401(k) · DOL Form 5500 · 2024

Old Second National Bank 401(k) Plan

Data updated 2026-08-25

$34M
Total assets Below avg plan size
637
Participants Below avg headcount
79th
Percentile by assets National rank
$54,055
Avg per participant Low balance/head
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Official DOL plan name: Old Second National Bank Pooled Employer Plan · Sponsored by Old Second National Bank · Illinois · Finance & Insurance

$34M in assets, 637 participants

Old Second National Bank's Old Second National Bank Pooled Employer Plan reported $34M in total assets and 637 participants in its 2024 DOL Form 5500 filing, ranking in the 79th 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.

  • #5,789 in Finance & Insurance (8,549 peers)

Where Old Second National Bank Pooled Employer Plan sits by assets

Old Second National Bank Pooled Employer Plan sits in the top quartile of all filed plans by assets, $34M for 637 participants (~$54,055/participant), up 17.0% in 2024.

#5,789
in Finance & Insurance (8,549 peers)
+17.0%
assets growth YoY
0.3×
vs typical plan assets (national mean)

Old Second National Bank Pooled Employer Plan's outsized position by total assets

Old Second National Bank Pooled Employer Plan vs every filed plan by assets

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

$34,433,210 Top 21% higher than 79% 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

Old Second National Bank Pooled Employer 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. Old Second National Bank Pooled Employer Plan sits mid-pack in the medium band (637 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Old Second National Bank Pooled Employer Plan reported net income rose from $4M in the plan year 2023 filing to $6M in the plan year 2024 filing.
  • Old Second National Bank Pooled Employer Plan reported participants rose from 454 in the plan year 2023 filing to 637 in the plan year 2024 filing.
  • Old Second National Bank Pooled Employer Plan end-of-year assets rose from $29M in the plan year 2023 filing to $34M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Plan-year Form 5500 strip

Filing strip 361577458 · Old Second National Bank PY 2024 · 401(k)

Old Second National Bank Pooled Employer Plan · $34M · 637 · 79th

  • EBSA $34M
  • PART 637
  • TYPE 79th
  • NET 401(k)
  • BOOK near New England Life Flight, Inc. Dba Boston Medflight 401(k) Plan
  • VS-ST ind #5789

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 Finance & Insurance retirement plans → · Plans in Illinois →

Old Second National Bank Pooled Employer Plan in the asset neighbourhood

Retirement Savings Plan for Employees of Eramet Marietta, Inc.Retirement Savings Plan for …$34MOld Second National Bank Pooled Employer PlanOld Second National Bank Poo…$34MNew England Life Flight, Inc. Dba Boston Medflight 401(k) PlanNew England Life Flight, Inc…$34MGiant Cement Holding, Inc. 401(k) PlanGiant Cement Holding, Inc. 4…$34MEncoura Profit Sharing/401(k) PlanEncoura Profit Sharing/401(k…$34M
End-of-year total assets ($M) among Old Second National Bank Pooled Employer Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$29M
Net Assets (End of Year)$34M
Net Income$6M
Employer EIN361577458
Plan Effective Date2022-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Old Second National Bank)

Sponsor-wide plan assets over time

All Old Second National Bank plans reported in each filing year

Latest sponsor-wide plan assets
$34M 149.08579999688942% vs 2022
2024 filing year
$10M$20M$30M$40M 202220232024 $13.8M $34.4M ▲ +149.1%
Year Plans Participants Total Assets
2022 1 16 $14M
2023 1 454 $29M
2024 1 637 $34M

Nearby 401(k) Plans in Illinois

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

Old Second National Bank Pooled Employer Plan vs. nearby 401(k) plans in Illinois, assets vs. participants Scatter plot of 6 data points. -1000000100000200000300000 -50510152025 Total assets ($B) Participants Old Second National Bank Pooled Employer Plan, Total assets ($B): 0.03443321 · Participants: 637Old Second National Bank Pooled Employer PlanAccenture United States 401(k) Match and Savings Plan, Total assets ($B): 21.302643276 · Participants: 66965Accenture United States 401(k) Match and Savings PlanState Farm 401(k) Savings Plan, Total assets ($B): 19.010099056 · Participants: 63297State Farm 401(k) Savings PlanUnited Airlines Pilot Retirement Account Plan, Total assets ($B): 16.835964452 · Participants: 16659United Airlines Pilot Retirement Account PlanAbbott Laboratories Stock Retirement Plan, Total assets ($B): 15.755668 · Participants: 38229Abbott Laboratories Stock Retirement PlanWalgreens Retirement Savings Plan, Total assets ($B): 14.535873337 · Participants: 233635Walgreens Retirement Savings Plan
Old Second National Bank Pooled Employer Plan vs. nearby 401(k) plans in Illinois, assets vs. participants
Compare Old Second National Bank Pooled Employer Plan side-by-side with 3 peers →

Old Second National Bank Pooled Employer Plan's out-of-state 401(k) peers by assets and headcount

Outside Illinois, the nearest 401(k) by assets is New England Life Flight, Inc. Dba Boston Medflight 401(k) Plan in MA ($34M); by covered participants it is Metrolina Greenhouses, Inc. Profit Sharing Plan in NC (637 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (637 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 Old Second National Bank Pooled Employer Plan assets move in 2024? ▼
Old Second National Bank Pooled Employer Plan grew sharply - up 17.0% during 2024, from $29M to $34M. Reported net income was $6M.
How have Old Second National Bank plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Old Second National Bank's sponsor-wide assets grew 149.1%, from $14M to $34M.
Where does Old Second National Bank Pooled Employer Plan rank by assets among Form 5500 filers? ▼
Old Second National Bank Pooled Employer Plan ranks in the 79th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Old Second National Bank Pooled Employer Plan? ▼
Among 401(k) plans in other states, the closest by assets is New England Life Flight, Inc. Dba Boston Medflight 401(k) Plan in MA ($34M, 196 participants).
Which 401(k) plans cover a similar participant headcount to Old Second National Bank Pooled Employer Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Metrolina Greenhouses, Inc. Profit Sharing Plan in NC (637 participants, $73M 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 361577458.

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.