Kirkhill Aircraft Parts Co. Dba Proponent 401(k) Plan: Login, Facts & Contact Information

Kirkhill Aircraft Parts Co. Dba Proponent 401(k) Plan Facts

Plan name
PROPONENT 401(K) RETIREMENT SAVINGS PLAN
Plan type
401(k) with employer contributions and profit sharing
Plan sponsor
PROPONENT, INC.
Participants
425 (410 active employees)
Former employees with a balance
42
Plan assets
$18,677,779 at Mar 31, 2025
Average account balance
$58,186 across 321 accounts
Recordkeeper
Principal Life Insurance Company
Plan year
Apr 1, 2024 – Mar 31, 2025
Plan established
Apr 1, 2003
✓ 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 (Apr 1, 2024 – Mar 31, 2025), filed Jan 14, 2026. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $1.98 million went into the plan in contributions.
  • $931,265 was paid out to participants.
  • Investment and other income added $721,882.
  • Administrative expenses were $7,040, about $22 per account.

How the Kirkhill Aircraft Parts Co. Dba Proponent 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
2019362$10.5 million$0$1.67 million
2020358$14.3 million—$1.37 million
2021343$14.2 million—$2.22 million
2022340$13.9 million—$1.33 million
2023360$16.9 million—$956,205
2024425$18.7 million—$931,265

Kirkhill Aircraft Parts Co. Dba Proponent 401(k) Contact Information

Phone
714-223-5447
Mailing address
3120 ENTERPRISE ST, BREA CA 928216236
Plan sponsor
PROPONENT, INC.
Employer identification number (EIN)
95-2770000
Plan number
001

Questions about the Kirkhill Aircraft Parts Co. Dba Proponent 401(k)

Does Kirkhill Aircraft Parts Co. Dba Proponent contribute to the 401(k)?

Yes. The plan reports an employer contribution arrangement.

Does the Kirkhill Aircraft Parts Co. Dba Proponent 401(k) have automatic enrollment?

No. The plan does not report automatic enrollment; employees enroll themselves.

How many people are in the Kirkhill Aircraft Parts Co. Dba Proponent 401(k) plan?

425 participants at the start of plan year 2024, 410 of them active employees, and 42 former employees who still had money in the plan.

What is the average 401(k) balance at Kirkhill Aircraft Parts Co. Dba Proponent?

About $58,186 per account: $18.7 million in plan assets across 321 accounts with a balance at the end of plan year 2024.

Who manages the Kirkhill Aircraft Parts Co. Dba Proponent 401(k) accounts?

Principal (listed on the filing as PRINCIPAL LIFE INSURANCE COMPANY) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at Kirkhill Aircraft Parts Co. Dba Proponent. How do I access my 401(k)?

Your account stays with Principal 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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