Sts Operating, Inc. 401(k) Plan: Login, Facts & Contact Information

Sts Operating, Inc. 401(k) Plan Facts

Plan name
SUNSOURCE SAVINGS AND INVESTMENT PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
STS OPERATING, INC.
Participants
1,304 (1,124 active employees)
Former employees with a balance
198
Plan assets
$167,507,483 at Dec 31, 2024
Average account balance
$130,763 across 1,281 accounts
Employer contributions
$2,148,445 in plan year 2024 (14% of all contributions)
Recordkeeper
Empower Annuity Insurance Company O
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Dec 1, 1987
✓ 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 Oct 14, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $15.8 million went into the plan in contributions, $2.15 million of it from the employer (14%).
  • $18.5 million was paid out to participants.
  • Investment and other income added $19.3 million.
  • Administrative expenses were $100,543, about $78 per account.

How the Sts Operating, Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
2019814$116.9 million$1.26 million$8.44 million
2020956$138.4 million$1.29 million$7.40 million
2021872$151.4 million$1.27 million$12.5 million
2022867$122.0 million$1.52 million$14.1 million
2023969$151.0 million$1.92 million$10.3 million
20241,304$167.5 million$2.15 million$18.5 million

Sts Operating, Inc. 401(k) Contact Information

Phone
630-317-2723
Mailing address
2301 WINDSOR COURT, ADDISON IL 601011480
Plan sponsor
STS OPERATING, INC.
Employer identification number (EIN)
22-3827595
Plan number
025

Questions about the Sts Operating, Inc. 401(k)

Does Sts Operating, Inc contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $2.15 million, 14% of all contributions.

Does the Sts Operating, Inc 401(k) have automatic enrollment?

Yes. The plan reports automatic enrollment of eligible employees.

How many people are in the Sts Operating, Inc 401(k) plan?

1,304 participants at the start of plan year 2024, 1,124 of them active employees, and 198 former employees who still had money in the plan.

What is the average 401(k) balance at Sts Operating, Inc?

About $130,763 per account: $167.5 million in plan assets across 1,281 accounts with a balance at the end of plan year 2024.

Who manages the Sts Operating, Inc 401(k) accounts?

Empower (listed on the filing as EMPOWER ANNUITY INSURANCE COMPANY O) is the plan's recordkeeper, which is where participants log in to see their balance.

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

Your account stays with Empower 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.

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