MasTec Inc

MTZNYSE
$297.59
11.484.01%
At close: Aug 14, 5:00 PM EST
$287.50
-10.09-3.39%
After Hours: Aug 14, 4:58 PM EST

MasTec Ownership & Insider Activity

MasTec (MTZ) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 11.4% of shares outstanding. Institutional investors hold 42.9%. Over the past 90 days, insiders made 1 sale worth $2.4M.

Shares Outstanding

80.305M

Shares Float

63.422M

Insider Shares Owned

9.019M

Insider % Owned

11.4%

Institutional Shares Held

34.415M

Institutional % Held

42.9%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

0

Sales (90d)

1

$2.4M total

Net Activity

Net Selling

Net Value (90d)

-$2.4M

MasTec Insider Transactions (Last 6 Months)

DateInsiderTitleTypeSharesPriceValue
Jun 3, 2026Ernst CsiszarDIRECTORSELL6.500K$371.17$2.4M
May 4, 2026Robert CampbellDIRECTORSELL3.000K$417.00$1.3M

Congressional Trading Activity

DateMemberPartyChamberActionAmount
Feb 4, 2026Markwayne MullinRSenateS$15,001 - $50,000
Dec 18, 2025Markwayne MullinRSenateS$15,001 - $50,000