MasTec, Inc. 401(k): Merrill Lynch, match 4% max
The MasTec, Inc. 401(k) Retirement Plan · MTZ · CIK 15615
Merrill Lynch is the recordkeeper named on the Form 5500 filed for this plan, the company that keeps the account records. Where to log in, and what the filing says.
Maximum employer match, as a share of pay
4%
MasTec, Inc. matches 100% (dollar-for-dollar) of the first 3% of pay, then 50% of the next 2% of pay, for a maximum employer match of 4% of pay.
From the Form 11-K filed June 26, 2026 ↗, covering the plan year ended December 31, 2025. Page data last updated July 28, 2026, when the Form 5500 bulk data was last refreshed. Why filings lag
On this page: what the employer actually paid in · the formula, word for word · when the money becomes yours · who can join · who holds your account · what the plan reports to the DOL · how it compares · what to do next
What MasTec puts in, and what the plan costs
What MasTec put into the plan, per active participant
$1,480
MasTec, Inc. put $1,480 into this plan for each of its 23,943 active participants in plan year 2024. This is the whole employer side of the plan: matching money, profit sharing, non-elective and safe-harbor contributions, and reallocated forfeitures. The Form 5500 does not separate them, so this is what the employer put in and not the match.
MasTec put in less per active participant than 69% of plans with 5,000+ participants in construction. The middle plan in that group of 86 reported $2,564. Construction comes from business code 237100, which MasTec entered on its own Form 5500. Sponsors pick that code themselves, so a code that does not describe what the employer does ranks the plan against the wrong companies.
What this figure cannot separate: how much MasTec pays, and how much it puts in
This is dollars, not a rate. A Form 5500 carries no payroll, so the figure reflects both how much the employer puts in and how much the employer pays: two plans running the same formula report different amounts when one pays better. Crossing the peer group with industry holds most of that difference still, and none of it disappears.
This is one plan year, not an average. A true-up, a plan merger or a one-off contribution moves a single year on its own.
Source: DOL Form 5500 for the plan year ended December 31, 2024, EIN 650829355, plan 002 · DOL EFAST2 ↗
The $1,480 above is the Form 5500 figure for plan year 2024, and it counts every employer dollar on one line. MasTec, Inc. also files a Form 11-K, which states the match formula for plan year 2025: the card below reads $1,980 a year at a $49,500 salary, and the same filing states employer contributions made outside the match. That second figure is what the formula pays one worker on that salary, and not an amount either filing reports. The two figures cover different plan years and measure different things, so neither one is the other one corrected.
What MasTec puts in
$1,980
a year, at a $49,500 salary.
The match paragraph, word for word
“The Plan has a Safe Harbor match, which provides for a match of 100 percent of a participant’s salary deferrals that do not exceed 3 percent of the participant’s compensation plus 50 percent of a participant’s salary deferral between 3 percent and 5 percent of the participant’s compensation. The match is credited on a quarterly basis, in the months of April, July, October of the current year, and January of the following year. The Company’s matching contribution is funded 50 percent in the form of the Company’s common stock, and 50 percent in cash, which is invested in accordance with each participant’s investment directive.”
What you contribute to collect all of it
Contribute at least 5% of your pay to collect the full match.
That is $2,475 a year at a $49,500 salary, and it scales with your own.
Vesting score
100 out of 100
How fast the employer’s money becomes yours. Higher than 48% of the 369 schedules we have scored.
It measures vesting speed and nothing else. It says nothing about the size of the match, what the plan charges, or the funds inside it.
Share of the employer's money that is the worker's at hire and at each of the first 6 anniversaries: 100%, 100%, 100%, 100%, 100%, 100%, 100%. The score is the average of those 7 readings.
Vesting, word for word
“Participants vest immediately in their contributions plus actual earnings thereon and amounts rolled over into the Plan. In addition, all Safe Harbor matching contributions vest immediately.”
The wait before the match starts and the year-end true-up appear above when the filing states them. Neither is part of the score, and a filing that is silent on one of them is not a plan without it.
What the plan costs, against plans of its size
33rd percentile
$39.48 per participant in plan-paid administrative cost, cheaper than 67% of plans with 5,000+ participants.
What is MasTec's 401(k) match formula?
MasTec's 401(k) employer match tops out at 4% of pay. The match is deposited quarterly. A tiered formula pays its best rate on the first slice of pay and less on the next, which is how the rate steps down.
| Match formula | 100% (dollar-for-dollar) of the first 3% of pay |
|---|---|
| then | 50% of the next 2% of pay |
| Maximum employer match | 4% of compensation |
| Deposited | Quarterly |
| Paid in company stock | Yes |
| Other employer contribution | The Plan also allows for a discretionary profit sharing contribution |
At a $90,000 salary, contributing 5% ($4,500) earns the full employer match of $3,600 for the year.
What the filing says, word for word
“The Plan has a Safe Harbor match, which provides for a match of 100 percent of a participant’s salary deferrals that do not exceed 3 percent of the participant’s compensation plus 50 percent of a participant’s salary deferral between 3 percent and 5 percent of the participant’s compensation. The match is credited on a quarterly basis, in the months of April, July, October of the current year, and January of the following year. The Company’s matching contribution is funded 50 percent in the form of the Company’s common stock, and 50 percent in cash, which is invested in accordance with each participant’s investment directive.”
Source: Form 11-K filed June 26, 2026, SEC EDGAR, corroborated by the filing's inline-XBRL facts · SEC ↗
What is MasTec's 401(k) vesting schedule?
MasTec vests the employer match immediately: 100% is yours as soon as it is paid in. Nothing is forfeited when you leave, which is not true of the two schedules that vest over time.
| Employer match vesting | Immediate: employer match is 100% vested when contributed |
|---|---|
| Your own contributions | Immediate: always 100% yours |
| Other employer contributions | Vested interest in the profit sharing contribution account is determined by years of vesting service: 1 year 33.00% vested, 2 years 66.00% vested, 3 years 100.00% vested. |
Vesting, word for word
“Participants vest immediately in their contributions plus actual earnings thereon and amounts rolled over into the Plan. In addition, all Safe Harbor matching contributions vest immediately.”
Source: Form 11-K filed June 26, 2026, SEC EDGAR · SEC ↗
Who can join MasTec's 401(k), and is enrollment automatic?
MasTec's filing does not mention automatic enrollment, which is not the same as the plan having none.
| Plan entry | The Plan is a defined contribution plan covering all eligible employees of MasTec, Inc. and its subsidiaries that elect to participate in the Plan (collectively, the “Company”) who have completed at least one (1) full calendar month of employment. Employees enter the Plan on the first day of the month coinciding with or the next month following the date on which they meet the eligibility requirements. |
|---|---|
| Automatic enrollment | Not mentioned in the filing (not proof of absence) |
Eligibility, word for word
“The Plan is a defined contribution plan covering all eligible employees of MasTec, Inc. and its subsidiaries that elect to participate in the Plan (collectively, the “Company”) who have completed at least one (1) full calendar month of employment. Employees enter the Plan on the first day of the month coinciding with or the next month following the date on which they meet the eligibility requirements.”
Source: Form 11-K filed June 26, 2026, SEC EDGAR · SEC ↗
Who holds your account
Schedule C of the Form 5500 filed for plan year 2024 reports Merrill Lynch, filed as “MERRILL LYNCH, PIERCE, FENNER AND S”. That is the company paid to keep the account records: what is in an account, what went into it, and usually the site a participant signs in to. The trustee that holds the plan’s assets can be a different company, and this filing does not name it.
663 plans on file name Merrill Lynch as their recordkeeper. Of those, the 659 with a computable fee have a median plan-paid cost of $87.18 per participant.
Participants log in at Merrill Benefits OnLine ↗. 401(k) Monitor is not affiliated with Merrill Lynch or with any other recordkeeper, and takes nothing for this link. It is here because that is where the account is.
| Recordkeeper | Merrill Lynch |
|---|---|
| Recordkeeper EIN | 135674085 |
What does the MasTec plan report on Form 5500?
The MasTec plan reported $736.0M in assets and 28,293 participants for plan year 2024.
| Total plan assets | $736,046,667 |
|---|---|
| Participants | 28,293 |
| Plan-paid admin cost per participant | $39.48 |
How that cost compares
This plan pays $39.48 per participant. The median across plans in construction is $166.95, from the 3,310 of 3,507 whose Form 5500 yields a per-participant cost.
The Mastec, Inc. 401(k) Retirement Plan on its Form 5500 filing: fees, providers and financials
How does MasTec's 401(k) match compare?
MasTec, Inc.'s maximum 401(k) match of 4% of pay compares with a median of 4% across the 269 companies in our data with a computable formula.
Employers worth reading next
Of the six employers below, two report the same recordkeeper, three land near MasTec's maximum match and one vests on the same schedule.
Maximum match 3.5% of pay. Same recordkeeper, Merrill Lynch.
Maximum match 5% of pay. Same recordkeeper, Merrill Lynch.
Maximum match 4% of pay, level with MasTec.
Maximum match 4% of pay, level with MasTec.
Maximum match 4% of pay, level with MasTec.
Employer match vests immediately. Vests immediately too, like MasTec.
What can you do next?
- Read the Form 11-K on SEC EDGAR ↗
Form 11-K filed June 26, 2026, SEC EDGAR. Every match fact on this page comes from it.
- Changed jobs? Find an old 401(k) ↗
The Department of Labor's Retirement Savings Lost & Found, a free government database.
- This year's IRS contribution limits ↗
The official deferral and catch-up limits every formula operates under.
Questions this filing answers
What is MasTec, Inc.'s 401(k) match?
MasTec, Inc. matches 100% (dollar-for-dollar) of the first 3% of pay, then 50% of the next 2% of pay, for a maximum employer match of 4% of compensation (plan year ended December 31, 2025).
When does the MasTec, Inc. 401(k) match vest?
Immediate: employer match is 100% vested when contributed.
Does MasTec, Inc.'s 401(k) plan have automatic enrollment?
Not mentioned in the filing (not proof of absence).
Who is the recordkeeper for MasTec, Inc.'s 401(k)?
Merrill Lynch is named as the recordkeeper on the Form 5500 filed for The Mastec, Inc. 401(k) Retirement Plan for plan year 2024. That is the company paid to keep the account records: what is in an account, what went into it, and usually the site a participant signs in to.
Source
The match formula, the vesting schedule and the enrollment rules on this page were read from one document: the Form 11-K annual report that MasTec, Inc. filed with the US Securities and Exchange Commission for the plan year ended December 31, 2025. Each of those fields carries the filing sentence it was read from, expandable where the field appears. Nothing on this page was supplied by the employer to this site.
The plan assets, the participant counts, the plan-paid fees and the recordkeeper come from a different document, the plan’s DOL Form 5500 annual return, and the section that reports them links it. Comparisons with other employers are computed across the filings named in the section they appear in.
Read the filing on SEC EDGAR ↗
| Document | Form 11-K annual report |
|---|---|
| Filed with | US Securities and Exchange Commission (EDGAR) |
| Filed by | MasTec, Inc. |
| SEC CIK | 15615 |
| Accession number | 0000015615-26-000074 |
| Plan | The MasTec, Inc. 401(k) Retirement Plan |
| Period of report | December 31, 2025 |
| Filed | June 26, 2026 |
401(k) Monitor is not affiliated with MasTec, Inc., with the Securities and Exchange Commission or with this plan’s recordkeeper, and publishes this page without their involvement. It republishes a public filing and says where it came from.
Cite this page
401(k) Monitor, “MasTec, Inc. 401(k) plan facts”, from SEC Form 11-K accession 0000015615-26-000074, plan year ended December 31, 2025.
