401(k) · DOL Form 5500 · 2023
Martin Marietta Materials, Inc. 401(k) Plan
Data updated 2026-08-25
- $838M
- Total assets Above avg plan size
- 8,839
- Participants Very large workforce
- 98th
- Percentile by assets National rank
- $94,830
- Avg per participant Below avg balance/head
Official DOL plan name: Martin Marietta Savings and Investment Plan · Sponsored by Martin Marietta Materials, Inc. · North Carolina · Mining & Oil Extraction
$838M in assets, 8,839 participants
Martin Marietta Materials, Inc.'s Martin Marietta Savings and Investment Plan reported $838M in total assets and 8,839 participants in its 2023 DOL Form 5500 filing, ranking in the 98th 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.
- #790 in Mining & Oil Extraction (811 peers)
Coverage in North Carolina
Martin Marietta Savings and Investment Plan covers 8,839 participants in North Carolina, 11x the typical North Carolina plan (state average ~819 per filing). Assets: $838M.
- #790
- in Mining & Oil Extraction (811 peers)
- +17.9%
- assets growth YoY
- 8.4×
- vs typical plan assets (national mean)
Martin Marietta Savings and Investment Plan's outsized position by total assets
Martin Marietta Savings and Investment Plan vs every filed plan by assets
End-of-year total assets · plan year 2023 · DOL Form 5500
$838,202,471 Top 2% higher than 98% 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
Martin Marietta Savings and Investment Plan's large-plan peer group by participant headcount
Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Martin Marietta Savings and Investment Plan lands in the large band (8,839 participants).
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Martin Marietta Savings and Investment Plan reported net income rose from -$161M in the plan year 2022 filing to $127M in the plan year 2023 filing.
- Martin Marietta Savings and Investment Plan end-of-year assets rose from $711M in the plan year 2022 filing to $838M in the plan year 2023 filing.
- Martin Marietta Savings and Investment Plan reported participants rose from 8,237 in the plan year 2022 filing to 8,839 in the plan year 2023 filing.
EBSA filing schedule strip
Filing strip 561848578 · Martin Marietta Materials, Inc. PY 2023 · 401(k)
Martin Marietta Savings and Investment Plan · $838M · 8,839 · 98th
- IND $838M
- IND 8,839
- IND 98th
- IND 401(k)
- IND near Howmet Aerospace Hourly Retirement Savings Plan
- IND ind #790
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 Mining & Oil Extraction retirement plans → · Plans in North Carolina →
Martin Marietta Savings and Investment Plan in the asset neighbourhood
North Carolina filing particulars
| Total Assets (Beginning of Year) | $711M |
|---|---|
| Net Assets (End of Year) | $838M |
| Net Income | $127M |
| Employer EIN | 561848578 |
| Plan Effective Date | 1996-10-18 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Martin Marietta Materials, Inc.)
Sponsor-wide plan assets over time
All Martin Marietta Materials, Inc. plans reported in each filing year
- Latest sponsor-wide plan assets
- $2.2B 20.16852587311399% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 2 | 16,651 | $1.8B |
| 2023 | 2 | 17,385 | $2.0B |
| 2024 | 2 | 17,471 | $2.2B |
Nearby 401(k) Plans in North Carolina
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- The Bank of America 401(k) Plan $54.8B · 173,899
- Honeywell 401(k) Plan $15.4B · 40,004
- Duke Energy Retirement Savings Plan $10.4B · 28,121
- Truist Financial Corporation 401(k) Savings Plan $10.1B · 55,480
- Nucor Corporation Profit Sharing and Retirement Savings Plan $8.5B · 24,174
Scale composition for Martin Marietta Savings and Investment Plan
Martin Marietta Savings and Investment Plan reports $838M in end-of-year assets across 8,839 participants (0.007% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.009% of 93,925,755 covered participants) - about $94,830 per participant (69% of the national average assets-per-participant) . Net income for plan year 2023 was $127M.
This plan identity (EIN 561848578, plan #006) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $711M to $903M (+27.0%) while covered participants moved from 8,237 to 8,807 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 8,237 | $711M | Open filing |
| 2023 | 8,839 | $838M | This page |
| 2024 · index core | 8,807 | $903M | Open filing |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Martin Marietta Pension Plan (Defined Benefit (Pension), $1.3B, 8,664 participants)
- Martin Marietta Savings and Investment Plan (401(k), $903M, 8,807 participants)
Martin Marietta Savings and Investment Plan's out-of-state 401(k) peers by assets and headcount
Outside North Carolina, the nearest 401(k) by assets is Howmet Aerospace Hourly Retirement Savings Plan in PA ($839M); by covered participants it is Southern California Gas Company Retirement Savings Plan in CA (8,850 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($838M here).
- Howmet Aerospace Hourly Retirement Savings Plan (PA) $839M · 9,000
- Deferred Profit-Sharing Plan for Hourly Employees (VA) $837M · 1,820
- Markel Group Inc. Retirement Savings Plan (VA) $839M · 3,363
- The Coca-Cola Bottlers' Association 401(k) Retirement Savings Plan (GA) $839M · 19,643
Similar participant headcount
Nearest other-state filings by covered participants (8,839 participants); asset peers above are excluded.
- Southern California Gas Company Retirement Savings Plan (CA) 8,850 · 11 off
- Masco Corporation 401(k) Plan (MI) 8,816 · 23 off
- Iheart Media, Inc. 401(k) Savings Plan (TX) 8,862 · 23 off
- American Multi-Cinema, Inc. 401(k) Savings Plan (KS) 8,869 · 30 off
DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.