401(k) · DOL Form 5500 · 2024

Diamond Materials LLC 401(k) Plan

Data updated 2026-08-25

$11M
Total assets Small plan by assets
292
Participants Below avg headcount
59th
Percentile by assets National rank
$39,370
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

$11M in assets, 292 participants

Diamond Materials LLC's Diamond Materials 401(k) Plan reported $11M in total assets and 292 participants in its 2024 DOL Form 5500 filing, ranking in the 59th 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.

  • #5,148 in Construction (9,039 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 $11M / 292 participants.

#5,148
in Construction (9,039 peers)
+19.2%
assets growth YoY

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 2024 · DOL Form 5500

$11,496,184 Top 41% higher than 59% 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

Diamond Materials 401(k) 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. Diamond Materials 401(k) Plan sits mid-pack in the medium band (292 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Diamond Materials 401(k) Plan end-of-year assets rose from $10M in the plan year 2023 filing to $11M in the plan year 2024 filing.
  • Diamond Materials 401(k) Plan reported net income rose from $2M in the plan year 2023 filing to $2M in the plan year 2024 filing.
  • Diamond Materials 401(k) Plan reported participants fell from 304 in the plan year 2023 filing to 292 in the plan year 2024 filing.

See the national 2023→2024 release diff →

DOL schedule card

Filing strip 510373659 · Diamond Materials LLC PY 2024 · 401(k)

Diamond Materials 401(k) Plan · $11M · 292 · 59th

  • NET $11M
  • BOOK 292
  • VS-ST 59th
  • BOY 401(k)
  • SCH near Sanford Contractors, Inc. Retirement Plan
  • EBSA ind #5148

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$11MSanford Contractors, Inc. Retirement PlanSanford Contractors, Inc. Re…$11MUnlv Medicine 401(k) Plan$11MPueblo Bank & Trust Company 401(k) Plan & TrustPueblo Bank & Trust Company …$11MMago Construction Co., LLC 401(k) Profit Sharing/Savings PlanMago Construction Co., LLC 4…$11M
End-of-year total assets ($M) among Diamond Materials 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

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 (2024)

Total Assets (Beginning of Year)$10M
Net Assets (End of Year)$11M
Net Income$2M
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. -500005000100001500020000 -20246810 Total assets ($B) Participants Diamond Materials 401(k) Plan, Total assets ($B): 0.011496184 · Participants: 292Diamond Materials 401(k) PlanAstrazeneca Savings and Security Plan, Total assets ($B): 8.644002344 · Participants: 17175Astrazeneca Savings and Security PlanRetirement Savings Plan, Total assets ($B): 7.020466008 · Participants: 9658Retirement Savings PlanDupont Retirement Savings Plan, Total assets ($B): 3.411317052 · Participants: 9391Dupont Retirement Savings PlanWl Gore & Associates, Inc. 401(k) Plan, Total assets ($B): 2.009619555 · Participants: 8887Wl Gore & Associates, Inc. 401(k) PlanAshland Employee Savings Plan, Total assets ($B): 1.306775357 · Participants: 1405Ashland 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 Sanford Contractors, Inc. Retirement Plan in NC ($11M); by covered participants it is Aspen Waste Systems, Inc. 401(k) Profit Sharing Plan in MN (292 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (292 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 Diamond Materials 401(k) Plan assets move in 2024? ▼
Diamond Materials 401(k) Plan grew sharply - up 19.2% during 2024, from $10M to $11M. Reported net income was $2M.
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 Sanford Contractors, Inc. Retirement Plan in NC ($11M, 180 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 Aspen Waste Systems, Inc. 401(k) Profit Sharing Plan in MN (292 participants, $13M 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 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.