MTZ
MASTEC INC · Construction · Market cap $19.3B
Insiders sold $2.4M net in the last 90 days ·1 seller, 0 buyers· latest Form 4 filed Jun 5, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$9.3M
reported sales (SEC code S)
Unique Insiders
5
in the rolling window
Latest filing
Aug 18, 2026
Csiszar Ernst N
MASTEC INC (MTZ) has 46 SEC Form 4 filings (63 transaction rows) in the rolling window, disclosed by 5 distinct insiders. Most recent filing: Aug 18, 2026.
Inside the rolling window, 5 insiders at MASTEC INC reported no open-market purchases and 8 open-market sales totaling $9.3M. The most active filer is Director Campbell C Robert with 3 filings. Insiders have net sold $5.9M over the trailing 6 months. The most recent open-market filing is a sale of 6,500 shares by Director Csiszar Ernst N, dated Jun 3, 2026, worth $2.4M.
- Industry:Engineering & Construction
- CEO:Jose Ramon Mas
- Employees:32,000
- HQ:Coral Gables, FL, US
- IPO:1973-02-21
| Source | |||||||
|---|---|---|---|---|---|---|---|
Csiszar Ernst NFirst in 3 months | Director | Sale | 6,500 | $2.4M | Jun 5 | -33.9% | SEC ↗ |
Campbell C RobertFirst in 7 months | Director | Sale | 3,000 | $1.3M | May 6 | -44.5% | SEC ↗ |
Palomarez Javier AlbertoFirst filing | Director | Sale | 950 | $309K | Mar 27 | -23.9% | SEC ↗ |
Csiszar Ernst NFirst filing | Director | Sale | 6,500 | $2.0M | Mar 5 | -18.6% | SEC ↗ |
Love Timothy MichaelFirst filing | CAO | Sale | 1,929 | $398K | Nov 5 | +20.8% | SEC ↗ |
| Director | Sale | 2,000 | $421K | Oct 1 | +11.8% | SEC ↗ | |
Apple Robert EFirst filing | COO | Sale | 10,000 | $2.0M | Sep 22 | +16.1% | SEC ↗ |
Campbell C RobertFirst filing | Director | Sale | 3,000 | $571K | Sep 16 | +25.2% | SEC ↗ |
Congress trading MTZ 10 all-time
- RSen. Markwayne MullinSale$15,001 - $50,0002026-02-04
- RSen. Markwayne MullinSale$15,001 - $50,0002025-12-18
- RSen. Markwayne MullinSale$15,001 - $50,0002025-12-18
- RSen. Markwayne MullinOther$15,001 - $50,0002025-12-18
- RSen. Markwayne MullinOther$15,001 - $50,0002025-12-18
- RSen. Markwayne MullinOther$15,001 - $50,0002025-12-18
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does MTZ have?
MASTEC INC (MTZ) has 46 SEC Form 4 filings (63 transaction rows) in the rolling 365-day window, disclosed by 5 distinct insiders. Most recent filing: Aug 18, 2026.
When was the most recent SEC Form 4 filing for MTZ?
The most recent Form 4 filing for MTZ on Tracefour is dated Aug 18, 2026.
Who is the most active insider at MTZ?
The most active SEC Form 4 filer at MTZ in the rolling window is Director Campbell C Robert, with 3 filings.
What is the net insider flow at MTZ over the last 6 months?
Over the trailing 180 days, insiders at MTZ have net sold $5.9M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at MTZ in the current window?
Inside the rolling window, insiders at MTZ bought $0 and sold $9.3M based on SEC Form 4 filings.
Can I get alerts for MTZ insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at MASTEC INC (MTZ). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
MASTEC INC is in the Construction sector.