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Form 5500 · Retirement plan · MADISON, WI

RESEARCH PRODUCTS CORPORATION

The filing calls this plan RESEARCH PRODUCTS CORPORATION PRODUCTION STAFF 401(K) SAVINGS PLAN.

RESEARCH PRODUCTS CORPORATION of MADISON, WI's retirement plan holds 1 insurance-company contract (annuities or guaranteed-interest accounts), disclosed on Schedule A of its Form 5500. These are investment and funding contracts, not group health or welfare coverage. No medical, dental or life benefit is reported on this filing.

Agent of record (Schedule A)
Not disclosed
Contract year ends
Decemberas filed for plan year 2024

Sourced from U.S. DOL EFAST2 Form 5500 · EIN 39-0566098 · plan 004 · plan year 2024, filed Oct 9, 2025

Participants at the start of the year
480
Contracts on file
1
Contract value
$1,380,267
Plan year end
December

Plan brief

Schedule A lists 1 insurance contract held by the plan — an annuity, a guaranteed-interest account or a similar funding vehicle, with EMPOWER ANNUITY INSURANCE COMPANY OF AMERICA.

The contracts held $1,380,267 at the end of the plan year, as reported on Schedule A.

The filing discloses no agent commission on these contracts.

A Schedule A is filed for a retirement plan when plan assets sit in an insurance company contract. It reports the contract's balances and any agent commission. It does not report a health, dental or life premium, and it does not give a group renewal date.

The contract year ended in December.

Schedule A insurance contracts

CarrierContract typeCoveredYear endsContract valueCommission
EMPOWER ANNUITY INSURANCE COMPANY OF AMERICAAnnuity / GIC72December$1,380,267$0

Covered = persons covered at policy year end, as filed on Schedule A for that policy — often certificates or one class, not the whole plan. Premium = the filing’s own premium/charges figure; “—” means not credibly reported.

See the filing at the Department of Labor

Administrator and service providers

Plan administrator on the filing
RESEARCH PRODUCTS CORPORATION
EIN 39-0566098

The plan administrator is from line 3a of the main form. We publish company names only.

Reported to OSHA

Reported to OSHA for 2025: 32 employees, 0 recordable cases, 0 days away from work.

EmployeesThe company's own average for the year
32
Hours worked
55,540
Recordable cases
0
Days away from work
0

Source: OSHA Injury Tracking Application establishment data, 2025.

What the plan holds

Plan assets at year end
$28,275,856
Paid out in benefits
$4,748,070
Participants at the start of the year
480
Participants with account balances
496

Sourced from U.S. DOL EFAST2 Form 5500 · Schedule H

Who runs the plan

Independent accountantEIN 42-0714325
RSM US LLP
Accountant's opinion (Schedule H, line 3a)
Unmodified

From Schedule H of this filing.

We can name the recordkeeper and the auditor for large plans, the ones that file a Schedule C or a Schedule H. Smaller plans do not have to report either, so for most 401(k) plans in the country that information is not public anywhere.

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