401(k) · DOL Form 5500 · 2023

Father Bill's & Mainspring, Inc. 401(k) Plan

Data updated 2026-08-25

$5M
Total assets Small plan by assets
247
Participants Below avg headcount
45th
Percentile by assets National rank
$20,967
Avg per participant Low balance/head
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Official DOL plan name: Father Bill's & Mainspring, Inc. 401(k) Plan · Sponsored by Father Bill's & Mainspring, Inc. · Massachusetts · Other Services

$5M in assets, 247 participants

Father Bill's & Mainspring, Inc.'s Father Bill's & Mainspring, Inc. 401(k) Plan reported $5M in total assets and 247 participants in its 2023 DOL Form 5500 filing, ranking in the 45th 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.

  • #5,211 in Other Services (7,857 peers)

Coverage in Massachusetts

Father Bill's & Mainspring, Inc. 401(k) Plan covers 247 participants in Massachusetts, about 38% of the average Massachusetts filer (state average ~659 per filing). Assets: $5M.

#5,211
in Other Services (7,857 peers)
+28.6%
assets growth YoY

Father Bill's & Mainspring, Inc. 401(k) Plan's mid-pack asset rank among Other Services and all filers

Father Bill's & Mainspring, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$5,178,923 45th percentile higher than 45% of 127,068 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 2023

Father Bill's & Mainspring, Inc. 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Father Bill's & Mainspring, Inc. 401(k) Plan sits mid-pack in the medium band (247 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Father Bill's & Mainspring, Inc. 401(k) Plan reported net income rose from -$357K in the plan year 2022 filing to $1M in the plan year 2023 filing.
  • Father Bill's & Mainspring, Inc. 401(k) Plan end-of-year assets rose from $4M in the plan year 2022 filing to $5M in the plan year 2023 filing.
  • Father Bill's & Mainspring, Inc. 401(k) Plan reported participants rose from 231 in the plan year 2022 filing to 247 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Published 5500 schedule card

Filing strip 222538039 · Father Bill's & Mainspring, Inc. PY 2023 · 401(k)

Father Bill's & Mainspring, Inc. 401(k) Plan · $5M · 247 · 45th

  • BOOK $5M
  • BOOK 247
  • BOOK 45th
  • BOOK 401(k)
  • BOOK near Braun Linen Service, Inc.401(k) Profit Sharing Plan
  • BOOK ind #5211

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 Other Services retirement plans → · Plans in Massachusetts →

Father Bill's & Mainspring, Inc. 401(k) Plan in the asset neighbourhood

Father Bill's & Mainspring, Inc. 401(k) PlanFather Bill's & Mainspring, …$5MBraun Linen Service, Inc.401(k) Profit Sharing PlanBraun Linen Service, Inc.401…$5M165(e) Savings Deferred Retirement Plan for Ericsson Caribbean Employees165(e) Savings Deferred Reti…$5MAurora Products, Inc Retirement Savings PlanAurora Products, Inc Retirem…$5MWayne Asphalt & Construction Co., Inc. Employee Benefit PlanWayne Asphalt & Construction…$5M
End-of-year total assets ($M) among Father Bill's & Mainspring, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$4M
Net Assets (End of Year)$5M
Net Income$1M
Employer EIN222538039
Plan Effective Date2003-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Father Bill's & Mainspring, Inc.)

Sponsor-wide plan assets over time

All Father Bill's & Mainspring, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$6M 59.85794304308407% vs 2022
2024 filing year
$3M$4M$5M$6M$7M 202220232024 $4.03M $6.44M ▲ +59.8%
Year Plans Participants Total Assets
2022 1 231 $4M
2023 1 247 $5M
2024 1 285 $6M

Nearby 401(k) Plans in Massachusetts

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

Father Bill's & Mainspring, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Father Bill's & Mainspring, Inc. 401(k) Plan, Total assets ($B): 0.005178923 · Participants: 247Father Bill's & Mainspring, Inc. 401(k) PlanFidelity Retirement Savings Plan, Total assets ($B): 28.649852331 · Participants: 62289Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 10.556596852 · Participants: 37052Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 6.829912863 · Participants: 14094Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 5.786107181 · Participants: 19881Boston Scientific Corporation 401(k) Retirement Savings PlanPhilips North America 401(k) Plan, Total assets ($B): 5.779286156 · Participants: 19120Philips North America 401(k) Plan
Father Bill's & Mainspring, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Father Bill's & Mainspring, Inc. 401(k) Plan side-by-side with 3 peers →

Father Bill's & Mainspring, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Braun Linen Service, Inc.401(k) Profit Sharing Plan in CA ($5M); by covered participants it is Firstcapital Bank of Texas, N. a. in TX (247 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (247 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Father Bill's & Mainspring, Inc. 401(k) Plan assets move in 2023? ▼
Father Bill's & Mainspring, Inc. 401(k) Plan grew sharply - up 28.6% during 2023, from $4M to $5M. Reported net income was $1M.
How have Father Bill's & Mainspring, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Father Bill's & Mainspring, Inc.'s sponsor-wide assets grew 59.9%, from $4M to $6M.
Which 401(k) plans are similar in size to Father Bill's & Mainspring, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Braun Linen Service, Inc.401(k) Profit Sharing Plan in CA ($5M, 29 participants).
Which 401(k) plans cover a similar participant headcount to Father Bill's & Mainspring, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Firstcapital Bank of Texas, N. a. in TX (247 participants, N/A in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 222538039.

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.