Oil and Gas Field Services, Not Elsewhere Classified - 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)
2025-08-26 13D/A ENSV / Enservco Corporation Star Equity Fund, LP 9,024,035 15.50 0.00
2025-08-18 13D/A ACDC / ProFrac Holding Corp. THRC Holdings, LP 85,609,390 47.10 8.10
2025-07-07 13D/A KLXE / KLX Energy Services Holdings, Inc. Geveran Investments Ltd 322,339 1.80 -49.62
2025-05-30 13D/A RNGR / Ranger Energy Services, Inc. Leykum Charles S. 107,684 0.50 -96.98
2025-03-31 13D/A RNGR / Ranger Energy Services, Inc. Bayou Well Holdings Company, Llc 1,106,699 4.97 -40.60
2025-03-24 13D/A NESR / National Energy Services Reunited Corp. Mubbadrah Investment LLC 6,661,474 7.00 -17.70
2025-03-20 13D/A ACDC / ProFrac Holding Corp. Wilks Dan H. 80,930,264 49.60 2.13
2025-03-03 13D/A RES / RPC, Inc. Rollins Gary W 97,640,277 45.20 0.00
2025-01-23 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 530,879 4.30
2025-01-16 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 754,564 6.00 -4.82
2024-12-31 13D/A ACDC / ProFrac Holding Corp. Wilks Dan H. 79,240,293 49.50 14.66
2024-12-13 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 792,799 6.40 -4.46
2024-12-12 13D/A RNGR / Ranger Energy Services, Inc. Bayou Well Holdings Company, Llc 1,863,208 8.40 -17.27
2024-12-10 13D/A ENSV / Enservco Corporation Star Equity Fund, LP 9,024,035 15.51 0.00
2024-12-04 13D/A RNGR / Ranger Energy Services, Inc. Bayou Well Holdings Company, Llc 2,252,038 10.10 -64.24
2024-11-25 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 829,808 6.70 -9.05
2024-11-25 13D NGS / Natural Gas Services Group, Inc. Taylor Stephen Charles 605 4.86
2024-11-04 13D/A RNGR / Ranger Energy Services, Inc. Bayou Well Holdings Company, Llc 6,297,173 28.30 -39.54
2024-11-04 13D/A NESR / National Energy Services Reunited Corp. Olayan Saudi Holding Co 17,025,258 19.10 -19.14
2024-09-30 13D/A ACDC / ProFrac Holding Corp. THRC Holdings, LP 79,197,549 49.50 3.93
2024-08-16 13D ENSV / Enservco Corporation Star Equity Fund, LP 9,024,035 19.69
2024-08-12 13D/A NESR / National Energy Services Reunited Corp. Mubbadrah Investment LLC 8,094,137 11.00 -13.50
2024-05-31 13D/A ACDC / ProFrac Holding Corp. THRC Holdings, LP 76,200,545 47.60 7.49
2024-05-22 13D/A XPRO / Expro Group Holdings N.V. Oak Hill Advisors Lp 12,072,125 11.00 -18.29
2024-05-08 13D/A RNGR / Ranger Energy Services, Inc. Leykum Charles S. 3,568,140 15.60 -4.52
2024-05-03 13D/A PUMP / ProPetro Holding Corp. Exxon Mobil Corp 16,600,000 15.20
2024-03-26 13D/A RNGR / Ranger Energy Services, Inc. Leykum Charles S. 3,737,140 16.50 -7.57
2023-12-20 13D/A RNGR / Ranger Energy Services, Inc. Leykum Charles S. 4,043,140 16.60 -6.15
2023-12-05 13D/A RNGR / Ranger Energy Services, Inc. Leykum Charles S. 4,308,314 17.70 -6.51
2023-11-08 13D/A WTTR / Select Water Solutions, Inc. B-29 Gp, Llc 4,725,128 4.55 -17.47
2023-11-07 13D/A RNGR / Ranger Energy Services, Inc. Leykum Charles S. 4,608,314 18.80 -53.41
2023-10-04 13D/A WTTR / Select Water Solutions, Inc. Scf Gp Llc 4,327,587 4.20 -63.67
2023-09-27 13D/A RES / RPC, Inc. Rollins Gary W 97,640,277 45.10 0.00
2023-09-18 13D/A XPRO / Expro Group Holdings N.V. Oak Hill Advisors Lp 14,774,045 13.60 -16.88
2023-06-15 13D/A XPRO / Expro Group Holdings N.V. Oak Hill Advisors Lp 17,774,045 16.40 -10.66
2023-06-05 13D/A ACDC / ProFrac Holding Corp. THRC Holdings, LP 70,892,317 44.60
2023-05-18 13D/A KLXE / KLX Energy Services Holdings, Inc. Archer Ltd
2023-05-12 13D HLX / Helix Energy Solutions Group, Inc. Kratz Owen E 7,566,831 5.00 10.11
2023-05-03 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 912,408 7.30 0.82
2023-04-26 13D/A ACDC / ProFrac Holding Corp. Wilks Dan H. 69,110,369 43.50 278.32
2023-03-10 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 905,008 7.30 11.03
2023-01-30 13D/A ACDC / ProFrac Holding Corp. Wilks Dan H. 18,267,838 33.80 0.00
2023-01-20 13D/A XPRO / Expro Group Holdings N.V. Oak Hill Advisors Lp 19,895,891 18.30 -32.08
2023-01-11 13D/A NGS / Natural Gas Services Group, Inc. Hoak Public Equities, LP 1,150,000 9.26 0.00
2022-12-30 13D/A NGS / Natural Gas Services Group, Inc. Hoak Public Equities, LP 1,150,000 9.26 0.00
2022-12-23 13D/A NGS / Natural Gas Services Group, Inc. Mill Road Capital III, L.P. 815,108 6.60 -2.90
2022-12-16 13D/A WTTR / Select Water Solutions, Inc. Scf Gp Llc 11,910,756 12.10 -26.44
2022-12-09 13D/A NGS / Natural Gas Services Group, Inc. Hoak Public Equities, LP 1,150,000 9.26 15.00
2022-12-05 13D/A RES / RPC, Inc. Rollins Gary W 97,640,277 45.10 -20.52
2022-11-28 13D/A ACDC / ProFrac Holding Corp. Wilks Dan H. 18,267,157 33.90 22.15