MasTec, Inc. (MTZ) has 18 known insider and institutional holders on record. The largest holder is MAS JORGE with 4,556,686 shares. Other notable holders include MAS JOSE RAMON and Apple Robert E.
Over the last 12 months, insiders have made 47 transactions in MTZ stock — 13 buys (valued at RSU Award) and 10 sells (valued at $7.98M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
MTZ Insider Ownership
Top Holder
MAS JORGE
4,556,686 shares
Buys (12 mo)
13
$0.00 value
Sells (12 mo)
10
$7.98M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Mas Jorge |
Director |
4,556,686 |
2026-03-20 |
|
| 2 |
Mas Jose Ramon |
CEO |
3,254,461 |
2026-03-20 |
|
| 3 |
Apple Robert E |
COO |
183,591 |
2026-03-20 |
|
| 4 |
Pita George |
CFO |
156,475 |
2023-03-21 |
|
| 5 |
De Cardenas Alberto |
EVP, General Counsel |
102,780 |
2026-03-20 |
|
| 6 |
Johnson Julia L |
Director |
73,240 |
2026-02-18 |
|
| 7 |
Heuvelen John Van |
Director |
70,946 |
2017-05-17 |
|
| 8 |
Dimarco Paul |
CFO |
66,627 |
2026-03-20 |
|
| 9 |
Harris Ray |
President |
54,025 |
2013-01-02 |
|
| 10 |
Sorzano Jose S |
Director |
43,861 |
2020-11-17 |
|
| 11 |
Campbell C Robert |
Director |
33,646 |
2026-02-18 |
|
| 12 |
Jaumot Frank E |
Director |
20,944 |
2016-05-17 |
|
| 13 |
Dwyer Robert J |
Director |
20,778 |
2026-02-18 |
|
| 14 |
Csiszar Ernst N |
Director |
17,235 |
2026-03-05 |
|
| 15 |
Palomarez Javier Alberto |
Director |
10,592 |
2026-03-27 |
|
| 16 |
Love Timothy Michael |
CAO |
9,757 |
2025-11-05 |
|
| 17 |
Restrepo Daniel A |
Director |
5,963 |
2015-08-18 |
|
| 18 |
Parker Ava L |
Director |
5,285 |
2026-02-18 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-25 |
Palomarez Javier Alberto |
Director |
Informative Sell |
950 |
$325.43 |
$309.16K |
| 2026-03-18 |
Dimarco Paul |
CFO |
RSU Award |
9,074 |
- |
- |
| 2026-03-18 |
Apple Robert E |
COO |
RSU Award |
11,548 |
- |
- |
| 2026-03-18 |
De Cardenas Alberto |
EVP, General Counsel |
RSU Award |
6,269 |
- |
- |
| 2026-03-18 |
Mas Jose Ramon |
CEO |
RSU Award |
26,397 |
- |
- |
| 2026-03-18 |
Mas Jorge |
Director |
RSU Award |
15,838 |
- |
- |
| 2026-03-10 |
Apple Robert E |
COO |
Tax Withholding of RSU |
12,206 |
$297.81 |
$3.64M |
| 2026-03-10 |
De Cardenas Alberto |
EVP, General Counsel |
Tax Withholding of RSU |
4,838 |
$297.81 |
$1.44M |
| 2026-03-10 |
Mas Jose Ramon |
CEO |
Tax Withholding of RSU |
28,184 |
$297.81 |
$8.39M |
| 2026-03-10 |
Mas Jorge |
Director |
Tax Withholding of RSU |
15,958 |
$297.81 |
$4.75M |
| 2026-03-03 |
Csiszar Ernst N |
Director |
Informative Sell |
6,500 |
$300.40 |
$1.95M |
| 2026-02-13 |
Palomarez Javier Alberto |
Director |
Tax Withholding of RSU |
34 |
$269.53 |
$9.16K |
| 2026-02-13 |
Parker Ava L |
Director |
Tax Withholding of RSU |
22 |
$269.53 |
$5.93K |
| 2026-02-13 |
Csiszar Ernst N |
Director |
Tax Withholding of RSU |
37 |
$269.53 |
$9.97K |
| 2026-02-13 |
Campbell C Robert |
Director |
RSU Award |
154 |
- |
- |
| 2026-02-13 |
Dwyer Robert J |
Director |
Tax Withholding of RSU |
34 |
$269.53 |
$9.16K |
| 2026-02-13 |
Johnson Julia L |
Director |
RSU Award |
154 |
- |
- |
| 2025-11-14 |
Palomarez Javier Alberto |
Director |
Tax Withholding of RSU |
48 |
$192.22 |
$9.23K |
| 2025-11-14 |
Parker Ava L |
Director |
Tax Withholding of RSU |
31 |
$192.22 |
$5.96K |
| 2025-11-14 |
Csiszar Ernst N |
Director |
Tax Withholding of RSU |
52 |
$192.22 |
$10K |
| 2025-11-14 |
Campbell C Robert |
Director |
RSU Award |
215 |
- |
- |
| 2025-11-14 |
Dwyer Robert J |
Director |
Tax Withholding of RSU |
48 |
$192.22 |
$9.23K |
| 2025-11-14 |
Johnson Julia L |
Director |
RSU Award |
215 |
- |
- |
| 2025-11-03 |
Love Timothy Michael |
CAO |
Informative Sell |
1,929 |
$206.15 |
$397.66K |
| 2025-10-10 |
Dimarco Paul |
CFO |
Tax Withholding of RSU |
2,925 |
$210.09 |
$614.51K |
