401(k) · DOL Form 5500 · 2024

Mastec, Inc. 401(k) Plan

Data updated 2026-08-25

$736M
Total assets Above avg plan size
23,928
Participants Very large workforce
98th
Percentile by assets National rank
$30,761
Avg per participant Low balance/head
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Official DOL plan name: The Mastec, Inc. 401(k) Retirement Plan · Sponsored by Mastec, Inc. · Florida · Construction

$736M in assets, 23,928 participants

Mastec, Inc.'s The Mastec, Inc. 401(k) Retirement Plan reported $736M in total assets and 23,928 participants in its 2024 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.

  • #8,858 in Construction (9,039 peers)

Coverage in Florida

The Mastec, Inc. 401(k) Retirement Plan covers 23,928 participants in Florida, 38x the typical Florida plan (state average ~628 per filing). Assets: $736M.

#8,858
in Construction (9,039 peers)
+24.4%
assets growth YoY
7.4×
vs typical plan assets (national mean)

The Mastec, Inc. 401(k) Retirement Plan's outsized position by total assets

The Mastec, Inc. 401(k) Retirement Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$736,046,667 Top 2% higher than 98% 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

The Mastec, Inc. 401(k) Retirement Plan's mega-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. The Mastec, Inc. 401(k) Retirement Plan is a mega filing (23,928 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • The Mastec, Inc. 401(k) Retirement Plan end-of-year assets rose from $592M in the plan year 2023 filing to $736M in the plan year 2024 filing.
  • The Mastec, Inc. 401(k) Retirement Plan reported net income rose from $134M in the plan year 2023 filing to $144M in the plan year 2024 filing.
  • The Mastec, Inc. 401(k) Retirement Plan reported participants fell from 24,657 in the plan year 2023 filing to 23,928 in the plan year 2024 filing.

See the national 2023→2024 release diff →

EBSA filing schedule strip

Filing strip 650829355 · Mastec, Inc. PY 2024 · 401(k)

The Mastec, Inc. 401(k) Retirement Plan · $736M · 23,928 · 98th

  • EOY $736M
  • EOY 23,928
  • EOY 98th
  • EOY 401(k)
  • EOY near Ebsco Savings and Profit Sharing Plan
  • EOY ind #8858

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 Florida →

The Mastec, Inc. 401(k) Retirement Plan in the asset neighbourhood

Harman International Industries, Incorporated Retirement Savings PlanHarman International Industr…$737MEbsco Savings and Profit Sharing PlanEbsco Savings and Profit Sha…$736MThe Mastec, Inc. 401(k) Retirement PlanThe Mastec, Inc. 401(k) Reti…$736MCdk Global 401(k) Plan$736MHaleon 401(k) Plan$735M
End-of-year total assets ($M) among The Mastec, Inc. 401(k) Retirement Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Florida filing particulars

Total Assets (Beginning of Year)$592M
Net Assets (End of Year)$736M
Net Income$144M
Employer EIN650829355
Plan Effective Date1984-12-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mastec, Inc.)

Sponsor-wide plan assets over time

All Mastec, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$736M 60.97366934517524% vs 2022
2024 filing year
$400M$500M$600M$700M$800M 202220232024 $457M $736M ▲ +61.0%
Year Plans Participants Total Assets
2022 1 19,241 $457M
2023 1 24,657 $592M
2024 1 23,928 $736M

Nearby 401(k) Plans in Florida

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

The Mastec, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in Florida, assets vs. participants Scatter plot of 6 data points. 0100000200000300000400000 -505101520 Total assets ($B) Participants The Mastec, Inc. 401(k) Retirement Plan, Total assets ($B): 0.736046667 · Participants: 23928The Mastec, Inc. 401(k) Retirement PlanL3harris Retirement Savings Plan, Total assets ($B): 16.316786122 · Participants: 40330L3harris Retirement Savings PlanSavings Plan for Employees and Partners of Pwc, Total assets ($B): 13.167098888 · Participants: 51081Savings Plan for Employees and Partners of PwcAdp Totalsource Retirement Savings Plan, Total assets ($B): 9.190044852 · Participants: 310261Adp Totalsource Retirement Savings PlanPublix Super Markets, Inc. 401(k) Smart Plan, Total assets ($B): 8.068866271 · Participants: 197102Publix Super Markets, Inc. 401(k) Smart PlanNextera Energy, Inc. Employee Retirement Savings Plan, Total assets ($B): 5.484619612 · Participants: 16678Nextera Energy, Inc. Employee Retirement Savings Plan
The Mastec, Inc. 401(k) Retirement Plan vs. nearby 401(k) plans in Florida, assets vs. participants
Compare The Mastec, Inc. 401(k) Retirement Plan side-by-side with 3 peers →

Scale composition for The Mastec, Inc. 401(k) Retirement Plan

The Mastec, Inc. 401(k) Retirement Plan reports $736M in end-of-year assets across 23,928 participants (0.006% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.025% of 93,925,755 covered participants) - about $30,761 per participant (22% of the national average assets-per-participant) . Net income for plan year 2024 was $144M.

This plan identity (EIN 650829355, plan #002) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $457M to $736M (+61.0%) while covered participants moved from 19,241 to 23,928 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 19,241 $457M Open filing
2023 24,657 $592M Open filing
2024 · index core 23,928 $736M This page

The Mastec, Inc. 401(k) Retirement Plan's out-of-state 401(k) peers by assets and headcount

Outside Florida, the nearest 401(k) by assets is Ebsco Savings and Profit Sharing Plan in AL ($736M); by covered participants it is The Interpublic Group of Companies, Inc. Savings Plan in NY (24,024 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($736M here).

Similar participant headcount

Nearest other-state filings by covered participants (23,928 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 The Mastec, Inc. 401(k) Retirement Plan assets move in 2024? ▼
The Mastec, Inc. 401(k) Retirement Plan grew sharply - up 24.4% during 2024, from $592M to $736M. Reported net income was $144M.
How have Mastec, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mastec, Inc.'s sponsor-wide assets grew 61.0%, from $457M to $736M.
Where does The Mastec, Inc. 401(k) Retirement Plan rank by assets among Form 5500 filers? ▼
The Mastec, Inc. 401(k) Retirement Plan ranks in the 98th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to The Mastec, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by assets is Ebsco Savings and Profit Sharing Plan in AL ($736M, 3,518 participants).
Which 401(k) plans cover a similar participant headcount to The Mastec, Inc. 401(k) Retirement Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is The Interpublic Group of Companies, Inc. Savings Plan in NY (24,024 participants, $4.1B 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 650829355.

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.