Water, Sewer, Pipeline, and Communications and Power Line Construction - Latest Activist Disclosures

This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2025-08-22 13D/A MTZ / MasTec, Inc. Mas Jorge 11,872,231 15.00 0.31
2025-08-22 13D/A MTZ / MasTec, Inc. Mas Jose Ramon 6,186,877 7.80 0.62
2024-09-10 13D/A MTZ / MasTec, Inc. Mas Jorge 11,835,203 14.90 0.79
2024-09-10 13D/A MTZ / MasTec, Inc. Mas Jose Ramon 6,148,855 7.80 1.15
2024-08-30 13D/A PLPC / Preformed Line Products Company Ruhlman Robert G 1,450,813 29.53 -7.49
2024-08-30 13D/A PLPC / Preformed Line Products Company Third Restatement of Barbara P. Ruhlman Trust Agreement, dated November 20, 2008 0 0.00 -100.00
2024-08-30 13D/A PLPC / Preformed Line Products Company Ruhlman Randall M 1,147,610 23.36 -8.24
2023-01-13 13D/A MTZ / MasTec, Inc. Mas Jose Ramon 6,079,185 7.70 7.30
2023-01-13 13D/A MTZ / MasTec, Inc. Mas Jorge 11,742,880 14.90 1.22
2022-09-16 13D/A PLPC / Preformed Line Products Company Ruhlman Randall M 1,250,704 25.31 -16.53
2022-09-16 13D/A PLPC / Preformed Line Products Company Ruhlman Robert G 1,568,204 31.74 0.61
2022-09-16 13D/A PLPC / Preformed Line Products Company Third Restatement of Barbara P. Ruhlman Trust Agreement, dated November 20, 2008 1,414,613 28.63
2022-08-02 13D/A PLPC / Preformed Line Products Company Barbara P Ruhlman Revocable Trust dated 9/21/16 1,414,613 28.63 74.56
2022-01-14 13D/A PLPC / Preformed Line Products Company Barbara P Ruhlman Revocable Trust dated 9/21/16 810,400 16.54
2020-07-24 13D/A PRIM / Primoris Services Corporation Pratt Brian 2,112,709 4.40 -23.98
2019-12-16 13D/A PRIM / Primoris Services Corporation Pratt Brian 2,779,162 5.70
2019-11-20 13D/A MTZ / MasTec, Inc. Mas Jose Ramon 5,665,792 7.40 2.52
2019-11-20 13D/A MTZ / MasTec, Inc. Mas Jorge 11,601,007 13.30 6.73
2016-12-07 13D/A PLPC / Preformed Line Products Company Ruhlman Barbara P 1,432,033 27.97 0.00
2016-12-06 13D/A PLPC / Preformed Line Products Company Ruhlman Robert G 1,558,760 30.44 113.80
2016-12-06 13D/A PLPC / Preformed Line Products Company Ruhlman Randall M 1,498,350 29.26 123.46
2016-10-13 13D/A PLPC / Preformed Line Products Company Ruhlman Randall M 670,530 13.08
2016-10-13 13D/A PLPC / Preformed Line Products Company Ruhlman Barbara P 1,432,033 27.94
2016-10-13 13D/A PLPC / Preformed Line Products Company Ruhlman Robert G 729,079 14.22
2016-10-13 13D/A PLPC / Preformed Line Products Company Barbara P Ruhlman Irrevocable Trust dated 7/29/08 22,500 0.44
2015-12-18 13D/A MTZ / MasTec, Inc. Mas Jorge 10,869,100 13.60
2015-12-09 13D MTZ / MasTec, Inc. Mas Jose Ramon 5,526,703 6.92
2013-03-04 13D/A PLPC / Preformed Line Products Company Ruhlman Randall M 1,615,426 30.04
2013-03-04 13D/A PLPC / Preformed Line Products Company Ruhlman Barbara P 628,356 11.70
2013-03-04 13D PLPC / Preformed Line Products Company Barbara P Ruhlman Irrevocable Trust dated 7/29/08 928,201 17.30
2013-03-04 13D/A PLPC / Preformed Line Products Company Ruhlman Robert G 1,891,963 35.18
2012-02-27 13D/A ESOA / Energy Services of America Corporation Reynolds Douglas V 1,162,279 8.00
2012-02-27 13D/A ESOA / Energy Services of America Corporation Reynolds Marshall T 1,712,773 11.90
2012-02-27 13D/A ESOA / Energy Services of America Corporation Burns Edsel R 793,540 5.50