One Gas, Inc. 401(k) Plan: Login, Facts & Contact Information

One Gas, Inc. 401(k) Plan Facts

Plan name
ONE GAS, INC. 401(K) PLAN
Plan type
401(k) with employer contributions and profit sharing with a company-stock (ESOP) component
Plan sponsor
ONE GAS, INC.
Participants
4,562 (3,886 active employees)
Former employees with a balance
634
Plan assets
$967,927,000 at Dec 31, 2024
Average account balance
$214,191 across 4,519 accounts
Employer contributions
$30,623,000 in plan year 2024 (50% of all contributions)
Recordkeeper
Fidelity Investments Institutional
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Jan 1, 2014
✓ Employer contributions✓ Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments— Self-directed brokerage window✓ Profit sharing✓ Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Jul 17, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $61.4 million went into the plan in contributions, $30.6 million of it from the employer (50%).
  • $108.0 million was paid out to participants.
  • Investment and other income added $150.8 million.

How the One Gas, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
20193,917$793.8 million$13.9 million$93.9 million
20204,046$719.5 million$15.0 million$108.6 million
20214,077$908.0 million$24.6 million$81.2 million
20224,218$774.2 million$28.1 million$95.8 million
20234,415$863.8 million$30.8 million$80.2 million
20244,562$967.9 million$30.6 million$108.0 million

One Gas, Inc. 401(k) Contact Information

Phone
918-947-7000
Mailing address
P.O. BOX 21049, TULSA OK 74121
Plan sponsor
ONE GAS, INC.
Plan administrator
ONE GAS, INC. BENEFITS COMMITTEE
Employer identification number (EIN)
46-3561936
Plan number
002

Questions about the One Gas, Inc. 401(k)

Does One Gas, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $30.6 million, 50% of all contributions.

Does the One Gas, Inc 401(k) have automatic enrollment?

Yes. The plan reports automatic enrollment of eligible employees.

How many people are in the One Gas, Inc 401(k) plan?

4,562 participants at the start of plan year 2024, 3,886 of them active employees, and 634 former employees who still had money in the plan.

What is the average 401(k) balance at One Gas, Inc?

About $214,191 per account: $967.9 million in plan assets across 4,519 accounts with a balance at the end of plan year 2024.

Who manages the One Gas, Inc 401(k) accounts?

Fidelity NetBenefits (listed on the filing as FIDELITY INVESTMENTS INSTITUTIONAL) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at One Gas, Inc. How do I access my 401(k)?

Your account stays with Fidelity NetBenefits after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

Related Companies
Headquarter: 37 MARKET ST, KENILWORTH, NJ, 07033
Headquarter: 909 MONTREAL CIRCLE, ST. PAUL, MN, 55102
Headquarter: 14201 DALLAS PARKWAY, DALLAS, TX, 75254
Headquarter: PO BOX 15437, WILMINGTON, DE, 198505437
Headquarter: 1000 LOWES BLVD, MOORESVILLE, NC, 28117