Profit Sharing · DOL Form 5500 · 2024

W. B. Mason Company Retirement 401(k) Plan & Trust

Data updated 2026-05-15

$205M
Total assets
2,462
Participants
94th
Percentile by assets
$83,230
Avg per participant

Sponsored by W. B. Mason Co. Inc. · Massachusetts · Retail Trade

What the 2024 filing shows

W. B. Mason Company Retirement 401(k) Plan & Trust holds $205M for 2,462 participants - about $83,230 per participant, in the top 10% of all filed plans by assets, up 11.6% over the 2024 plan year.

$205M
total plan assets (2024 EOY)
2,462
covered participants
94th
percentile by assets (of 116,472 plans)
$83,230
avg assets per participant
Industry
Retail Trade

Profit Sharing · DOL Form 5500 · 2024

What the Filing Says About W. B. Mason Company Retirement 401(k) Plan & Trust

W. B. Mason Company Retirement 401(k) Plan & Trust is a Profit Sharing retirement plan sponsored by W. B. Mason Co. Inc., headquartered in Massachusetts. According to the U.S. Department of Labor's 2024 Form 5500 filing, the plan reports $205M in total end-of-year assets and covers 2,462 participants across the Retail Trade industry. The sponsor's EIN on file with the U.S. Department of Labor is 042455641, and the plan has been effective since 1988-09-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets grew at a solid clip from $184M at the beginning of 2024 to $205M at year-end - up 11.6%. Net assets (after liabilities) closed the year at $205M, with reported net income of $21M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Across the 3 plan years W. B. Mason Co. Inc. has on file with PlainRetire (2022-2024), sponsor-wide plan assets have moved from $156M to $205M, a gain of 31.1%, while reported participants moved from 2,820 to 2,462 (-12.7%). The strongest year on file by total sponsor assets was 2024 at $205M; the softest was 2022 at $156M. Year-by-year, sponsor-wide filings show: 2022 - $156M in assets across 1 plan covering 2,820 participants; 2023 - $184M in assets across 1 plan covering 2,503 participants; 2024 - $205M in assets across 1 plan covering 2,462 participants.

By assets, W. B. Mason Company Retirement 401(k) Plan & Trust outranks 94% of the 116,472 plans that filed a Form 5500 for the 2024 plan year, and holds roughly 2.0x the national average plan size of $100M and 730 average participants.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows, a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.

How the percentile is calculated: we count every plan that filed a 2024 Form 5500 with a reported end-of-year asset figure (116,472 plans), rank W. B. Mason Company Retirement 401(k) Plan & Trust against all of them by total assets, and report the share of those plans it outranks. A plan reporting no asset figure for the year is excluded from the ranking rather than assumed to be zero.

Financial Summary (2024)

Total Assets (Beginning of Year)$184M
Total Assets (End of Year)$205M
Net Assets (End of Year)$205M
Net Income$21M
Plan TypeProfit Sharing
Employer EIN042455641
Plan Effective Date1988-09-01
Filing StatusFILING RECEIVED

Sponsor Plan History (W. B. Mason Co. Inc.)

Year Plans Participants Total Assets
2022 1 2,820 $156M
2023 1 2,503 $184M
2024 1 2,462 $205M

Nearby Profit Sharing Plans in Massachusetts

Peer Profit Sharing plans, same state, same plan type, ranked by total assets.

Frequently Asked Questions

How much money is in the W. B. Mason Company Retirement 401(k) Plan & Trust?
As of the 2024 Form 5500 filing, W. B. Mason Company Retirement 401(k) Plan & Trust holds $205M in total assets with 2,462 participants. It is sponsored by W. B. Mason Co. Inc..
What type of plan is W. B. Mason Company Retirement 401(k) Plan & Trust?
W. B. Mason Company Retirement 401(k) Plan & Trust is a Profit Sharing plan. It has been effective since 1988-09-01. The plan is filed with the U.S. Department of Labor under EIN 042455641.
Who sponsors the W. B. Mason Company Retirement 401(k) Plan & Trust?
W. B. Mason Company Retirement 401(k) Plan & Trust is sponsored by W. B. Mason Co. Inc., located in Massachusetts. The sponsor's EIN is 042455641 and the plan operates in the Retail Trade industry.
How did W. B. Mason Company Retirement 401(k) Plan & Trust perform in 2024?
W. B. Mason Company Retirement 401(k) Plan & Trust grew at a solid clip - up 11.6% during 2024, moving from $184M to $205M in total assets. Net income was $21M.

What this filing means

Ways to act on W. B. Mason Company Retirement 401(k) Plan & Trust's numbers.

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 042455641.

Reference: IRS Publication 560, Retirement Plans for Small Business, contribution-limit rules.

Reference: IRS Publication 590-B, Distributions from IRAs, RMD rules under SECURE Act 2.0.

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

Every figure on PlainRetire is rendered directly from the Department of Labor's Form 5500 annual return filings, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-15.