401(k) · DOL Form 5500 · 2024

Mainline Information Systems LLC 401(k) Plan

Data updated 2026-08-25

$124M
Total assets Near avg plan size
419
Participants Below avg headcount
92nd
Percentile by assets National rank
$295,306
Avg per participant High balance/head
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Official DOL plan name: Mainline Information Systems 401(k) Plan · Sponsored by Mainline Information Systems LLC · Florida · Professional & Technical Services

$124M in assets, 419 participants

Mainline Information Systems LLC's Mainline Information Systems 401(k) Plan reported $124M in total assets and 419 participants in its 2024 DOL Form 5500 filing, ranking in the 92nd percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #18,758 in Professional & Technical Services (20,173 peers)

Where Mainline Information Systems 401(k) Plan sits by assets

Mainline Information Systems 401(k) Plan sits in the top 10% of all filed plans by assets, $124M for 419 participants (~$295,306/participant), up 13.1% in 2024.

#18,758
in Professional & Technical Services (20,173 peers)
+13.1%
assets growth YoY
1.2×
vs typical plan assets (national mean)

Mainline Information Systems 401(k) Plan's outsized position by total assets

Mainline Information Systems 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$123,733,348 Top 8% higher than 92% of 123,620 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Mainline Information Systems 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mainline Information Systems 401(k) Plan sits mid-pack in the medium band (419 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Mainline Information Systems 401(k) Plan reported participants rose from 357 in the plan year 2023 filing to 419 in the plan year 2024 filing.
  • Mainline Information Systems 401(k) Plan end-of-year assets rose from $109M in the plan year 2023 filing to $124M in the plan year 2024 filing.
  • Mainline Information Systems 401(k) Plan reported net income fell from $16M in the plan year 2023 filing to $14M in the plan year 2024 filing.

See the national 2023→2024 release diff →

DOL schedule card

Filing strip 592960721 · Mainline Information Systems LLC PY 2024 · 401(k)

Mainline Information Systems 401(k) Plan · $124M · 419 · 92nd

  • BOOK $124M
  • BOOK 419
  • BOOK 92nd
  • BOOK 401(k)
  • BOOK near Cardworks, Inc. 401(k) Retirement Plan
  • BOOK ind #18758

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in Florida →

Mainline Information Systems 401(k) Plan in the asset neighbourhood

Gnc Live Well Later 401(k) PlanGnc Live Well Later 401(k) P…$124MCardworks, Inc. 401(k) Retirement PlanCardworks, Inc. 401(k) Retir…$124MMainline Information Systems 401(k) PlanMainline Information Systems…$124MAptean 401(k) Plan$124MGenting USA 401(k) Plan$124M
End-of-year total assets ($M) among Mainline Information Systems 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$109M
Net Assets (End of Year)$124M
Net Income$14M
Employer EIN592960721
Plan Effective Date1997-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mainline Information Systems LLC)

Sponsor-wide plan assets over time

All Mainline Information Systems LLC plans reported in each filing year

Latest sponsor-wide plan assets
$124M 32.4584595850179% vs 2022
2024 filing year
$90M$100M$110M$120M$130M 202220232024 $93.4M $124M ▲ +32.5%
Year Plans Participants Total Assets
2022 1 369 $93M
2023 1 357 $109M
2024 1 419 $124M

Nearby 401(k) Plans in Florida

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Mainline Information Systems 401(k) Plan vs. nearby 401(k) plans in Florida, assets vs. participants Scatter plot of 6 data points. -1000000100000200000300000400000 -505101520 Total assets ($B) Participants Mainline Information Systems 401(k) Plan, Total assets ($B): 0.123733348 · Participants: 419Mainline Information Systems 401(k) PlanL3harris Retirement Savings Plan, Total assets ($B): 16.316786122 · Participants: 40330L3harris Retirement Savings PlanSavings Plan for Employees and Partners of Pwc, Total assets ($B): 13.167098888 · Participants: 51081Savings Plan for Employees and Partners of PwcAdp Totalsource Retirement Savings Plan, Total assets ($B): 9.190044852 · Participants: 310261Adp Totalsource Retirement Savings PlanPublix Super Markets, Inc. 401(k) Smart Plan, Total assets ($B): 8.068866271 · Participants: 197102Publix Super Markets, Inc. 401(k) Smart PlanNextera Energy, Inc. Employee Retirement Savings Plan, Total assets ($B): 5.484619612 · Participants: 16678Nextera Energy, Inc. Employee Retirement Savings Plan
Mainline Information Systems 401(k) Plan vs. nearby 401(k) plans in Florida, assets vs. participants
Compare Mainline Information Systems 401(k) Plan side-by-side with 3 peers →

Mainline Information Systems 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Florida, the nearest 401(k) by assets is Cardworks, Inc. 401(k) Retirement Plan in NY ($124M); by covered participants it is Bayer Built Woodworks, Inc. Retirement Plan in MN (419 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($124M here).

Similar participant headcount

Nearest other-state filings by covered participants (419 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Mainline Information Systems 401(k) Plan assets move in 2024? ▼
Mainline Information Systems 401(k) Plan grew at a solid clip - up 13.1% during 2024, from $109M to $124M. Reported net income was $14M.
How have Mainline Information Systems LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mainline Information Systems LLC's sponsor-wide assets grew 32.5%, from $93M to $124M.
Where does Mainline Information Systems 401(k) Plan rank by assets among Form 5500 filers? ▼
Mainline Information Systems 401(k) Plan ranks in the 92nd percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Mainline Information Systems 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Cardworks, Inc. 401(k) Retirement Plan in NY ($124M, 2,241 participants).
Which 401(k) plans cover a similar participant headcount to Mainline Information Systems 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Bayer Built Woodworks, Inc. Retirement Plan in MN (419 participants, $43M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 592960721.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.