By CapitalSnitch Research Desk · updated Oct 11, 2026 · data from SEC filings and official Congress disclosures
Over the past year there were no insider purchases at Mastec Inc. Four insiders sold roughly $6.3 million instead.
That's worth context: executives sell for plenty of routine reasons, from scheduled trading plans to tax bills. Buying is the rarer, more telling signal.
Big money check: 910 institutions held MTZ as of Q2 2026, and more funds bought than sold. MTZ also shows up in congressional disclosures: 11 reported trades from three lawmakers in two years. No open-market insider buying or selling in the last full quarter. Insiders bought in 0 of the last 7 full quarters.
Are insiders buying or selling MTZ stock?
In the last 12 months Mastec Inc insiders made open-market purchases worth about $0 and sales worth about $6.3 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
When was the last insider trade in MTZ?
The most recent open-market insider trade in MTZ was filed on 2026-06-05.
How many institutions own MTZ?
910 investment managers reported holding MTZ in SEC Form 13F filings for Q2 2026.
Has any member of Congress traded MTZ?
Yes. Members of Congress reported 11 trades in MTZ over the past two years. The full list is free on CapitalSnitch.
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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1).
Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).