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.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
8
code S
Reporting Insiders
21
current holders
MTZ — Recent Form 4 Transactions (latest 2026-08-18)
FiledInsiderRole TypeSharesValue
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
MTZ — Current Insider Holders
InsiderRole Shares HeldValue
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
How to read Form 4 activity

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.