Mastec's three largest insider shareholders as of June 09, 2026 are Jorge Mas (Director, 4.56Mn shares), Jose Ramon Mas (Ceo, 3.25Mn shares), Robert E Apple (Coo, 183.59K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jorge Mas | - | 4,556,686 | 0 | 20 Mar, 2026 |
| Jose Ramon Mas | Ceo | 3,254,461 | 0 | 20 Mar, 2026 |
| Julia L Johnson | - | 73,240 | 0 | 18 Feb, 2026 |
| George Pita | Cfo | 156,475 | 0 | 21 Mar, 2023 |
| Robert J Dwyer | - | 20,778 | 0 | 18 Feb, 2026 |
| C Robert Campbell | Evp Cfo | 33,646 | 0 | 18 Feb, 2026 |
| Ernst N Csiszar | - | 17,235 | 0 | 05 Mar, 2026 |
| Timothy Michael Love | Cao | 10,292 | 0 | 17 Apr, 2026 |
| Robert E Apple | Coo | 183,591 | 0 | 20 Mar, 2026 |
| Javier Alberto Palomarez | - | 10,592 | 0 | 27 Mar, 2026 |
| Paul Dimarco | Cfo | 66,627 | 0 | 20 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 17 Mar, 2026 | Timothy Michael Love | Common Stock | A | 492 | $0.00 | 10,292 | D | A |
| 25 Mar, 2026 | Javier Alberto Palomarez | Common Stock | D | 950 | $325.43 | 10,592 | D | S |
| 25 Mar, 2026 | Javier Alberto Palomarez | Common Stock | D | 950 | $325.43 | 10,592 | D | S |
| 25 Mar, 2026 | Javier Alberto Palomarez | Common Stock | D | 950 | $325.43 | 10,592 | D | S |
| 18 Mar, 2026 | Jose Ramon Mas | Common Stock | A | 26,397 | $0.00 | 3,254,461 | D | A |
| 18 Mar, 2026 | Jorge Mas | Common Stock | A | 15,838 | $0.00 | 4,556,686 | D | A |
| 18 Mar, 2026 | Paul Dimarco | Common Stock | A | 9,074 | $0.00 | 66,627 | D | A |
| 18 Mar, 2026 | Robert E Apple | Common Stock | A | 11,548 | $0.00 | 183,591 | D | A |
| 10 Mar, 2026 | Robert E Apple | Common Stock | D | 12,206 | $297.81 | 172,043 | D | F |
| 10 Mar, 2026 | Jorge Mas | Common Stock | D | 15,958 | $297.81 | 4,540,848 | D | F |
| 10 Mar, 2026 | Jose Ramon Mas | Common Stock | D | 28,184 | $297.81 | 3,228,064 | D | F |
| 03 Mar, 2026 | Ernst N Csiszar | Common Stock | D | 6,500 | $300.40 | 17,235 | D | S |
| 13 Feb, 2026 | Javier Alberto Palomarez | Common Stock | A | 154 | $0.00 | 11,576 | D | A |
| 13 Feb, 2026 | Ernst N Csiszar | Common Stock | A | 168 | $0.00 | 23,772 | D | A |
| 13 Feb, 2026 | Javier Alberto Palomarez | Common Stock | A | 154 | $0.00 | 11,576 | D | A |
| 13 Feb, 2026 | Robert J Dwyer | Common Stock | A | 154 | $0.00 | 20,812 | D | A |
| 13 Feb, 2026 | Julia L Johnson | Common Stock | A | 154 | $0.00 | 73,240 | D | A |
| 13 Feb, 2026 | Javier Alberto Palomarez | Common Stock | A | 154 | $0.00 | 11,576 | D | A |
| 13 Feb, 2026 | C Robert Campbell | Common Stock | A | 154 | $0.00 | 33,646 | D | A |
| 13 Feb, 2026 | Ernst N Csiszar | Common Stock | D | 37 | $269.53 | 23,735 | D | F |