How big is Mainline Engineering LLC's plan?

Mainline Engineering LLC's plan reported $426K in assets and 10 participants for 2025.

Original filing (PDF)20260427221129NAL0005081123077

Mainline Engineering LLC

Name: Mainline Engineering LLC — Mainline Engineering LLC, Form 5500 (2025)
Creator: Mainline Engineering LLC
License: https://www.usa.gov/government-works

Form 5500-SF

FILING_RECEIVED

Mainline Engineering LLC 401(k) Plan

401(k) retirement plan · Mainline Engineering LLC's Mainline Engineering LLC 401(k) Plan held $426K in plan assets for 10 participants in 2025.

Active participants

Accounts w/ balance

Plan assets (EOY)

$426K

Net assets (EOY)

$426K

Plan identifiers

Mainline Engineering LLC's EIN is 83-1321004.

EIN 83-1321004

Plan number 001

Plan year 2025

ACK ID 20260427221129NAL0005081123077

Official Form 5500 document

Download the official 2025 Form 5500 (PDF) for Mainline Engineering LLC from the U.S. Department of Labor's EFAST2 system.

Download the official 2025 Form 5500 (PDF)

Plan features

Mainline Engineering LLC's plan includes profit-sharing, ERISA 404(c) participant direction, a 401(k) feature, automatic enrollment, a default investment (QDIA).

Decision-maker contacts

One unlock reveals every key decision-maker — plan signer, CFO, HR & Benefits — with verified email + LinkedIn for MAINLINE ENGINEERING LLC.

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Plan health score

Top-tier plan health

Directional indicator from public Form 5500 data — compliance & integrity, total plan cost, participant health and vendor stack, benchmarked against same-size peers. Not a fiduciary tool. Based on 70% of scoring inputs for this filing.

Compliance & integrity

100

Total plan cost

n/a

Plan health

Vendor & structure

100

Knocking points off