Oil And Gas Field Services - 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)
2026-05-20 13D/A PUMP / ProPetro Holding Corp. Exxon Mobil Corp 0 0.00 -100.00
2026-04-21 13D/A BR:F1IS34 / Fiserv, Inc. - Depositary Receipt (Common Stock) Oak Hill Advisors Lp 11,961,960 10.50
2026-02-17 13D/A NESR / National Energy Services Reunited Corp. Mubbadrah Investment LLC 4,278,532 4.25 -16.86
2026-02-13 13D VAL / Valaris Limited Transocean Ltd. 12,573,155 18.10
2026-02-11 13D/A RIG / Transocean Ltd. Frederik W. Mohn 96,918,301 8.80 1.57
2026-02-11 13D/A VAL / Valaris Limited Oak Hill Advisors Lp 4,797,337 6.93 0.66
2026-02-11 13D/A VAL / Valaris Limited Famatown Finance Ltd 7,812,190 11.23 4.14
2026-01-26 13D/A NGS / Natural Gas Services Group, Inc. Hoak Public Equities, LP 575,000 4.57 -31.39
2026-01-07 13D/A NGS / Natural Gas Services Group, Inc. Hoak Public Equities, LP 838,128 6.67 -27.12
2026-01-05 13D/A DWSN / Dawson Geophysical Company Wilks Dan H. 24,658,746 79.42 0.00
2025-11-26 13D/A NSFDF / NXT Energy Solutions Inc. Mork Capital Management, LLC 37,576,821 32.30 23.10
2025-11-24 13D/A NESR / National Energy Services Reunited Corp. Mubbadrah Investment LLC 5,146,010 5.10 -22.75
2025-10-29 13D/A DWSN / Dawson Geophysical Company Wilks Dan H. 24,658,746 79.42 -0.00
2025-09-30 13D/A RIG / Transocean Ltd. Frederik W. Mohn 95,418,301 10.10
2025-09-17 13D/A HPK / HighPeak Energy, Inc. HighPeak Energy Partners, LP 44,498,461 35.30
2025-09-17 13D/A HPK / HighPeak Energy, Inc. Dejoria John Paul 15,457,152 12.25 -22.27
2025-09-17 13D/A HPK / HighPeak Energy, Inc. Hightower Jack 13,084,131 9.80 -86.17
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
2025-06-27 13D/A NSFDF / NXT Energy Solutions Inc. Mork Capital Management, LLC 30,526,321 28.00 0.00
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
2025-03-05 13D/A VAL / Valaris Limited Famatown Finance Ltd 7,501,913 10.56 12.03
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
2024-11-29 13D/A VAL / Valaris Limited Famatown Finance Ltd 6,696,396 9.42 12.32
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
2024-11-08 13D/A NE / Noble Corporation plc APMH Invest A/S 30,350,703 18.93 4.58
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
2024-09-26 13D/A VAL / Valaris Limited Famatown Finance Ltd 5,962,122 8.20 10.61
2024-09-05 13D/A NE / Noble Corporation plc APMH Invest A/S 29,020,703 17.35 0.00
2024-09-04 13D/A HPK / HighPeak Energy, Inc. Hightower Jack 94,631,774 69.80 0.06
2024-08-29 13D/A HPK / HighPeak Energy, Inc. Hightower Jack 94,577,869 69.80
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
2024-07-15 13D/A NE / Noble Corporation plc APMH Invest A/S 29,020,703 20.31 4.05
2024-06-04 13D/A NSFDF / NXT Energy Solutions Inc. Mork Capital Management, LLC 30,526,321 32.58
2024-05-31 13D/A ACDC / ProFrac Holding Corp. THRC Holdings, LP 76,200,545 47.60 7.49