v3.26.1
THE DTE ENERGY COMPANY MASTER PLAN TRUST
 12 Months Ended
Dec. 31, 2025
EBP Plans  
EBP, Master Trust [Line Items]  
THE DTE ENERGY COMPANY MASTER PLAN TRUST 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, 2025 and 2024 each of the Plans' respective interests in the net assets of the Master Trust were as follows:
2025
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$270,040 $84,178 $19,822 $11,384 $385,424 
DTE Energy common stock318,832 205,896 36,072 22,539 583,339 
Common/collective trusts1,998,866 750,384 206,258 84,345 3,039,853 
Assets held in Master Trust$2,587,738 $1,040,458 $262,152 $118,268 $4,008,616 
2024
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$241,228 $73,397 $17,973 $9,848 $342,446 
DTE Energy common stock309,089 207,768 33,714 20,469 571,040 
Common/collective trusts1,756,577 658,096 172,880 72,209 2,659,762 
Assets held in Master Trust$2,306,894 $939,261 $224,567 $102,526 $3,573,248 

The following is a summary of investment income in the Master Trust for the year ended December 31, 2025:
2025
(In thousands)
Net appreciation$518,509 
Dividends and interest34,837 
Total investment income$553,346 
The following tables present investments of the Master Trust measured and recorded at fair value on a recurring basis as of December 31, 2025 and 2024:
2025
Level 1
Other(a)
Total
(In thousands)
Registered investment companies and other equities$385,424 $— $385,424 
DTE Energy common stock583,339 — 583,339 
Common/collective trusts— 3,039,853 3,039,853 
Total Investments at fair value$968,763 $3,039,853 $4,008,616 
___________________________
(a)Amounts represent assets valued at NAV as a practical expedient for fair value.
2024
Level 1
Other(a)
Total
(In thousands)
Registered investment companies and other equities$342,446 $— $342,446 
DTE Energy common stock571,040 — 571,040 
Common/collective trusts— 2,659,762 2,659,762 
Total Investments at fair value$913,486 $2,659,762 $3,573,248 
___________________________
(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, 2025 and 2024.

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.
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, 2025 and 2024. There were no redemption restrictions or redemption notice periods at December 31, 2025 and 2024, and the assets can be redeemed from the Plans at any time.