Company profile
Mastec Inc Insider Trading
MTZEvery SEC Form 4 insider trading filing for Mastec Inc (MTZ) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- NYSE
- Sector
- Water, Sewer, Pipeline, Comm & Power Line Construction
- CIK
- 0000015615
- Filings
- 155
- Insiders
- 14
- Last filing
- 2026-08-14
Activity summary
Recent insider activity is bullish. Over the last 30 days, 8 insiders purchased shares versus 4 sales. Buying was led by Campbell C Robert.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Mastec Inc insiders were net sellers in every quarter shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $20.5M.
90 day insight
Over the last 90 days, Mastec Inc insiders bought $0 (8 transactions) and sold $2.4M (5 transactions).
- Most active insider: Csiszar Ernst N with 3 transactions totaling $2.4M.
- Largest single sale: $2.4M by Csiszar Ernst N on Jun 3, 2026.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 14, 2026 | Campbell C Robert | MTZ | Award | 139 | — | — |
| Aug 14, 2026 | Palomarez Javier Alberto | MTZ | Tax Withholding | 31 | $297.59 | $9K |
| Aug 14, 2026 | Miranda Manuel Benito | MTZ | Award | 152 | — | — |
| Aug 14, 2026 | Parker Ava L | MTZ | Award | 177 | — | — |
| Aug 14, 2026 | Csiszar Ernst N | MTZ | Tax Withholding | 34 | $297.59 | $10K |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Query this yourself
The same rows, over the API.
curl "https://api.form4api.com/v1/transactions?ticker=MTZ" \
-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Mastec Inc as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →