MTZNYSE · Water, Sewer, Pipeline, Comm & Power Line Construction

MASTEC INC

Alert me on MTZ

Insider buys, 6 months

Congress trades, 6 months

Signals, 6 months

Six months

After each filing

Sep 12 Buy Rep. Thomas H. Kean House

1 week

−2.1%S&P +1.9%

1 month

−9.5%S&P +2.5%

3 months

Result in34 trading days

6 months

Result in97 trading days

Jun 6 Sale Csiszar Ernst N Insider

1 week

+2.8%S&P +2.1%

1 month

+6.4%S&P +1.9%

3 months

−31.9%S&P +3.9%

6 months

Result in30 trading days

May 7 Sale Campbell C Robert Insider

1 week

+5.5%S&P +2.3%

1 month

−12.3%S&P +1.0%

3 months

−33.9%S&P +6.0%

6 months

Result in9 trading days

Mar 28 Sale Palomarez Javier Alberto Insider

1 week

+10.6%S&P +4.3%

1 month

+21.2%S&P +12.6%

3 months

+36.1%S&P +18.5%

6 months

−31.3%S&P +21.5%

Mar 6 Sale Csiszar Ernst N Insider

1 week

+1.5%S&P −1.5%

1 month

+18.4%S&P −1.7%

3 months

+27.4%S&P +10.0%

6 months

−17.0%S&P +15.2%

Show all 12

Nov 21, 2025 Buy Rep. Lisa McClain House

1 week

+4.1%S&P +1.9%

1 month

+9.2%S&P +3.5%

3 months

+41.7%S&P +3.4%

6 months

+87.3%S&P +13.5%

Nov 21, 2025 Sale Rep. Lisa McClain House

1 week

+4.1%S&P +1.9%

1 month

+9.2%S&P +3.5%

3 months

+41.7%S&P +3.4%

6 months

+87.3%S&P +13.5%

Nov 6, 2025 Sale Love Timothy Michael Insider

1 week

−3.3%S&P +0.3%

1 month

+12.2%S&P +2.0%

3 months

+33.3%S&P +3.8%

6 months

+114.3%S&P +10.9%

Oct 2, 2025 Sale Campbell C Robert Insider

1 week

−2.5%S&P +0.3%

1 month

−5.2%S&P +1.9%

3 months

+5.7%S&P +2.4%

6 months

+56.6%S&P −1.0%

Sep 23, 2025 Sale Apple Robert E Insider

1 week

+3.2%S&P +0.4%

1 month

−4.6%S&P +0.7%

3 months

+8.9%S&P +3.6%

6 months

+56.9%S&P −0.4%

Sep 17, 2025 Sale Campbell C Robert Insider

1 week

+6.5%S&P +0.6%

1 month

+5.2%S&P +0.5%

3 months

+12.8%S&P +3.3%

6 months

+61.7%S&P +0.7%

Aug 13, 2025 Buy Rep. Lisa McClain House

1 week

−2.4%S&P −1.5%

1 month

+8.6%S&P +2.5%

3 months

+12.1%S&P +6.3%

6 months

+51.4%S&P +6.3%

Every purchase and sale on this ticker reported by a member of Congress or an insider, measured from the close of the first trading day after it became public to the close 1 week, 1 month, 3 months and 6 months later, each beside the S&P over the same days.

Filings for MTZ

63 held · newest 563 held · newest 2

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See all 63 filings for MTZ

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New sources, new features and offers like our founding price. A few times a month at most. Stop any time.

Signal history

No signal for this ticker yet. A signal is written when insider buying here scores one dot or more.

Stakes

Aug 11, 2026 Schedule 13D, amended

Jorge Mas: 14.8%, 11,872,111 shares

Aug 11, 2026 Schedule 13D, amended

Jose Ramon Mas: 7.7%, 6,185,090 shares

Jun 30, 2026 Schedule 13G, amended

BlackRock, Inc.: 8.1%, 6,400,155 shares

Mar 13, 2026 Schedule 13G, amended

The Vanguard Group: 0%, 0 shares

Schedule 13D is filed within 5 business days of crossing 5 percent by an investor who may seek to influence the company. Schedule 13G is filed by a passive holder, and a large institution has up to 45 days after the quarter end.

Government contracts, last 12 months

Awards of $10M and up, from USAspending · context, not a signal

No contracts of $10M or more in the last 12 months.

Lobbying

Last four quarters

$75KQ4 2025

$75KQ1 2026

$75KQ2 2026

$75KQ3 2026

Unchanged from Q2 2026. Reported to the Senate each quarter by the firms it hires.Original report ↗

Read from LDA.gov between Sep 23, 2026 and Oct 20, 2026. Senate Office of Public Records cannot vouch for the data or analyses derived from these data after the data have been retrieved from LDA.gov.