401(k) · DOL Form 5500 · 2022

Diamond Materials LLC 401(k) Plan

Data updated 2026-08-25

$8M
Total assets Small plan by assets
271
Participants Below avg headcount
60th
Percentile by assets National rank
$29,312
Avg per participant Low balance/head
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Official DOL plan name: Diamond Materials 401(k) Plan · Sponsored by Diamond Materials LLC · Delaware · Construction

$8M in assets, 271 participants

Diamond Materials LLC's Diamond Materials 401(k) Plan reported $8M in total assets and 271 participants in its 2022 DOL Form 5500 filing, ranking in the 60th 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.

  • #5,941 in Construction (9,927 peers)

Diamond Materials LLC multi-year trail

Diamond Materials LLC's plans moved +44.7% in assets from 2022 to 2024; this filing shows Diamond Materials 401(k) Plan at $8M / 271 participants.

#5,941
in Construction (9,927 peers)
-9.1%
assets change YoY

The plan reported a net loss of $791K for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Diamond Materials 401(k) Plan's mid-pack asset rank among Construction and all filers

Diamond Materials 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$7,943,568 Top 40% higher than 60% of 139,123 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 2022

Diamond Materials 401(k) Plan among mid-size filed plans by headcount

Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Diamond Materials 401(k) Plan sits mid-pack in the medium band (271 participants).

EBSA filing schedule strip

Filing strip 510373659 · Diamond Materials LLC PY 2022 · 401(k)

Diamond Materials 401(k) Plan · $8M · 271 · 60th

  • EIN $8M
  • RANK 271
  • PHOTO 60th
  • IND 401(k)
  • EOY near Silver Reef Casino 401(k) Plan
  • 5500 ind #5941

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 Construction retirement plans → · Plans in Delaware →

Diamond Materials 401(k) Plan in the asset neighbourhood

Diamond Materials 401(k) Plan$8MSilver Reef Casino 401(k) PlanSilver Reef Casino 401(k) Pl…$8MTonal Systems, Inc. 401(k)$8MGrossman, Tucker, Perreault and Pfleger, PLLC Profit Sharing PlanGrossman, Tucker, Perreault …$8MSteves & Sons Employees 401(k) Profit Sharing PlanSteves & Sons Employees 401(…$8M
End-of-year total assets ($M) among Diamond Materials 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Diamond Materials LLC multi-year asset trail

Sponsor-wide plan assets over time

All Diamond Materials LLC plans reported in each filing year

Latest sponsor-wide plan assets
$11M 44.723177292622154% vs 2022
2024 filing year
$6M$8M$10M$12M 202220232024 $7.94M $11.5M ▲ +44.8%
Year Plans Participants Total Assets
2022 1 271 $8M
2023 1 304 $10M
2024 1 292 $11M

Diamond Materials LLC filing trail (2022)

Total Assets (Beginning of Year)$9M
Net Assets (End of Year)$8M
Net Income-$791K
Employer EIN510373659
Plan Effective Date1997-03-01
Filing StatusFILING RECEIVED

Nearby 401(k) Plans in Delaware

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

Diamond Materials 401(k) Plan vs. nearby 401(k) plans in Delaware, assets vs. participants Scatter plot of 6 data points. -5000050001000015000 -202468 Total assets ($B) Participants Diamond Materials 401(k) Plan, Total assets ($B): 0.007943568 · Participants: 271Diamond Materials 401(k) PlanRetirement Savings Plan, Total assets ($B): 6.556844337 · Participants: 9866Retirement Savings PlanAstrazeneca Savings and Security Plan, Total assets ($B): 6.080434696 · Participants: 13301Astrazeneca Savings and Security PlanDupont Retirement Savings Plan, Total assets ($B): 2.963536374 · Participants: 11033Dupont Retirement Savings PlanWl Gore & Associates, Inc. 401(k) Plan, Total assets ($B): 1.437172534 · Participants: 7952Wl Gore & Associates, Inc. 401(k) PlanAshland Employee Savings Plan, Total assets ($B): 1.201689819 · Participants: 1887Ashland Employee Savings Plan
Diamond Materials 401(k) Plan vs. nearby 401(k) plans in Delaware, assets vs. participants
Compare Diamond Materials 401(k) Plan side-by-side with 3 peers →

Diamond Materials 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Delaware, the nearest 401(k) by assets is Silver Reef Casino 401(k) Plan in WA ($8M); by covered participants it is Hutton Corporation 401(k) Plan in KS (271 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (271 participants); asset peers above are excluded.

DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Diamond Materials 401(k) Plan assets move in 2022? ▼
Diamond Materials 401(k) Plan pulled back noticeably - down 9.1% during 2022, from $9M to $8M. Reported net income was -$791K.
How have Diamond Materials LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Diamond Materials LLC's sponsor-wide assets grew 44.7%, from $8M to $11M.
Which 401(k) plans are similar in size to Diamond Materials 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Silver Reef Casino 401(k) Plan in WA ($8M, 489 participants).
Which 401(k) plans cover a similar participant headcount to Diamond Materials 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Hutton Corporation 401(k) Plan in KS (271 participants, $17M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 510373659.

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.