MTZ · Insider Trading
MasTec, Inc.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Alex Spiro | Director | A | +139 | — |
| 2026-08-18 | Julia L Johnson | Director | A | +139 | — |
| 2026-08-18 | C Robert Campbell | Director | A | +139 | — |
| 2026-08-18 | Robert J Dwyer | Director | MIXED | +108 | −$9.23K |
| 2026-08-18 | Manuel Benito Miranda | Director | A | +152 | — |
| 2026-08-18 | Ava L Parker | Director | MIXED | +157 | −$5.95K |
| 2026-08-18 | Ernst N Csiszar | Director | MIXED | +118 | −$10.12K |
| 2026-08-18 | Javier Alberto Palomarez | Director | MIXED | +108 | −$9.23K |
| 2026-08-13 | Jorge Mas | Director | J | — | — |
| 2026-08-13 | Jose Ramon Mas | CEO | J | — | — |
| 2026-06-05 | Ernst N Csiszar | Director | Sell | −6,500 | −$2.41M |
| 2026-05-19 | Julia L Johnson | Director | A | +95 | — |
| 2026-05-19 | Javier Alberto Palomarez | Director | MIXED | +74 | −$9.13K |
| 2026-05-19 | C Robert Campbell | Director | A | +95 | — |
| 2026-05-19 | Ava L Parker | Director | MIXED | +107 | −$6.09K |
| 2026-05-19 | Robert J Dwyer | Director | MIXED | +74 | −$9.13K |
| 2026-05-19 | Ernst N Csiszar | Director | MIXED | +81 | −$10.00K |
| 2026-05-06 | C Robert Campbell | Director | Sell | −3,000 | −$1.25M |
| 2026-04-17 | Timothy Michael Love | CAO | A | +492 | — |
| 2026-03-27 | Javier Alberto Palomarez | Director | Sell | −950 | −$309.16K |
| 2026-03-20 | Jose Ramon Mas | CEO | A | +26,397 | — |
| 2026-03-20 | Jorge Mas | Director | A | +15,838 | — |
| 2026-03-20 | Alberto de Cardenas | EVP, General Counsel | A | +6,269 | — |
| 2026-03-20 | Robert E Apple | COO | A | +11,548 | — |
| 2026-03-20 | Paul DiMarco | CFO | A | +9,074 | — |
| 2026-03-12 | Alberto de Cardenas | EVP, General Counsel | F | −4,838 | −$1.44M |
| 2026-03-12 | Robert E Apple | COO | F | −12,206 | −$3.64M |
| 2026-03-12 | Jose Ramon Mas | CEO | F | −28,184 | −$8.39M |
| 2026-03-12 | Jorge Mas | Director | F | −15,958 | −$4.75M |
| 2026-03-05 | Ernst N Csiszar | Director | Sell | −6,500 | −$1.95M |
| 2026-02-18 | Ava L Parker | Director | MIXED | +173 | −$5.93K |
| 2026-02-18 | C Robert Campbell | Director | A | +154 | — |
| 2026-02-18 | Ernst N Csiszar | Director | MIXED | +131 | −$9.97K |
| 2026-02-18 | Robert J Dwyer | Director | MIXED | +120 | −$9.16K |
| 2026-02-18 | Julia L Johnson | Director | A | +154 | — |
| 2026-02-18 | Javier Alberto Palomarez | Director | MIXED | +120 | −$9.16K |
| 2025-11-18 | Ernst N Csiszar | Director | MIXED | +183 | −$10.00K |
| 2025-11-18 | Ava L Parker | Director | MIXED | +243 | −$5.96K |
| 2025-11-18 | C Robert Campbell | Director | A | +215 | — |
| 2025-11-18 | Javier Alberto Palomarez | Director | MIXED | +167 | −$9.23K |
| 2025-11-18 | Julia L Johnson | Director | A | +215 | — |
| 2025-11-18 | Robert J Dwyer | Director | MIXED | +167 | −$9.23K |
| 2025-11-05 | Timothy Michael Love | CAO | Sell | −1,929 | −$397.66K |
| 2025-10-15 | Paul DiMarco | CFO | F | −2,925 | −$614.51K |
| 2025-10-15 | Timothy Michael Love | CAO | F | −621 | −$130.47K |
| 2025-10-01 | C Robert Campbell | Director | Sell | −2,000 | −$420.78K |
| 2025-09-22 | Robert E Apple | COO | Sell | −10,000 | −$2.00M |
| 2025-09-16 | C Robert Campbell | Director | Sell | −3,000 | −$571.17K |
| 2025-08-22 | Jose Ramon Mas | CEO | J | −24,056 deriv. | — |
| 2025-08-22 | Jorge Mas | Director | J | −77,598 deriv. | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Jorge Mas | Director | 4,656,686 | $795.46M |
| Jose Ramon Mas | CEO | 4,535,149 | $774.69M |
| Robert E Apple | COO | 195,659 | $33.42M |
| Alberto de Cardenas | EVP, General Counsel | 110,863 | $18.94M |
| Paul DiMarco | CFO | 76,639 | $13.09M |
| Julia L Johnson | Director | 73,474 | $12.55M |
| C Robert Campbell | Director | 31,681 | $5.41M |
| Robert J Dwyer | Director | 20,991 | $3.59M |
| Timothy Michael Love | CAO | 14,325 | $2.45M |
| Ernst N Csiszar | Director | 10,934 | $1.87M |
| Javier Alberto Palomarez | Director | 10,805 | $1.85M |
| Ava L Parker | Director | 5,549 | $947.88K |
| Manuel Benito Miranda | Director | 152 | $25.96K |
| Alex Spiro | Director | 139 | $23.74K |
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.
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.