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 Represented by Local 223 of the Utility Workers Union of America
DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 17 of the International Brotherhood of Electrical Workers
DTE Gas Company Investment and Stock Ownership Plan

DTE ENERGY COMPANY
One Energy Plaza
Detroit, Michigan 48226-1279









DTE Energy Company Defined Contribution Plans

Table of Contents





REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


June 20, 2024


To the Participants, Benefit Plan Administration Committee, and Investment Committee
DTE Energy Company Defined Contribution Plans

Opinion on the Financial Statements

We have audited the accompanying statements of net assets available for benefits of the DTE Energy Company Savings and Stock Ownership Plan (the “SSOP”), the DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 223 of the Utility Workers Union of America (the “Local 223 Plan”), the DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 17 of the International Brotherhood of Electrical Workers (the “Local 17 Plan”), and the DTE Gas Company Investment and Stock Ownership Plan (the “Gas ISOP”), collectively referred to as the “DTE Energy Company Defined Contribution Plans” (the “Plans”), as of December 31, 2023 and 2022, and the related statements of changes in net assets available for benefits for the year ended December 31, 2023, as well as the related notes and schedules (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plans as of December 31, 2023 and 2022, and the changes in their net assets available for benefits for the year ended December 31, 2023, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Plans’ management. Our responsibility is to express an opinion on the Plans’ financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Plans in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Plans are not required to have, nor were we engaged to perform, an audit of their internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Plans’ internal control over financial reporting. Accordingly, we express no such opinion.



1

Participants, Benefit Plan Administration Committee, and Investment Committee
DTE Energy Company Defined Contribution Plans
June 20, 2024
Page Two

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
(CONTINUED)

Basis for Opinion (continued)

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Supplementary Information

The supplementary information contained in the schedules of assets (held at end of year) as of December 31, 2023 has been subjected to audit procedures performed in conjunction with the audits of the Plans’ financial statements. The supplementary information is the responsibility of the Plans’ management. Our audit procedures included determining whether the supplementary information reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplementary information. In forming our opinion on the supplementary information, we evaluated whether the supplementary information, including its form and content, is presented in conformity with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974, as amended. In our opinion, the supplementary information is fairly stated, in all material respects, in relation to the financial statements as a whole.


/s/ GJC CPA’S & ADVISORS

Detroit, Michigan

We have served as the auditor of the SSOP, the Local 223 Plan, and the Local 17 Plan since 2002, and we have served as the Gas ISOP’s auditor since 1999.



2

DTE Energy Company Defined Contribution Plans

Statements of Net Assets Available for Benefits


December 31, 2023
SSOPLocal 223 PlanLocal 17 Plan Gas ISOPTotal (Memorandum Only)
(In thousands)
ASSETS
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4)$2,176,369 $835,345 $195,434 $88,848 $3,295,996 
Notes receivable from participants26,848 22,202 3,684 1,972 54,706 
Net Assets Available for Benefits$2,203,217 $857,547 $199,118 $90,820 $3,350,702 

December 31, 2022
SSOPLocal 223 PlanLocal 17 Plan Gas ISOPTotal (Memorandum Only)
(In thousands)
ASSETS
Participant-directed investment in DTE Energy Company Master Plan Trust, at fair value (Note 4)$1,931,217 $763,591 $163,863 $77,200 $2,935,871 
Notes receivable from participants24,634 19,804 3,184 1,775 49,397 
Net Assets Available for Benefits$1,955,851 $783,395 $167,047 $78,975 $2,985,268 

See accompanying Notes to Financial Statements
3

DTE Energy Company Defined Contribution Plans

Statements of Changes in Net Assets Available for Benefits

Year Ended December 31, 2023
SSOPLocal 223 Plan Local 17 PlanGas ISOPTotal (Memorandum Only)
(In thousands)
Additions to Net Assets Attributed to:
Plans' share of the DTE Energy Company Master Plan Trust investment income$285,349 $99,096 $25,394 $10,966 $420,805 
Interest on participant notes receivable1,559 1,294 197 119 3,169 
Contributions:
Employer45,249 21,786 3,208 2,844 73,087 
Participant70,467 37,113 12,278 3,742 123,600 
Rollover3,733 1,298 32 242 5,305 
119,449 60,197 15,518 6,828 201,992 
Net transfers from other sponsored plans and other3,996 — 2,379 — 6,375 
Total Additions410,353 160,587 43,488 17,913 632,341 
Deductions from Net Assets Attributed to:
Distributions and withdrawals(161,288)(79,406)(11,270)(5,959)(257,923)
Investment advisory and other fees(1,699)(659)(147)(104)(2,609)
Net transfers to other sponsored plans and other— (6,370)— (5)(6,375)
Total Deductions(162,987)(86,435)(11,417)(6,068)(266,907)
Net Increase247,366 74,152 32,071 11,845 365,434 
Net Assets Available for Benefits
Beginning of year1,955,851 783,395 167,047 78,975 2,985,268 
End of year$2,203,217 $857,547 $199,118 $90,820 $3,350,702 

See accompanying Notes to Financial Statements
4

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements


NOTE 1 — DESCRIPTION OF THE PLANS
The following description of the DTE Energy Company Savings and Stock Ownership Plan (SSOP), the DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 223 of the Utility Workers Union of America (Local 223 Plan), the DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 17 of the International Brotherhood of Electrical Workers (Local 17 Plan), and the DTE Gas Company Investment and Stock Ownership Plan (Gas ISOP) (collectively, the Plans) provides only general information. Participants should refer to the respective Summary Plan Descriptions and the respective Plan documents for a more complete description of each of the Plan's provisions.
General
The Plans are voluntary, defined contribution plans covering the employee groups described below.
The SSOP covers regular full-time and part-time employees of DTE Electric Company (DTE Electric), DTE Gas Company (DTE Gas), DTE Enterprises, Inc., DTE Energy Corporate Services, LLC (DTE LLC), affiliates of DTE LLC (Participating Affiliates), Citizens Gas Fuel Company (Citizens Gas), and Midwest Energy Resources Company (MERC) that are not represented by a collective bargaining agreement. The SSOP also covers certain regular full-time and part-time employees of DTE Electric, Citizens Gas, and non-regulated Participating Affiliates who are represented by collective bargaining agreements.
The SSOP has three distinct subdivisions, which originate from the merger of former plans. These subdivisions are generally referred to as the DTE Electric Plan, the MCN Plan, and the Citizens Plan. Participation in the subdivisions may be dependent upon the defined benefit plan in which the employee participates.
DTE LLC is a subsidiary of DTE Energy Company (DTE Energy). DTE LLC, the specific employers listed above, and the Participating Affiliates are otherwise referred to as the “Company” or “Companies.”
The Local 223 Plan covers regular full-time and part-time employees of a Regulated Participating Employer (DTE LLC, DTE Electric, and DTE Gas) represented by Local 223 of the Utility Workers Union of America.
The Local 17 Plan covers regular full-time and part-time employees of the Company represented by Local 17 of the International Brotherhood of Electrical Workers.
The Gas ISOP covers regular full-time and part-time employees of the Company represented by:
•Local #799C Transmission and Storage Operations (T&SO), International Chemical Workers Union Council, United Food and Commercial Workers;
•Local #799C Northern, International Chemical Workers Union Council, United Food and Commercial Workers;
•Local #70C, International Chemical Workers Union Council, United Food and Commercial Workers; or
•Local #132C, International Chemical Workers Union Council, United Food and Commercial Workers
Employees are eligible to participate in the respective Plans as soon as administratively practicable upon hire. The Plans are subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (ERISA).
DTE LLC is the sponsor of the Plans. The DTE Energy Benefit Plan Administration Committee (BPAC) is the administrator of the Plans (Plan Administrator). The Plan Administrator has the responsibility for the day-to-day administration of the Plans. DTE LLC, acting through the DTE Energy Investment Committee, is responsible for the selection and retention of the Plans' investment options and any investment manager that may be appointed under the DTE Energy Company Master Plan Trust (Master Trust). Empower Trust Company, LLC is the Plans' Trustee (Trustee), and Empower Retirement is the Plans' recordkeeper (Recordkeeper).
Investment management fees, brokerage fees, transfer taxes, and other expenses incidental to the purchase or sale of securities are paid from investment assets.
5

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements — (Continued)
Contributions
Each of the Plans provides for Employee Contributions in the form of pre-tax contributions (Tax Deferred Contributions), post-tax contributions (Employee After-Tax Contributions) (excluding the Citizens Plan), and Roth 401(k) Contributions, up to a maximum of 100% of annual eligible compensation (as defined by the respective Plans) and subject to maximum limitations established by the Internal Revenue Code of 1986, as amended (IRC). Certain employee groups are automatically enrolled with a 4% pre-tax deferral rate. If stated in the respective Plan document, the deferral rate increases 1 percent each year, until it reaches a maximum of 10 percent. Participants age 50 or older in the plan year are also eligible to make Catch-Up Contributions and Roth 401(k) Catch-Up Contributions subject to the limitations established by the IRC. Participants may also directly roll over distributions of certain assets from a tax-qualified plan of a prior employer (Direct Rollover Contributions) into the Plans.
After six months of service for participants of the Local 223, Local 17, and Gas ISOP Plans, after two years of service for participants of the Citizens Plan subdivision of the SSOP, and upon hire for all other participants, the Company makes Company Contributions on behalf of eligible participants (as defined by the respective Plans) based on a participant’s Employee Contributions, excluding Catch-Up Contributions. The amount of the Company Contribution is dependent upon the respective Plan and participant's employee group, as specified in the Plan document.
For eligible employees of the SSOP, Local 223, and Gas ISOP Plans, and as defined in those respective Plan documents, the Company will make a Non-Elective Contribution each pay period equal to 4% of the participant’s eligible compensation. Employees do not need to make Employee Contributions to be eligible for the Non-Elective Contribution.
Participant Accounts
Each participant's account is increased with the participant's Employee Contributions, including eligible Direct Rollover Contributions, Company Contributions, and Non-Elective Contributions. Each participant's account is reduced by withdrawals, loans and fees. Participant accounts also increase or decrease due to investment gains or losses. Forfeited balances of terminated participants' non-vested accounts are used to reduce future Company Contributions. The benefit to which a participant is entitled is the benefit that can be provided from the participant's vested account.
Vesting
Employee Contributions and Direct Rollover Contributions are fully vested at all times. In general, Company Contributions and Non-Elective Contributions will vest according to the following schedule:
Years of ServicePercent Vested
Less than 20%
220%
340%
460%
580%
6100%
In addition, a participant will generally have a fully vested interest in Company Contributions and Non-Elective Contributions upon (a) attainment of age 65 while actively employed, (b) disability, as defined in the Plans, (c) death, or (d) in some cases, in connection with the sale of a business.
Investment Options
Participants may elect to have their Employee Contributions and Direct Rollover Contributions invested entirely in any one of the investment funds or in any combination of the investment funds held in the Master Trust. For the Local 223 Plan, Local 17 Plan, and Gas ISOP, Company Contributions and Non-Elective Contributions will be initially invested in the DTE Energy Stock Fund. For the SSOP, Company Contributions will be made either in cash or in shares of DTE Energy common stock at the option of DTE LLC, and Non-Elective Contributions will be invested in the DTE Energy Stock Fund or other funds designated by the Plan Administrator. If the Company Contribution is made in cash, the DTE Energy Stock Fund will immediately purchase shares of DTE Energy common stock at current market rates. Contributions made by the Company invested in the DTE Energy Stock Fund, or to any other fund directed by the Plan Administrator, can be transferred to any investment by participants.
6

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements — (Continued)
The entire DTE Energy Stock Fund is considered to be the Employee Stock Ownership Plan (ESOP) portion of the Plans. Quarterly dividends from DTE Energy common stock are automatically reinvested in DTE Energy common stock, unless distributed. DTE Energy common stock dividends may be paid out in cash on a quarterly basis, at the participant's election, and are reported as distributions in the accompanying Statements of Changes in Net Assets Available for Benefits.
The Trustee purchases and sells shares of DTE Energy common stock in open market transactions at prevailing market prices. However, the Trustee may purchase or sell DTE Energy common stock from or to DTE Energy if the purchase or sale price is for adequate consideration. Brokerage commissions are charged against the DTE Energy Stock Fund.
A participant's interest in the DTE Energy Stock Fund is measured by share trading. A share-traded investment is traded and valued on a share basis.
Administrative Expenses
The Company pays certain administrative and other expenses of the Plans.
Voting Rights
Each participant is entitled to exercise voting rights attributable to the shares of DTE Energy common stock allocated to their account and is notified by the Trustee prior to the time that such rights are to be exercised. The Trustee is not permitted to vote any allocated share for which instructions have not been given by a participant in the DTE Electric Plan subdivision of the SSOP, in the Local 223 Plan, or in the Local 17 Plan. For the remaining subdivisions of the SSOP and for the Gas ISOP, shares with respect to which the Trustee does not receive voting instructions will be voted by the Trustee in the same proportion as shares for which the Trustee receives voting instructions.
Distributions, Withdrawals, and Participant Notes Receivable
Distributions can be made upon termination of employment, death or disability, as defined under each of the plans. Some distribution options include 100% lump sum payments, installment payments, or partial lump sum payments (no more than four times per year). Distributions cannot be deferred beyond April 1st of the year following the year the participant attains the required minimum distribution age unless the participant is still employed by the Company. The Plans also allow participants to withdraw, prior to termination of employment, certain portions of their account balances as an in-service distribution, upon attainment of age 59 ½, or under financial hardship, as defined in the respective Plan documents.
Participants may borrow from their accounts subject to certain maximum and minimum amounts as described by the respective Plan documents and the IRC. Notes receivable (participant loans), for which only two notes receivable per participant can be outstanding at a given time, are collateralized by the participant’s account balance and bear interest at a market rate. No loans may be made from Company Contributions or Non-Elective Contributions.
Plan Termination
Although it has not expressed any intent to do so, the Company has the right under the Plans to discontinue its contributions at any time and to terminate each of the Plans subject to the provisions of ERISA, except as otherwise agreed to pursuant to collective bargaining. In the event any of the Plans terminate, participants will become 100% vested within those respective terminated Plans.

NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Total (Memorandum Only)
The “Total (Memorandum Only)” columns in the accompanying Statements of Net Assets Available for Benefits and Statements of Changes in Net Assets Available for Benefits represent the total balances and activity for the Plans currently participating in the Master Trust.
7

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements — (Continued)
Valuation of Investments and Income Recognition
Investments are reported at fair value. The common/collective trusts are reported at net asset value (NAV) as a practical expedient for fair value. See Note 4, "The DTE Energy Company Master Plan Trust," for additional information.
Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date. Net appreciation (depreciation) includes the Master Trust's net gains and losses on investments bought and sold as well as held during the year.
Notes Receivable from Participants
Notes receivable from participants are valued at cost plus accrued interest. If a participant ceases to make loan repayments and the Plan Administrator deems the participant loan to be in default, the participant loan balance is reduced, and a benefit payment is recorded.
Payment of Benefits
Benefits are recorded when paid.
Use of Estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management of the Plans to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of additions to and deductions from net assets available for benefits during the reporting period. Actual results could differ from those estimates.
Risks and Uncertainties
The Master Trust invests in various securities, including registered investment companies, DTE Energy common stock, and common/collective trusts. Investment securities, in general, are exposed to various risks, such as interest rate, credit, and overall market volatility. Due to the level of risk associated with certain investment securities, it is reasonably possible that changes in the values of investment securities will occur in the near term, and such changes could materially affect participants’ account balances and the amounts reported in the financial statements.
Fair Value
Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated, or generally unobservable inputs. The Master Trust makes certain assumptions it believes that market participants would use in pricing assets or liabilities, including assumptions about risk and the risks inherent in the inputs to valuation techniques. The Master Trust believes it uses valuation techniques that maximize the use of observable market-based inputs and minimize the use of unobservable inputs.
8

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements — (Continued)
A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. All assets and liabilities are required to be classified in their entirety based on the lowest level of input that is significant to the fair value measurement in its entirety. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability, and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. The Master Trust classifies fair value balances based on the fair value hierarchy defined as follows:
•Level 1 — Consists of unadjusted quoted prices in active markets for identical assets or liabilities that the Master Trust has the ability to access as of the reporting date.
•Level 2 — Consists of inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data.
•Level 3 — Consists of unobservable inputs for assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost-benefit constraints.

NOTE 3 — FEDERAL INCOME TAX STATUS
The SSOP and the Gas ISOP each obtained a determination letter dated April 2, 2015. The Local 17 Plan and the Local 223 Plan each obtained a determination letter dated April 3, 2015. Each of the determination letters from the Internal Revenue Service (IRS) stated that the respective Plans, as then designed, were in compliance with the applicable requirements of the IRC. The Plans are qualified under Sections 401(a) and 401(k) of the IRC, and therefore, the related Master Trust is exempt from taxation. Accordingly, no provision for income taxes has been included in the accompanying financial statements. The Plans are no longer subject to federal income tax examinations by the IRS for years prior to 2020.

NOTE 4 — THE DTE ENERGY COMPANY MASTER PLAN TRUST
The Company established the Master Trust pursuant to a trust agreement with Empower Trust Company, LLC, as Trustee, in order to permit the commingling of trust assets of the Plans for investment and administrative purposes. The assets in the Master Trust are held in various participant-directed investments. Each of the Plans’ allocated portion of the investments is equal to the beginning of the year fair value of the Plans’ interest in the Master Trust, adjusted by the Plans' pro-rata share of the Master Trust expenses, plus actual contributions and investment income, less actual distributions, administrative expenses, and investments losses (if any). Investment income or loss is based on each participant’s elected investment options, and administrative expenses are allocated to the individual plans based upon their pro-rata share in the investments of the Master Trust.
At December 31, 2023 and 2022 each of the Plans' respective interests in the net assets of the Master Trust were as follows:
2023
Plan's Interest in Master Trust Balances
SSOPLocal 223 PlanLocal 17 PlanGas ISOPMaster Trust Balances
(In thousands)
Investments, at fair value:
Registered investment companies and other equities$256,233 $70,238 $16,127 $9,263 $351,861 
DTE Energy common stock296,580 191,223 31,818 17,834 537,455 
Common/collective trusts1,623,556 573,884 147,489 61,751 2,406,680 
Assets held in Master Trust$2,176,369 $835,345 $195,434 $88,848 $3,295,996 
9

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements — (Continued)
2022
Plan's Interest in Master Trust Balances
SSOPLocal 223 PlanLocal 17 PlanGas ISOPMaster Trust Balances
(In thousands)
Investments, at fair value:
Registered investment companies and other equities$301,824 $95,627 $18,706 $10,690 $426,847 
DTE Energy common stock309,712 200,783 31,561 17,985 560,041 
Common/collective trusts1,319,681 467,181 113,596 48,525 1,948,983 
Assets held in Master Trust$1,931,217 $763,591 $163,863 $77,200 $2,935,871 
___________________________

The following is a summary of investment income in the Master Trust for the year ended December 31, 2023:
2023
(In thousands)
Net appreciation$378,300 
Dividends and interest42,505 
Total investment income$420,805 
The following tables present investments of the Master Trust measured and recorded at fair value on a recurring basis as of December 31, 2023 and 2022:
2023
Level 1
Other(a)
Total
(In thousands)
Registered investment companies and other equities$351,861 $— $351,861 
DTE Energy common stock537,455 — 537,455 
Common/collective trusts— 2,406,680 2,406,680 
Total Investments at fair value$889,316 $2,406,680 $3,295,996 
___________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
2022
Level 1
Other(a)
Total
(In thousands)
Registered investment companies and other equities$426,847 $— $426,847 
DTE Energy common stock560,041 — 560,041 
Common/collective trusts— 1,948,983 1,948,983 
Total Investments at fair value$986,888 $1,948,983 $2,935,871 
___________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
The Master Trust had no Level 2 or Level 3 assets at December 31, 2023 and 2022.

Registered Investment Companies (mutual funds) and other equities
These investments are valued at the NAV of shares held by the plans at year end, as quoted in the active market, and are classified within Level 1 of the valuation hierarchy.
10

DTE Energy Company Defined Contribution Plans

Notes to Financial Statements — (Continued)
DTE Energy Common Stock and Other Common Stock
These investments are valued at the closing price reported on the New York Stock Exchange and are classified within Level 1 of the valuation hierarchy.
Common/Collective Trusts
These investments represent interests in pooled investment vehicles designed primarily for collective investment of employee benefit trusts. The fair value of the investments in this category has been estimated using the NAV per unit as a practical expedient provided by the fund managers. There were no unfunded commitments at December 31, 2023 and 2022. There were no redemption restrictions or redemption notice periods at December 31, 2023 and 2022, and the assets can be redeemed from the Plans at any time.

NOTE 5 — RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS
The Master Trust holds shares of DTE Energy common stock; therefore, related transactions qualify as party-in-interest transactions.
At December 31, 2023 and 2022, the Master Trust held 4,874,429 and 4,765,092 shares, respectively of DTE Energy common stock with a fair value of $537,455 and $560,041 (in thousands), respectively. For the year ended December 31, 2023, the Master Trust received dividends on DTE Energy common stock of $18,291 (in thousands). For the year ended December 31, 2023, 1,228,206 shares of DTE Energy common stock were purchased for $132,745 (in thousands) and 1,118,869 shares were sold for $120,658 (in thousands).

11

Supplementary Information

DTE Energy Company Savings and Stock Ownership Plan
Federal Employer Identification Number: 20-5898509; Plan Number: 002

SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
Form 5500, Schedule H, Part IV, Line 4i

(a)

(b)
Identity of issue, borrower,
lessor, or similar party		(c)
Description of investment including maturity date, rate of interest, collateral, par or maturity value		(d)
Cost		(e)
Current Value
*Participant notes receivableParticipant notes receivable with interest rates ranging from 4.25% to 9.50% $— $26,848,276 

* Party-in-interest
12

Supplementary Information

DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 223 of the Utility Workers Union of America
Federal Employer Identification Number: 20-5898509; Plan Number: 003

SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
Form 5500, Schedule H, Part IV, Line 4i

(a)

(b)
Identity of issue, borrower,
lessor, or similar party		(c)
Description of investment including maturity date, rate of interest, collateral, par or maturity value		(d)
Cost		(e)
Current Value
*Participant notes receivableParticipant notes receivable with interest rates ranging from 4.25% to 9.50%$— $22,201,538 

* Party-in-interest

13

Supplementary Information

DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 17 of the International Brotherhood of Electrical Workers
Federal Employer Identification Number: 20-5898509; Plan Number: 004

SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
Form 5500, Schedule H, Part IV, Line 4i

(a)

(b)
Identity of issue, borrower,
lessor, or similar party		(c)
Description of investment including maturity date, rate of interest, collateral, par or maturity value		(d)
Cost		(e)
Current Value
*Participant notes receivableParticipant notes receivable with interest rates ranging from 4.25% to 9.50% $— $3,684,089 

* Party-in-interest

14

Supplementary Information

DTE Gas Company Investment and Stock Ownership Plan
Federal Employer Identification Number: 20-5898509; Plan Number: 006

SCHEDULE OF ASSETS (HELD AT END OF YEAR)
AS OF DECEMBER 31, 2023
Form 5500, Schedule H, Part IV, Line 4i

(a)

(b)
Identity of issue, borrower,
lessor, or similar party		(c)
Description of investment including maturity date, rate of interest, collateral, par or maturity value		(d)
Cost		(e)
Current Value
*Participant notes receivableParticipant notes receivable with interest rates ranging from 4.25% to 9.50%$— $1,971,567 

* Party-in-interest

15

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Trustee (or other persons who administer the employee benefit plan) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
DTE ENERGY COMPANY
SAVINGS AND STOCK OWNERSHIP PLAN
June 20, 2024/s/ DIANE M. ANTISHIN
Diane M. Antishin
Vice President Human Resources, Chief Diversity & Inclusion Officer, and
Chair of Benefit Plan Administration Committee


16

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Trustee (or other persons who administer the employee benefit plan) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
DTE ELECTRIC COMPANY SAVINGS & STOCK OWNERSHIP PLAN FOR EMPLOYEES REPRESENTED BY LOCAL 223 OF THE UTILITY WORKERS UNION OF AMERICA
June 20, 2024/s/ DIANE M. ANTISHIN
Diane M. Antishin
Vice President Human Resources, Chief Diversity & Inclusion Officer, and
Chair of Benefit Plan Administration Committee


17

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Trustee (or other persons who administer the employee benefit plan) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
DTE ELECTRIC COMPANY SAVINGS & STOCK OWNERSHIP PLAN FOR EMPLOYEES REPRESENTED BY LOCAL 17 OF THE INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS
June 20, 2024/s/ DIANE M. ANTISHIN
Diane M. Antishin
Vice President Human Resources, Chief Diversity & Inclusion Officer, and
Chair of Benefit Plan Administration Committee


18

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the Trustee (or other persons who administer the employee benefit plan) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
DTE GAS COMPANY INVESTMENT AND STOCK OWNERSHIP PLAN
June 20, 2024/s/ DIANE M. ANTISHIN
Diane M. Antishin
Vice President Human Resources, Chief Diversity & Inclusion Officer, and
Chair of Benefit Plan Administration Committee


19


EXHIBIT 23


CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


June 20, 2024


To the Participants, Benefit Plan Administration Committee, and Investment Committee
DTE Energy Company Defined Contribution Plans

We consent to the incorporation by reference in Registration Statement No. 333-276230 of DTE Energy Company on Form S-8 of our report dated June 20, 2024, appearing in this Annual Report on Form 11-K of the DTE Energy Company Savings and Stock Ownership Plan, the DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 223 of the Utility Workers Union of America, the DTE Electric Company Savings & Stock Ownership Plan for Employees Represented by Local 17 of the International Brotherhood of Electrical Workers, and the DTE Gas Company Investment and Stock Ownership Plan, collectively referred to as the “DTE Energy Company Defined Contribution Plans”, as of, and for the year ended, December 31, 2023.


/s/ GJC CPA’S & ADVISORS

Detroit, Michigan


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