401(k) · DOL Form 5500 · 2023

Sound Seal, Inc. 401(k) Plan

Data updated 2026-08-25

$9M
Total assets Small plan by assets: 249
Participants Below avg headcount: 55th
Percentile by assets National rank: $34,226
Avg per participant Low balance/head

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Official DOL plan name: Sound Seal, Inc. 401(k) Plan · Sponsored by Sound Seal, Inc. · Massachusetts · Manufacturing

$9M in assets, 249 participants

Sound Seal, Inc.'s Sound Seal, Inc. 401(k) Plan reported $9M in total assets and 249 participants in its 2023 DOL Form 5500 filing, ranking in the 55th 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.

#7,591 in Manufacturing (18,722 peers)

Coverage in Massachusetts

Sound Seal, Inc. 401(k) Plan covers 249 participants in Massachusetts, about 38% of the average Massachusetts filer (state average ~659 per filing). Assets: $9M.

#7,591
in Manufacturing (18,722 peers): +20.7%
assets growth YoY

Sound Seal, Inc. 401(k) Plan's mid-pack asset rank among Manufacturing and all filers

Sound Seal, Inc. 401(k) Plan vs every filed plan by assets

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

$8,522,279 Top 45% higher than 55% of 127,068 filed plans

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

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Sound Seal, 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. Sound Seal, Inc. 401(k) Plan sits mid-pack in the medium band (249 participants).

Micro (1-10) 35,718 filings (27%) Small (11-100) 27,089 filings (21%) Medium (101-1,000) 55,445 filings (43%) Large (1,001-10,000) 10,273 filings (8%) Mega (10,000+) 1,374 filings (1%)

Sound Seal, Inc. 401(k) Plan reported net income rose from -$1M in the plan year 2022 filing to $1M in the plan year 2023 filing.
Sound Seal, Inc. 401(k) Plan end-of-year assets rose from $7M in the plan year 2022 filing to $9M in the plan year 2023 filing.
Sound Seal, Inc. 401(k) Plan reported participants rose from 208 in the plan year 2022 filing to 249 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 464283000 · Sound Seal, Inc. PY 2023 · 401(k)

Sound Seal, Inc. 401(k) Plan · $9M · 249 · 55th

PCT $9M
EIN 249
RANK 55th
PHOTO 401(k)
IND near Msc Cruises (USA) LLC 401(k) Plan
EOY ind #7591

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 Manufacturing retirement plans → · Plans in Massachusetts →

End-of-year total assets ($M) among Sound Seal, 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)	$7M
Net Assets (End of Year)	$9M
Net Income	$1M
Employer EIN	464283000
Plan Effective Date	1983-12-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Sound Seal, Inc.)

Latest sponsor-wide plan assets: $11M 56.82608006162072% vs 2022; 2024 filing year

Year	Plans	Participants	Total Assets
2022	1	208	$7M
2023	1	249	$9M
2024	1	204	$11M

Nearby 401(k) Plans in Massachusetts

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

Sound Seal, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Fidelity Retirement Savings Plan $28.6B · 62,289
Liberty Mutual 401(k) Plan $10.6B · 37,052
Massachusetts Institute of Technology Supplemental 401(k) Plan $6.8B · 14,094
Boston Scientific Corporation 401(k) Retirement Savings Plan $5.8B · 19,881
Philips North America 401(k) Plan $5.8B · 19,120

Compare Sound Seal, Inc. 401(k) Plan side-by-side with 3 peers →

Sound Seal, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Msc Cruises (USA) LLC 401(k) Plan in FL ($9M); by covered participants it is Millennium Rehab & Consulting Group, Inc. 401(k) Plan in IA (249 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($9M here).

Msc Cruises (USA) LLC 401(k) Plan (FL) $9M · 262
Oostburg Concrete Products, Inc. 401(k) Plan (WI) $9M · 118
Reed-Lane, Inc. Employees Profit Sharing Plan (NJ) $9M · 151
Interstate Rock Products, Inc. 401(k) Profit Sharing Plan (UT) $9M · 131

Similar participant headcount

Nearest other-state filings by covered participants (249 participants); asset peers above are excluded.

Millennium Rehab & Consulting Group, Inc. 401(k) Plan (IA) 249 · 0 off
Essa Bank & Trust 401(k) Plan (PA) 249 · 0 off
Len Busch Roses 401(k) Retirement Plan (MN) 249 · 0 off
Northstar Ems, Inc. 401(k) Profit Sharing Plan (AL) 249 · 0 off

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 Sound Seal, Inc. 401(k) Plan assets move in 2023? ▼

Sound Seal, Inc. 401(k) Plan grew sharply - up 20.7% during 2023, from $7M to $9M. Reported net income was $1M.

How have Sound Seal, Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Sound Seal, Inc.'s sponsor-wide assets grew 56.8%, from $7M to $11M.

Which 401(k) plans are similar in size to Sound Seal, Inc. 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by assets is Msc Cruises (USA) LLC 401(k) Plan in FL ($9M, 262 participants).

Which 401(k) plans cover a similar participant headcount to Sound Seal, Inc. 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by covered participants is Millennium Rehab & Consulting Group, Inc. 401(k) Plan in IA (249 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 464283000.