401(k) · DOL Form 5500 · 2023

One Gas, Inc. 401(k) Plan

Data updated 2026-08-25

$864M
Total assets Above avg plan size
3,716
Participants Above avg headcount
98th
Percentile by assets National rank
$232,450
Avg per participant Above avg balance/head
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Official DOL plan name: One Gas, Inc. 401(k) Plan · Sponsored by One Gas, Inc. · Oklahoma · Utilities

$864M in assets, 3,716 participants

One Gas, Inc.'s One Gas, Inc. 401(k) Plan reported $864M in total assets and 3,716 participants in its 2023 DOL Form 5500 filing, ranking in the 98th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #633 in Utilities (721 peers)

Coverage in Oklahoma

One Gas, Inc. 401(k) Plan covers 3,716 participants in Oklahoma, 4.9x the typical Oklahoma plan (state average ~760 per filing). Assets: $864M.

#633
in Utilities (721 peers)
+11.6%
assets growth YoY
8.7×
vs typical plan assets (national mean)

One Gas, Inc. 401(k) Plan's outsized position by total assets

One Gas, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$863,783,000 Top 2% higher than 98% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

One Gas, Inc. 401(k) Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. One Gas, Inc. 401(k) Plan lands in the large band (3,716 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • One Gas, Inc. 401(k) Plan reported net income rose from -$134M in the plan year 2022 filing to $90M in the plan year 2023 filing.
  • One Gas, Inc. 401(k) Plan end-of-year assets rose from $774M in the plan year 2022 filing to $864M in the plan year 2023 filing.
  • One Gas, Inc. 401(k) Plan reported participants rose from 3,586 in the plan year 2022 filing to 3,716 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 463561936 · One Gas, Inc. PY 2023 · 401(k)

One Gas, Inc. 401(k) Plan · $864M · 3,716 · 98th

  • PART $864M
  • PART 3,716
  • PART 98th
  • PART 401(k)
  • PART near Four Seasons Hotels Retirement Benefit Plan
  • PART ind #633

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Utilities retirement plans → · Plans in Oklahoma →

One Gas, Inc. 401(k) Plan in the asset neighbourhood

Travel + Leisure Co. Employee Savings PlanTravel + Leisure Co. Employe…$865MThrivewise Pooled Employer PlanThrivewise Pooled Employer P…$865MWorthington Industries, Inc. Deferred Profit Sharing PlanWorthington Industries, Inc.…$865MOne Gas, Inc. 401(k) Plan$864MFour Seasons Hotels Retirement Benefit PlanFour Seasons Hotels Retireme…$863M
End-of-year total assets ($M) among One Gas, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Oklahoma filing particulars

Total Assets (Beginning of Year)$774M
Net Assets (End of Year)$864M
Net Income$90M
Employer EIN463561936
Plan Effective Date2014-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (One Gas, Inc.)

Sponsor-wide plan assets over time

All One Gas, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$1.7B 9.763316484910609% vs 2022
2024 filing year
$1.5B$1.55B$1.6B$1.65B$1.7B$1.75B 202220232024 $1.54B $1.69B ▲ +9.7%
Year Plans Participants Total Assets
2022 2 4,426 $1.5B
2023 2 4,456 $1.7B
2024 2 4,530 $1.7B

Nearby 401(k) Plans in Oklahoma

Peer 401(k) plans, same state, same plan type, ranked by total assets.

One Gas, Inc. 401(k) Plan vs. nearby 401(k) plans in Oklahoma, assets vs. participants Scatter plot of 6 data points. 050001000015000 012345 Total assets ($B) Participants One Gas, Inc. 401(k) Plan, Total assets ($B): 0.863783 · Participants: 3716One Gas, Inc. 401(k) PlanQuiktrip Corporation Retirement Plan, Total assets ($B): 4.212452319 · Participants: 11746Quiktrip Corporation Retirement PlanThe Williams Investment Plus Plan, Total assets ($B): 1.681202476 · Participants: 5041The Williams Investment Plus PlanOneok, Inc. 401(k) Plan, Total assets ($B): 1.156591 · Participants: 2965Oneok, Inc. 401(k) PlanBok Financial 401(k) Plan, Total assets ($B): 1.048169756 · Participants: 4766Bok Financial 401(k) PlanDevon Energy Corporation Incentive Savings Plan, Total assets ($B): 0.932957189 · Participants: 1858Devon Energy Corporation Incentive Savings Plan
One Gas, Inc. 401(k) Plan vs. nearby 401(k) plans in Oklahoma, assets vs. participants
Compare One Gas, Inc. 401(k) Plan side-by-side with 3 peers →

One Gas, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Oklahoma, the nearest 401(k) by assets is Four Seasons Hotels Retirement Benefit Plan in ($863M); by covered participants it is Chemed/Roto Rooter Savings & Retirement Plan in OH (3,716 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($864M here).

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did One Gas, Inc. 401(k) Plan assets move in 2023? ▼
One Gas, Inc. 401(k) Plan grew at a solid clip - up 11.6% during 2023, from $774M to $864M. Reported net income was $90M.
How have One Gas, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), One Gas, Inc.'s sponsor-wide assets grew 9.8%, from $1.5B to $1.7B.
Where does One Gas, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
One Gas, Inc. 401(k) Plan ranks in the 98th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to One Gas, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Four Seasons Hotels Retirement Benefit Plan in ($863M, 15,652 participants).
Which 401(k) plans cover a similar participant headcount to One Gas, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Chemed/Roto Rooter Savings & Retirement Plan in OH (3,716 participants, $353M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 463561936.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.