: $1,200,000,000 Trade Date: July 29, 2024 Settlement Date*: T+4; August 2, 2024 Maturity Date: July 1, 2027 Interest Paymen

DTE Energy Company Segment Net Income (Unaudited) Three Months Ended June 30, 2024 2023 Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings (In millions) DT

Exhibit 99.1 DTE Energy reports second quarter 2024 accomplishments, earnings and investments in improving energy infrastructure •Committed to improving electric reliability for customers •Broke ground on region’s largest battery energy storage facility •Helped make NFL Draft a carbon-neutral success •Grew Energy Efficiency Academy in Detroit and expanded to Grand Rapids •Honored with Civic 50 awa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended June 30, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Mich

2Q 2024 Earnings Conference Call July 25, 2024 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements con

q224presentationfinal-ve 2Q 2024 Earnings Conference Call July 25, 2024 EXHIBIT 99.

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): July 25, 2024 Commission File Num

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): July 25, 2024 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.)

DTE ENERGY COMPANY THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., SUPPLEMENTAL INDENTURE DATED AS OF APRIL 30, 2024 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2024 SERIES D 5.85% SENIOR NOTES DUE 2034

Exhibit 4.1 DTE ENERGY COMPANY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., TRUSTEE SUPPLEMENTAL INDENTURE DATED AS OF APRIL 30, 2024 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2024 SERIES D 5.85% SENIOR NOTES DUE 2034 SUPPLEMENTAL INDENTURE, dated as of the 30th day of April, 2024, between DTE ENERGY COMPANY, a corporation organized and existi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 Commission file number 1-11607 DTE ENERGY COM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 Commission file number 1-11607 DTE ENERGY COMPANY DEFINED CONTRIBUTION PLANS DTE Energy Company Savings and Stock Ownership Plan DTE Electric Company Savings & Stock Ownership Plan for Employees

Regulation FD Disclosure, Financial Statements and Exhibits

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): June 17, 2024 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.)

Business Update June 18, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this do

Business Update June 18, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projected,”

AGA Financial Forum May 19 - 21, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in

AGA Financial Forum May 19 - 21, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “proj

Regulation FD Disclosure, Financial Statements and Exhibits

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): May 17, 2024 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.)

Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

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): May 2, 2024 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.) R

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three Months Ended March 31, 2024

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three Months Ended March 31, 2024 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6 Consolidated

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 2, 2024 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.) R

Calculation of Filing Fee Table (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amou

Exhibit 107 Calculation of Filing Fee Table 424B2 (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid  Debt 2024 Series D Rule 457(r) $850,000,000 99.

$850,000,000 DTE Energy Company 2024 Series D 5.85% Senior Notes due 2034

424B2 Table of Contents Filed Pursuant to Rule 424(b)(2) Registration No. 333-264196 Prospectus Supplement (To Prospectus Dated April 8, 2022) $850,000,000 DTE Energy Company 2024 Series D 5.85% Senior Notes due 2034 We are offering $850,000,000 of our 2024 Series D 5.85% Senior Notes due 2034 (“notes”). We will pay interest on the notes on June 1 and December 1 of each year, beginning December 1,

Subject to Completion, Dated April 29, 2024

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-264196 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion, Date

Free Writing Prospectus dated April 29, 2024 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2024 Series D 5.850% Senior Notes due 2034 (the “Notes”) Legal Format: SEC Registered Principal Amount: $850,000,000 Maturity Date

Filed Pursuant to Rule 433 Registration No. 333-264196 Free Writing Prospectus dated April 29, 2024 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2024 Series D 5.850% Senior Notes due 2034 (the “Notes”) Legal Format: SEC Registered Principal Amount: $850,000,000 Maturity Date: June 1, 2034 Interest Payment Dates: June 1 and December 1, commencing on December 1, 2024 Be

1Q 2024 Earnings Conference Call April 25, 2024 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements co

q124presentation42324fin 1Q 2024 Earnings Conference Call April 25, 2024 EXHIBIT 99.

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): April 25, 2024 Commission File Nu

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): April 25, 2024 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.

DTE ENERGY COMPANY THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., SUPPLEMENTAL INDENTURE DATED AS OF FEBRUARY 1, 2024 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2024 SERIES A 5.10% SENIOR NOTES DUE 2029

Exhibit 4.1 DTE ENERGY COMPANY AND THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., TRUSTEE SUPPLEMENTAL INDENTURE DATED AS OF FEBRUARY 1, 2024 SUPPLEMENTING THE AMENDED AND RESTATED INDENTURE DATED AS OF APRIL 9, 2001 PROVIDING FOR 2024 SERIES A 5.10% SENIOR NOTES DUE 2029 SUPPLEMENTAL INDENTURE, dated as of the 1st day of February, 2024, between DTE ENERGY COMPANY, a corporation organized and ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended March 31, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Mic

DTE Energy Company Segment Net Income (Unaudited) Three Months Ended March 31, 2024 2023 Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings (In millions) D

Exhibit 99.1 DTE Energy reports first quarter earnings and accomplishments •Continued significant investments to improve reliability and transition to cleaner generation; on track to invest more than $4 billion into our utilities in 2024 •Earned the ENERGY STAR Partner of the Year award for sustained excellence in energy efficiency •Celebrated 175 years of service at DTE Gas •Grew MIGreenPower vol

INDENTURE DATED AS OF FEBRUARY 1, 2024 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) A

Exhibit 4.2 INDENTURE DATED AS OF FEBRUARY 1, 2024 DTE ELECTRIC COMPANY formerly known as The Detroit Edison Company (One Energy Plaza, Detroit, Michigan 48226) TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. (500 Ross Street, 12th Floor, Pittsburgh, PA 15262) AS TRUSTEE SUPPLEMENTAL TO MORTGAGE AND DEED OF TRUST DATED AS OF OCTOBER 1, 1924 PROVIDING FOR (A) GENERAL AND REFUNDING MORTGAGE BONDS

DTE Energy Co. (DTE) Vote Yes: Item #4 – Climate Transition Plan, Inclusive of Downstream Gas Utility Emissions Annual Meeting: May 2, 2024

Main Post Office, P.O. Box 751 www.asyousow.org Berkeley, CA 94704 BUILDING A SAFE, JUST, AND SUSTAINABLE WORLD SINCE 1992 Notice of Exempt Solicitation Pursuant to Rule 14a-103 Name of the Registrant: DTE Energy Co. Name of persons relying on exemption: As You Sow™ Address of persons relying on exemption: Main Post Office, P.O. Box 751, Berkeley, CA 94704 Written materials are submitted pursuant

Business Update April 2 - 3, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in thi

barclayspresentationfina Business Update April 2 - 3, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,”

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): April 02, 2024 Commission File Nu

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): April 02, 2024 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.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ý Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

Business Update March 5, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this do

Business Update March 5, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projected,”

Regulation FD Disclosure, Financial Statements and Exhibits

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): March 04, 2024 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.

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): March 1, 2024 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.)

DTE Gas Company Consolidated Financial Statements as of December 31, 2023 and 2022 and for each of the three years in the period ended December 31, 2023 and Report of Independent Auditors DTE Gas Company Year Ended December 31, 2023 TABLE OF CONTENTS

Exhibit 99.1 DTE Gas Company Consolidated Financial Statements as of December 31, 2023 and 2022 and for each of the three years in the period ended December 31, 2023 and Report of Independent Auditors DTE Gas Company Year Ended December 31, 2023 TABLE OF CONTENTS Page Definitions 1 Management's Narrative Analysis of Results of Operations 2 Report of Independent Auditors 4 Consolidated Statements o

DTE / DTE Energy Company / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0053-dteenergyco.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 14)* Name of issuer: DTE Energy Co Title of Class of Securities: Common Stock CUSIP Number: 233331107 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule

Calculation of Filing Fee Table (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amou

Exhibit 107 Calculation of Filing Fee Table 424B2 (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Fees to Be Paid Debt 2024 Series A Rule 457(r) $1,200,000,000 99.

$1,200,000,000 DTE Energy Company 2024 Series A 5.10% Senior Notes due 2029

Filed Pursuant to Rule 424(b)(2) Registration No. 333-264196 Prospectus Supplement (To Prospectus Dated April 8, 2022) $1,200,000,000 DTE Energy Company 2024 Series A 5.10% Senior Notes due 2029 We are offering $1,200,000,000 of our 2024 Series A 5.10% Senior Notes due 2029 (“notes”). We will pay interest on the notes on March 1 and September 1 of each year , beginning September 1, 2024 at the rat

Free Writing Prospectus dated February 12, 2024 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2024 Series A 5.100% Senior Notes due 2029 (the “Notes”) Legal Format: SEC Registered Principal Amount: $1,200,000,000 Maturity

Filed Pursuant to Rule 433 Registration No. 333-264196 Free Writing Prospectus dated February 12, 2024 DTE ENERGY COMPANY PRICING TERM SHEET Issuer: DTE Energy Company Security: 2024 Series A 5.100% Senior Notes due 2029 (the “Notes”) Legal Format: SEC Registered Principal Amount: $1,200,000,000 Maturity Date: March 1, 2029 Interest Payment Dates: March 1 and September 1, commencing on September 1

Subject to Completion, Dated February 12, 2024

Filed Pursuant to Rule 424(b)(5) Registration No. 333-264196 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. Subject to Completion, Dated February 12, 202

DTE Energy Company Segment Net Income (Unaudited) Three Months Ended December 31, 2023 2022 Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings Reported Earnings Pre-tax Adjustments Income Taxes(1) Operating Earnings (In millions

Exhibit 99.1 DTE Energy reports 2023 earnings and accomplishments •Invested more than $3.8 billion in electric and gas infrastructure to improve reliability and generate more clean energy •Historic investments in utility infrastructure exceed strong cash generated by our businesses, as supported by regulatory construct •Reduced customers' bills by $300 million in fuel and transportation cost savin

DTE ENERGY COMPANY LONG-TERM INCENTIVE PLAN AMENDED AND RESTATED EFFECTIVE MAY 20, 2021 as further amended effective October 25, 2023 ARTICLE I

EXHIBIT 10.1 DTE ENERGY COMPANY LONG-TERM INCENTIVE PLAN AMENDED AND RESTATED EFFECTIVE MAY 20, 2021 as further amended effective October 25, 2023 ARTICLE I Purposes 1.01 General Purposes The DTE Energy Company Long-Term Incentive Plan is intended to: (a) assist the Company and its Subsidiaries in recruiting and retaining individuals with ability and initiative by enabling such persons to particip

CLAWBACK POLICY OF DTE ENERGY COMPANY

EX 97.1 CLAWBACK POLICY OF DTE ENERGY COMPANY 1. This policy sets forth the conditions under which DTE Energy Company (the “Company”) will seek reimbursement with respect to incentive-based compensation (including stock options awarded as compensation) paid or awarded to current or former executive officers of the Company. 2. Definitions. (a) The term “executive officers” shall mean current or for

SUBSIDIARIES OF DTE ENERGY COMPANY

Exhibit 21.1 SUBSIDIARIES OF DTE ENERGY COMPANY DTE Energy Company’s principal subsidiaries as of December 31, 2023 are listed below. All other subsidiaries, if considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. Subsidiary State of Incorporation 1. DTE Electric Company Michigan 2. DTE Electric Holdings, LLC Michigan 3. DTE Energy Trading, Inc. Michig

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 08, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2023 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company Michigan

2023 Year-end Earnings Conference Call February 8, 2024 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking state

2023 Year-end Earnings Conference Call February 8, 2024 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “ma

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): January 31, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A Amendment No. 1 CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 22, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer I

DTE / DTE Energy Company / BlackRock Inc. Passive Investment

SC 13G/A 1 us2333311072012524.txt us2333311072012524.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 14) DTE ENERGY CO - (Name of Issuer) Common Stock - (Title of Class of Securities) 233331107 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

DTE / DTE Energy Company / STATE STREET CORP Passive Investment

SC 13G/A 1 DTEEnergyCo.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 EXIT FILING DTE ENERGY CO (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 233331107 (CUSIP NUMBER) 12/31/2023 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH T

Business Update January 11, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this

Business Update January 11, 2024 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,” “projected

Regulation FD Disclosure, Financial Statements and Exhibits

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): January 10, 2024 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE / DTE Energy Company / Capital Research Global Investors - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* DTE Energy Co. (Name of Issuer) Common Stock (Title of Class of Securities) 233331107 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to desi

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table S-8 (Form Type) DTE Energy Company (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee Equity Common Stock Rule 457(h) 5,570,000(3) $110.

As filed with the Securities and Exchange Commission on December 22, 2023

As filed with the Securities and Exchange Commission on December 22, 2023 Registration No.

Directors’ Power of Attorney.

EXHIBIT 24.1 DTE ENERGY COMPANY DIRECTORS’ POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS: That each of the undersigned does hereby severally make, constitute and appoint David Ruud, JoAnn Chavez, Lisa A. Muschong, Sarah M. Bello, and Kathrine M. Lorenz, and each of them, his or her true and lawful attorneys-in-fact to sign and execute for him or her and on his or her behalf, as a director of DTE En

Amended Bylaws of DTE Energy Company, as amended through December 6, 2023 (Exhibit 3.1 to DTE Energy’s Form 8-K filed December 8, 2023).

Exhibit 3.1 AMENDED BYLAWS of DTE ENERGY COMPANY As amended through December 6, 2023 AMENDED BYLAWS of DTE ENERGY COMPANY INDEX Page ARTICLE I. Shareholders 1 ARTICLE II. Board of Directors and Committees 12 ARTICLE III. Officers 16 ARTICLE IV. Capital Stock 17 ARTICLE V. Delivery of Notices 18 ARTICLE VI. Checks, Notes, Bonds, Debentures, etc 19 ARTICLE VII. Corporate Seal 19 ARTICLE VIII. Amendm

Business Update December 8, 2023 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this

postratecasepresentation Business Update December 8, 2023 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “

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): December 8, 2023 Commission File

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): December 8, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

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

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): December 6, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

EEI Financial Conference November 12 - 14, 2023 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements co

a2023eeipresentationfina EEI Financial Conference November 12 - 14, 2023 EXHIBIT 99.

Regulation FD Disclosure, Financial Statements and Exhibits

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): November 9, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 2, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Nine Months Ended September 30, 2023

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Nine Months Ended September 30, 2023 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period ended September 30, 2023 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 1-11607 DTE Energy Company

3Q Earnings Conference Call November 1, 2023 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements conta

3Q Earnings Conference Call November 1, 2023 EXHIBIT 99.2 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “may,” “could,

AMENDMENT NO. 1 FIFTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT

Exhibit 10.1 EXECUTION VERSION AMENDMENT NO. 1 TO FIFTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT THIS AMENDMENT NO. 1 TO FIFTH AMENDED AND RESTATED FIVE-YEAR CREDIT AGREEMENT (this “Amendment”) is made as of October25, 2023, by and among DTE ENERGY COMPANY (the “Borrower”), the lenders listed on the signature pages hereof (the “Lenders”), and CITIBANK, N.A. (“Citibank”), as Administrative A

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 01, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification

SUPPLEMENTAL INDENTURE INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1944 AS RESTATED IN PART II OF THE TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989 WHICH BECAME EFFECTIVE ON APRIL 1, 1994 DTE GAS COMPANY formerly know

Exhibit 4.1 FIFTY-FOURTH SUPPLEMENTAL INDENTURE TO INDENTURE OF MORTGAGE AND DEED OF TRUST DATED AS OF MARCH 1, 1944 AS RESTATED IN PART II OF THE TWENTY-NINTH SUPPLEMENTAL INDENTURE DATED AS OF JULY 15, 1989 WHICH BECAME EFFECTIVE ON APRIL 1, 1994 DTE GAS COMPANY formerly known as Michigan Consolidated Gas Company TO CITIBANK, N.A., TRUSTEE DATED AS OF OCTOBER 1, 2023 CREATING TWO ISSUES OF FIRST

DTE Energy reports third quarter earnings and accomplishments

Exhibit 99.1 DTE Energy reports third quarter earnings and accomplishments •Announced DTE Electric roadmap to improved reliability with Distribution Grid Plan •Significant storm activity and cool summer weather results in operating EPS guidance midpoint change from $6.25 to $5.75 per share •Launched electric undergrounding pilot project in Detroit •Named Energy Star’s Partner of the Year for Energ

DTE Energy names Nicholas Akins to board of directors DETROIT, Oct. 26, 2023 — DTE Energy (NYSE: DTE) has named Nicholas K. Akins, retired Executive Chair of American Electric Power (AEP), to its board of directors, effective December 4. Akins, who r

DTE Energy names Nicholas Akins to board of directors DETROIT, Oct. 26, 2023 — DTE Energy (NYSE: DTE) has named Nicholas K. Akins, retired Executive Chair of American Electric Power (AEP), to its board of directors, effective December 4. Akins, who recently retired from AEP after more than 40 years with the company, also served as the company’s chief executive officer from 2011 through 2022. He le

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

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): October 25, 2023 Commission File Number: 1-11607 DTE Energy Company Michigan 38-3217752 (State or other jurisdiction of incorporation or organization) (I.R.S Employer Identification N

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): August 9, 2023 Commission File Nu

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): August 9, 2023 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.

Business Update August 10, 2023 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this

msndrpresentationfinal89 Business Update August 10, 2023 EXHIBIT 99.1 Safe harbor statement 2 The information contained herein is as of the date of this document. DTE Energy expressly disclaims any current intention to update any forward-looking statements contained in this document as a result of new information or future events or developments. Words such as “anticipate,” “believe,” “expect,” “m

DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Six Months Ended June 30, 2023

Exhibit 99.1 DTE Gas Company Unaudited Consolidated Financial Statements as of and for the Three and Six Months Ended June 30, 2023 TABLE OF CONTENTS Page Definitions 1 Consolidated Statements of Operations (Unaudited) 2 Consolidated Statements of Comprehensive Income (Unaudited) 3 Consolidated Statements of Financial Position (Unaudited) 4 Consolidated Statements of Cash Flows (Unaudited) 6 Conso

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): August 3, 2023 Commission File Nu

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): August 3, 2023 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.

DTE Energy reports second quarter earnings

Exhibit 99.1 DTE Energy reports second quarter earnings •Received approval of landmark CleanVision Integrated Resource Plan (IRP) settlement agreement with Michigan stakeholders, ending DTE’s use of coal in 2032 •Continued progress with MIGreenPower program •Invested heavily in infrastructure to improve reliability and generate more clean energy •Named one of the top 50 most community-minded compa