Defined Benefit (Pension) · DOL Form 5500 · 2023

One Gas, Inc. Pension Plan

Data updated 2026-08-25

$796M
Total assets Above avg plan size
740
Participants Near avg headcount
98th
Percentile by assets National rank
$1.1M
Avg per participant High balance/head
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Official DOL plan name: One Gas, Inc. Retirement Plan · Sponsored by One Gas, Inc. · Oklahoma · Utilities

$796M in assets, 740 participants

One Gas, Inc.'s One Gas, Inc. Retirement Plan reported $796M in total assets and 740 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.

  • #625 in Utilities (721 peers)

Where One Gas, Inc. Retirement Plan sits by assets

One Gas, Inc. Retirement Plan sits in the top 5% of all filed plans by assets, $796M for 740 participants (~$1.1M/participant), up 3.4% in 2023.

#625
in Utilities (721 peers)
+3.4%
assets growth YoY
8.0×
vs typical plan assets (national mean)

One Gas, Inc. Retirement Plan's outsized position by total assets

One Gas, Inc. Retirement Plan vs every filed plan by assets

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

$795,535,000 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. Retirement Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. One Gas, Inc. Retirement Plan sits mid-pack in the medium band (740 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • One Gas, Inc. Retirement Plan reported net income rose from -$246M in the plan year 2022 filing to $26M in the plan year 2023 filing.
  • One Gas, Inc. Retirement Plan reported participants fell from 840 in the plan year 2022 filing to 740 in the plan year 2023 filing.
  • One Gas, Inc. Retirement Plan end-of-year assets rose from $769M in the plan year 2022 filing to $796M in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 463561936 · One Gas, Inc. PY 2023 · Defined Benefit (Pension)

One Gas, Inc. Retirement Plan · $796M · 740 · 98th

  • IND $796M
  • EOY 740
  • 5500 98th
  • ASSETS Defined Benefit (Pension)
  • PCT near Lincoln National Corporation Retirement Plan for Employees Hired Prior to January 1 2008
  • EIN ind #625

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. Retirement Plan in the asset neighbourhood

Barnabas Health Retirement Income PlanBarnabas Health Retirement I…$797MOne Gas, Inc. Retirement Plan$796MLincoln National Corporation Retirement Plan for Employees Hired Prior to January 1 2008Lincoln National Corporation…$795MFox Pension Plan$794MBaystate Health, Inc. Retirement ProgramBaystate Health, Inc. Retire…$791M
End-of-year total assets ($M) among One Gas, Inc. Retirement Plan and nearest nationwide Defined Benefit (Pension) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$769M
Net Assets (End of Year)$795M
Net Income$26M
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 Defined Benefit (Pension) Plans in Oklahoma

Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.

One Gas, Inc. Retirement Plan vs. nearby Defined Benefit (Pension) plans in Oklahoma, assets vs. participants Scatter plot of 6 data points. 01000200030004000 00.511.52 Total assets ($B) Participants One Gas, Inc. Retirement Plan, Total assets ($B): 0.795535 · Participants: 740One Gas, Inc. Retirement PlanPipeline Industry Pension Fund, Total assets ($B): 1.550776271 · Participants: 1904Pipeline Industry Pension FundWilliams Pension Plan, Total assets ($B): 1.33243367 · Participants: 3588Williams Pension PlanRetirement Plan for Employees of Devon Energy Corporation, Total assets ($B): 0.480356058 · Participants: 171Retirement Plan for Employees of Devon Energy CorporationIntegris Health, Inc. Retirement Plan a, Total assets ($B): 0.422772766 · Participants: 1145Integris Health, Inc. Retirement Plan aRetirement Plan of American Fidelity Group, Total assets ($B): 0.349355722 · Participants: 1638Retirement Plan of American Fidelity Group
One Gas, Inc. Retirement Plan vs. nearby Defined Benefit (Pension) plans in Oklahoma, assets vs. participants
Compare One Gas, Inc. Retirement Plan side-by-side with 3 peers →

One Gas, Inc. Retirement Plan's out-of-state Defined Benefit (Pension) peers by assets and headcount

Outside Oklahoma, the nearest Defined Benefit (Pension) by assets is Lincoln National Corporation Retirement Plan for Employees Hired Prior to January 1 2008 in PA ($795M); by covered participants it is Nintendo of America Inc. Defined Benefit Retirement Plan in WA (740 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($796M here).

Similar participant headcount

Nearest other-state filings by covered participants (740 participants); asset peers above are excluded.

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. Retirement Plan assets move in 2023? ▼
One Gas, Inc. Retirement Plan edged up modestly - up 3.4% during 2023, from $769M to $796M. Reported net income was $26M.
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. Retirement Plan rank by assets among Form 5500 filers? ▼
One Gas, Inc. Retirement 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 Defined Benefit (Pension) plans are similar in size to One Gas, Inc. Retirement Plan? ▼
Among Defined Benefit (Pension) plans in other states, the closest by assets is Lincoln National Corporation Retirement Plan for Employees Hired Prior to January 1 2008 in PA ($795M, 2,068 participants).
Which Defined Benefit (Pension) plans cover a similar participant headcount to One Gas, Inc. Retirement Plan? ▼
Among Defined Benefit (Pension) plans in other states, the closest by covered participants is Nintendo of America Inc. Defined Benefit Retirement Plan in WA (740 participants, $197M 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.