🕵️ Mastec Inc ($MTZ)
SEC insider & ownership activity, last 12 months · CIK 15615 · every row links its SEC filing
Over the last 12 months insiders sold $8.7M with no open-market buying against it. Ernst N. Csiszar sold $4.4M in discretionary trades (Mar–Jun). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 5 sellers, $8.7M (8 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Ernst N. Csiszar | 0 | – | 2 | $4.4M | Jun 3, 2026 |
| Robert E. Apple | 0 | – | 2 | $2.0M | Sep 18, 2025 |
| Campbell C. Robert | 0 | – | 2 | $1.7M | May 4, 2026 |
| Love Timothy Michael | 0 | – | 1 | $398K | Nov 3, 2025 |
| Palomarez Javier Alberto | 0 | – | 1 | $309K | Mar 25, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Jorge Mas | 14.8% | 13D | Aug 11, 2026 | filing ↗ | |
| BlackRock, Inc. | 8.1% | 13G | Jul 29, 2026 | filing ↗ | |
| Jose Ramon Mas | 7.7% | 13D | Aug 11, 2026 | filing ↗ | |
| Jorge MAS Holdings I, LLC | 7.1% | 13D | Aug 11, 2026 | filing ↗ | |
| Jorge MAS Holdings, LLC | 7.1% | 13D | Aug 11, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Ernest N. Csiszar | $2.4M | Jun 3, 2026 | filing ↗ |
| Campbell C. Robert | $1.3M | May 4, 2026 | filing ↗ |
| Palomarez Javier Alberto | $307K | Mar 25, 2026 | filing ↗ |
| Ernest N. Csiszar | $2.0M | Mar 3, 2026 | filing ↗ |
| Love Timothy Michael | $398K | Nov 3, 2025 | filing ↗ |
| Campbell C. Robert | $421K | Sep 29, 2025 | filing ↗ |
| Robert E. Apple | $2.0M | Sep 18, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Aug 17, 2026 | filing ↗ |
| New financial obligation (2.03) | Aug 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 17, 2026 | filing ↗ |
| Material agreement (1.01) | Aug 6, 2026 | filing ↗ |
| Other events (8.01) | Aug 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 31, 2026 | filing ↗ |
| Earnings (2.02) | Jul 24, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 24, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 24, 2026 | filing ↗ |
| New financial obligation (2.03) | Jul 20, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 30, 2026 | filing ↗ |
| New financial obligation (2.03) | Jun 30, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Jun 30, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 30, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 21, 2026 | filing ↗ |
| Earnings (2.02) | Apr 30, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 30, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Oct 30, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 30, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 30, 2025 | filing ↗ |