MasTec, Inc. (MTZ)
NYSE: MTZ · Water, Sewer, Pipeline, Comm & Power Line Construction · Coral Gables, FL · filing with the SEC since 1994
Grade4.7
◀ Past 3.3● Present 6.4▶ Future 4.6
Who owns MasTec, Inc.
As filed with the SECHolders of 5% or more
3
Jorge Mas holds 14.8% of Common Stock, Par Value $.10 Per Share, as its SCHEDULE 13D/A filed Aug 13, 2026 says.
Directors and officers
14
report now, of 18 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Jorge Mas
SCHEDULE 13D/A · filed Aug 13, 2026 · Common Stock, Par Value $.10 Per Share · 15% in Aug 22, 2025
Blackrock, Inc.
SCHEDULE 13G/A · filed Jul 29, 2026 · Common Stock · 6.8% in Apr 17, 2025
Jose Ramon Mas
SCHEDULE 13D/A · filed Aug 13, 2026 · Common Stock, Par Value $.10 Per Share · 7.8% in Aug 22, 2025
Nordea Investment Management Ab
SCHEDULE 13G · filed Nov 5, 2024 · E-EQUITY · reported falling below 5%, from 5% in Feb 6, 2024
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What MTZ reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Waha JVs
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
190 subsidiaries in 8 countries, from the list filed with the 10-K filed Feb 26, 2026.
Insider tradesForm 4
5sales
0purchases
1sales on a scheduled plan
4people selling
$6.0Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 4, 2025 to Nov 4, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 4, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window4 of 18 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Csiszar Ernst N | director | 2 | $4.4M | 0 | 0 | $0 |
| Campbell C Robert | EVP & CFO | 1 | $1.3M | 0 | 0 | $0 |
| Palomarez Javier Alberto | director | 1 | $300,000 | 0 | 0 | $0 |
| Love Timothy Michael | CAO | 1 | $100,000 | 1 | 0 | $0 |