v3.26.1
Investments
 12 Months Ended
Dec. 31, 2025
EBP 002  
EBP, Investment, Fair Value and NAV [Line Items]  
Investments Investments
The following tables set forth the Trust recurring fair value measurements for each level within the fair value hierarchy at the periods indicated:
December 31, 2025
Level 1Level 2Level 3SubtotalMeasured at NAV (c)Total
(In thousands)
Assets
Money market fund$30,409 $— $— $30,409 $— $30,409 
Mutual funds (a)572,153 — — 572,153 — 572,153 
Collective investment trusts (b)— — — — 865,295 865,295 
Common stock of ONEOK, Inc.220,727 — — 220,727 — 220,727 
Common stock of ONE Gas, Inc. (d)
6,291 — — 6,291 — 6,291 
Total investments, at fair value$829,580 $— $— $829,580 $865,295 $1,694,875 
(a) - Party-in-interest transactions include investment in the Fidelity Balance K fund and the Fidelity Emerging Markets Index Fund of $45 million and $5 million, respectively, at December 31, 2025.
(b) - This category represents pooled funds that are primarily invested in collective trusts exclusively designed for qualified retirement plans such as the 401(k).
(c) - Plan asset investments measured at fair value using the net asset value per share.
(d) - The common stock of ONE Gas, Inc. is frozen, and no exchanges or new participant or Company contributions may be invested in this investment option.


December 31, 2024
Level 1Level 2Level 3SubtotalMeasured at NAV (c)Total
(In thousands)
Assets
Money market fund$37,456 $— $— $37,456 $— $37,456 
Mutual funds (a)463,380 — — 463,380 — 463,380 
Collective investment trusts (b)— — — — 582,285 582,285 
Common stock of ONEOK, Inc.276,156 — — 276,156 — 276,156 
Common stock of ONE Gas, Inc. (d)
6,870 — — 6,870 — 6,870 
Total investments, at fair value$783,862 $— $— $783,862 $582,285 $1,366,147 
(a) - Party-in-interest transactions include investment in the Fidelity Balance K fund and the Fidelity Emerging Markets Index Fund of $42 million and $3 million, respectively, at December 31, 2024.
(b) - This category represents pooled funds that are primarily invested in collective trusts exclusively designed for qualified retirement plans such as the 401(k).
(c) - Plan asset investments measured at fair value using the net asset value per share.
(d) - The common stock of ONE Gas, Inc. is frozen, and no exchanges or new participant or Company contributions may be invested in this investment option.