Construction, Mining, And Materials Handling - 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)
2026-05-21 13D/A GPUS.PRD / Hyperscale Data, Inc. - Preferred Stock Ault & Company, Inc. 495,555,929 52.00
2026-05-08 13D GENC / Gencor Industries, Inc. E.J. Elliott Family Limited Partnership 4,002,601 27.30
2026-02-06 13D CMCO / Columbus McKinnon Corporation CD&R Investment Associates XII, Ltd. 21,231,422 42.50
2026-01-08 13D/A ASTE / Astec Industries, Inc. Gamco Investors, Inc. Et Al 1,167,886 5.10 -7.14
2025-12-03 13D/A KLNG / Koil Energy Solutions, Inc. Smith Ronald Eric 1,407,033 11.50 -34.54
2025-12-03 13D/A KLNG / Koil Energy Solutions, Inc. MAZ Partners LP 300,023 2.50 -52.88
2025-11-20 13D/A GPUS / Hyperscale Data, Inc. Ault & Company, Inc. 177,971,101 35.55 20.64
2025-11-06 13D/A SEI / Solaris Energy Infrastructure, Inc. KTR Management Company, LLC 2,000,000 3.94 -51.39
2025-11-06 13D/A HY / Hyster-Yale, Inc. Gamco Investors, Inc. Et Al 819,887 5.70 -13.37
2025-09-30 13D/A GPUS / Hyperscale Data, Inc. Ault & Company, Inc. 147,524,542 53.18 0.00
2025-09-17 13D/A GPUS / Hyperscale Data, Inc. Ault & Company, Inc. 147,520,342 71.49 12.23
2025-09-04 13D/A GPUS / Hyperscale Data, Inc. Ault & Company, Inc. 131,449,069 82.22 845.62
2025-08-08 13D/A SEI / Solaris Energy Infrastructure, Inc. KTR Management Company, LLC 4,114,783 6.10 -49.29
2025-07-30 13D/A SEI / Solaris Energy Infrastructure, Inc. J. Turbines, Inc. 2,114,783 3.10 -66.24
2025-07-09 13D/A KLNG / Koil Energy Solutions, Inc. Smith Ronald Eric 2,149,383 17.80
2025-05-07 13D/A SEI / Solaris Energy Infrastructure, Inc. J. Turbines, Inc. 6,264,783 13.40 -22.80
2025-03-14 13D/A HY / Hyster-Yale, Inc. AMR Associates, L.P. 3,217,230 93.10
2025-03-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 3,217,230 93.10 9.30
2025-03-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 3,217,230 93.10 9.30
2025-03-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 3,217,230 93.10 9.30
2025-03-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 3,217,230 93.10 9.30
2025-03-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 3,217,230 93.10 9.30
2025-03-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 3,217,230 93.10 9.30
2025-02-27 13D/A QSEP / QS Energy, Inc. Kyte Cecil Bond 48,504,583 10.33 514.73
2025-01-06 13D/A GPUS / Hyperscale Data, Inc. Ault & Company, Inc. 13,900,765 91.74
2024-11-12 13D/A GENC / Gencor Industries, Inc. Gamco Investors, Inc. Et Al 288,867 2.34 -48.36
2024-10-15 13D KLNG / Koil Energy Solutions, Inc. Goldman Neal I 750,000 6.00
2024-09-13 13D SEI / Solaris Energy Infrastructure, Inc. KTR Management Company, LLC 8,114,783 21.10
2024-09-13 13D SEI / Solaris Energy Infrastructure, Inc. J. Turbines, Inc. 8,114,783 21.10
2024-07-24 13D/A GPUS / Hyperscale Data, Inc. Ault Milton C Iii 214,943,126 85.72 3,441.66
2024-07-24 13D/A KLNG / Koil Energy Solutions, Inc. MAZ Partners LP 636,667 5.20 -23.06
2024-07-10 13D/A ASTE / Astec Industries, Inc. Gamco Investors, Inc. Et Al 1,257,666 5.52 28.86
2024-05-09 13D/A HY / Hyster-Yale, Inc. Gamco Investors, Inc. Et Al 946,392 6.75 -6.83
2024-03-06 13D KLNG / Koil Energy Solutions, Inc. Galloway Capital Partners, LLC 985,651 8.29 25.52
2024-02-13 13D/A HY / Hyster-Yale, Inc. Abigail LLC 970,221 7.07 0.25
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 2,943,424 84.83
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 2,943,424 84.83
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 2,943,424 84.83
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 2,943,424 84.83
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 2,943,424 84.83
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al
2024-02-13 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al 2,943,424 84.83
2023-11-27 13D KLNG / Koil Energy Solutions, Inc. Galloway Capital Partners, LLC 785,281 6.60
2023-06-30 13D DTI / Drilling Tools International Corporation HHEP-Directional, L.P. 16,481,336 55.40
2023-06-30 13D DTI / Drilling Tools International Corporation Prejean Robert Wayne 1,640,401 5.30
2023-06-30 13D DTI / Drilling Tools International Corporation Domino Michael Wayne Jr. 1,840,812 6.10
2023-02-21 13D KLNG / Koil Energy Solutions, Inc. MAZ Partners LP 827,496 7.00 -0.04
2023-02-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al
2023-02-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al
2023-02-14 13D/A HY / Hyster-Yale, Inc. Rankin Alfred M Et Al