Defined Benefit (Pension) · DOL Form 5500 · 2024

One Gas, Inc. Pension Plan

Data updated 2026-07-24

$726M
Total assets: 670
Participants: 98th
Percentile by assets: $1.1M
Avg per participant

Official DOL plan name: One Gas, Inc. Retirement Plan · Sponsored by One Gas, Inc. · Oklahoma · Utilities

$726M in assets, 670 participants

One Gas, Inc.'s One Gas, Inc. Retirement Plan reported $726M in total assets and 670 participants in its 2024 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.

98th percentile by assets (of 116,472 plans)

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, $726M for 670 participants (~$1.1M/participant), down 8.7% in 2024.

$726M
total plan assets (2024 EOY): 670
covered participants: 98th
percentile by assets (of 116,472 plans): $1.1M
avg assets per participant

The plan reported a net loss of $69M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

One Gas, Inc. Retirement Plan reported net income fell from $26M in the plan year 2023 filing to -$69M in the plan year 2024 filing.
One Gas, Inc. Retirement Plan reported participants fell from 740 in the plan year 2023 filing to 670 in the plan year 2024 filing.
One Gas, Inc. Retirement Plan end-of-year assets fell from $796M in the plan year 2023 filing to $726M in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Oklahoma

Industry

Utilities

One Gas, Inc. Retirement Plan vs the 2024 asset distribution

By assets, One Gas, Inc. Retirement Plan outranks 98% of the 116,472 plans that filed a Form 5500 for the 2024 plan year, and holds roughly 7.3x the national average plan size of $100M (730 average participants).

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)	$796M
Net Assets (End of Year)	$726M
Net Income	-$69M
Employer EIN	463561936
Plan Effective Date	2014-01-01
Filing Status	FILING RECEIVED

Sponsor Plan History (One Gas, Inc.)

Total plan assets by year, all One Gas, Inc. plans on file

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

Pipeline Industry Pension Fund $1.7B · 2,308
Williams Pension Plan $1.4B · 3,357
Retirement Plan for Employees of Devon Energy Corporation $435M · 155
Oneok, Inc. Retirement Plan $336M · 192
Oge Energy Corp. Retirement Plan $281M · 755

Compare One Gas, Inc. Retirement Plan side-by-side with 3 peers →

Similar-Sized Defined Benefit (Pension) Plans Nationally

Defined Benefit (Pension) plans in other states closest to One Gas, Inc. Retirement Plan by total assets, not by location.

The Trane Merged Hourly Pension Plan (NC) $726M · 1,100
National Basketball Association Players' Pension Plan (IN) $725M · 520
Ohio Farmers Insurance Company Pension Plan (OH) $728M · 2,247
Iron Workers Locals 40, 361 & 417 Pension Fund (NY) $729M · 1,891

Frequently Asked Questions

How did One Gas, Inc. Retirement Plan assets move in 2024? ▼

One Gas, Inc. Retirement Plan pulled back noticeably - down 8.7% during 2024, from $796M to $726M. Reported net income was -$69M.

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 116,472 plans that reported assets for plan year 2024 (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 The Trane Merged Hourly Pension Plan in NC ($726M, 1,100 participants).

Next read for One Gas, Inc. Retirement Plan

Scale reading

Ways to act on One Gas, Inc. Retirement Plan's numbers.

By total assets, One Gas, Inc. Retirement Plan ranks in the top 5% of all filed plans by assets. See the largest plans
Compare it side-by-side against 3 similar Defined Benefit (Pension) plans in Oklahoma. Compare plans
One Gas, Inc.'s sponsor-wide assets have grown 9.8% since 2022 across 3 plan years on file. More Utilities plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

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.