MTZ (MasTec, Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by MTZ officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Alex Spiro | Director | A | — | — |
| 2026-08-18 | JULIA L JOHNSON | Director | A | — | — |
| 2026-08-18 | C Robert Campbell | Director | A | — | — |
| 2026-08-18 | Robert J Dwyer | Director | MIXED | — | — |
| 2026-08-18 | Manuel Benito Miranda | Director | A | — | — |
| 2026-08-18 | Ava L Parker | Director | MIXED | — | — |
| 2026-08-18 | Ernst N Csiszar | Director | MIXED | — | — |
| 2026-08-18 | Javier Alberto Palomarez | Director | MIXED | — | — |
| 2026-08-13 | JORGE MAS | Director | J | — | — |
| 2026-08-13 | JOSE RAMON MAS | CEO | J | — | — |
| 2026-06-05 | Ernst N Csiszar | Director | Sell | — | — |
| 2026-05-19 | JULIA L JOHNSON | Director | A | — | — |
| 2026-05-19 | Javier Alberto Palomarez | Director | MIXED | — | — |
| 2026-05-19 | C Robert Campbell | Director | A | — | — |
| 2026-05-19 | Ava L Parker | Director | MIXED | — | — |
| 2026-05-19 | Robert J Dwyer | Director | MIXED | — | — |
| 2026-05-19 | Ernst N Csiszar | Director | MIXED | — | — |
| 2026-05-06 | C Robert Campbell | Director | Sell | — | — |
| 2026-04-17 | Timothy Michael Love | CAO | A | — | — |
| 2026-03-27 | Javier Alberto Palomarez | Director | Sell | — | — |
| 2026-03-20 | JOSE RAMON MAS | CEO | A | — | — |
| 2026-03-20 | JORGE MAS | Director | A | — | — |
| 2026-03-20 | Alberto de Cardenas | EVP, General Counsel | A | — | — |
| 2026-03-20 | Robert E Apple | COO | A | — | — |
| 2026-03-20 | Paul DiMarco | CFO | A | — | — |
| 2026-03-12 | Alberto de Cardenas | EVP, General Counsel | F | — | — |
| 2026-03-12 | Robert E Apple | COO | F | — | — |
| 2026-03-12 | JOSE RAMON MAS | CEO | F | — | — |
| 2026-03-12 | JORGE MAS | Director | F | — | — |
| 2026-03-05 | Ernst N Csiszar | Director | Sell | — | — |
| 2026-02-18 | Ava L Parker | Director | MIXED | — | — |
| 2026-02-18 | C Robert Campbell | Director | A | — | — |
| 2026-02-18 | Ernst N Csiszar | Director | MIXED | — | — |
| 2026-02-18 | Robert J Dwyer | Director | MIXED | — | — |
| 2026-02-18 | JULIA L JOHNSON | Director | A | — | — |
| 2026-02-18 | Javier Alberto Palomarez | Director | MIXED | — | — |
| 2025-11-18 | Ernst N Csiszar | Director | MIXED | — | — |
| 2025-11-18 | Ava L Parker | Director | MIXED | — | — |
| 2025-11-18 | C Robert Campbell | Director | A | — | — |
| 2025-11-18 | Javier Alberto Palomarez | Director | MIXED | — | — |
| 2025-11-18 | JULIA L JOHNSON | Director | A | — | — |
| 2025-11-18 | Robert J Dwyer | Director | MIXED | — | — |
| 2025-11-05 | Timothy Michael Love | CAO | Sell | — | — |
| 2025-10-15 | Paul DiMarco | CFO | F | — | — |
| 2025-10-15 | Timothy Michael Love | CAO | F | — | — |
| 2025-10-01 | C Robert Campbell | Director | Sell | — | — |
| 2025-09-22 | Robert E Apple | COO | Sell | — | — |
| 2025-09-16 | C Robert Campbell | Director | Sell | — | — |
| 2025-08-22 | JOSE RAMON MAS | CEO | J | — | — |
| 2025-08-22 | JORGE MAS | Director | J | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 4,656,686 | — |
| — | CEO | 4,535,149 | — |
| — | Director | 626,678 | — |
| — | COO | 195,659 | — |
| — | CFO | 157,922 | — |
| — | EVP, General Counsel | 110,863 | — |
| — | CFO | 76,639 | — |
| — | Director | 73,474 | — |
| — | Director | 70,946 | — |
| — | President | 54,025 | — |
| — | Director | 43,861 | — |
| — | Director | 31,681 | — |
| — | Director | 20,991 | — |
| — | Director | 20,944 | — |
| — | CAO | 14,325 | — |
| — | Director | 10,934 | — |
| — | Director | 10,805 | — |
| — | Director | 5,963 | — |
| — | Director | 5,549 | — |
| — | Director | 152 | — |
| — | Director | 139 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MTZ quote page; the site-wide leaderboard is on the insider transactions hub.