![Joseph Mills](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Joseph Mills
Chief Executive Officer at
INTERNATIONAL BATTERY METALS LTD.
Net worth: 568 639 $ as of 31/05/2026
Profile
Joseph A. Mills founded Montierra Minerals & Production LP in 2006.
Mr. Mills also currently works at Samson Resources II LLC, as Chief Executive Officer & Director from 2023, International Battery Metals Ltd., as Chief Executive Officer & Director from 2025, Caliber Midstream Partners LLC, as Chairman from 2022, and various other companies.
Mr. Mills also formerly worked at Eagle Rock Energy Partners LP, as Chairman & Chief Executive Officer from 2007 to 2015, Eagle Rock Energy G&P LLC, as Chairman & Chief Executive Officer from 2007 to 2015, Eagle Rock Energy GP LP, as Chairman & Chief Executive Officer, and various other companies.
Mr. Mills received his undergraduate degree in 1982 from The University of Texas at Austin and Masters Business Admin degree in 1992 from the University of Houston.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
TALOS ENERGY, INC. 0.02% | 31/03/2026 | 38,762 ( 0.02% ) | 568 639 $ | 31/05/2026 |
| 04/02/2026 | 0 ( -.--% ) | - $ | 31/05/2026 |
Joseph Mills active positions
| Companies | Position | Start |
|---|---|---|
| RIVIERA RESOURCES, INC. | Director/Board Member | 09/01/2020 |
| INTERNATIONAL BATTERY METALS LTD. | Chief Executive Officer | 07/04/2025 |
Samson Resources II LLC
 Samson Resources II LLC Oil & Gas ProductionEnergy Minerals Operates as an oil and natural gas company which engages in the exploration, development and production of oil and natural gas from properties | Chief Executive Officer | 01/09/2023 |
Caliber Midstream Partners LLC
 Caliber Midstream Partners LLC Oilfield Services/EquipmentIndustrial Services Provides midstream and infrastructure services | Chairman | 01/03/2022 |
Liberty Resources, Inc.
 Liberty Resources, Inc. Medical/Nursing ServicesHealth Services Operates as a non profit organization that provides behavioral healthcare and social support services | Director/Board Member | 01/10/2020 |
National Association of Corporate Directors (Virginia)
 National Association of Corporate Directors (Virginia) Miscellaneous Commercial ServicesCommercial Services Provides online and print information services to directors of public companies | Corporate Officer/Principal | - |
Texas Pipeline Association
 Texas Pipeline Association Miscellaneous Commercial ServicesCommercial Services Texas Pipeline Association is a private company based in Austin, TX. | Director/Board Member | - |
American Association of Professional Landmen, Inc
 American Association of Professional Landmen, Inc Miscellaneous Commercial ServicesCommercial Services Operates association of professional landmen | Corporate Officer/Principal | - |
Houston Association of Professional Landmen | Corporate Officer/Principal | - |
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Former positions of Joseph Mills
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Training of Joseph Mills
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
79
1st degree connections
30
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 30 |
|---|---|
Orbital Infrastructure Group, Inc.
 Orbital Infrastructure Group, Inc. Engineering & ConstructionIndustrial Services Engages in the acquisition, development and commercialization of electro-mechanical products and technologies | Industrial Services |
Black Stone Minerals Co. LP
 Black Stone Minerals Co. LP Investment Trusts/Mutual FundsMiscellaneous Operates as a traded oil and natural gas mineral & royalty company | Miscellaneous |
El Paso Production Co.
 El Paso Production Co. Oil & Gas ProductionEnergy Minerals Explores natural gas and oil reserves | Energy Minerals |
Eagle Rock Energy Partners LP
 Eagle Rock Energy Partners LP Gas DistributorsUtilities Engages in gathering, compressing, treating, processing and transporting natural gas | Utilities |
Eagle Rock Energy G&P LLC
 Eagle Rock Energy G&P LLC Investment Trusts/Mutual FundsMiscellaneous Part of Grizzly Energy LLC, Eagle Rock Energy G & P LLC is a company based in Houston, TX. Scott W. Smith has been the CEO of the company since 2015. | Miscellaneous |
Eagle Rock Energy GP LP
 Eagle Rock Energy GP LP Investment Trusts/Mutual FundsMiscellaneous Part of Grizzly Energy LLC, Eagle Rock Energy GP LP is an American company. Scott W. Smith has been the CEO of the company since 2015. | Miscellaneous |
Montierra Management LLC
 Montierra Management LLC Investment Trusts/Mutual FundsMiscellaneous Operates as an investment firm | Miscellaneous |
International Battery Metals Ltd.
 International Battery Metals Ltd. Chemicals: SpecialtyProcess Industries Mines for tin, lithium, and other minerals | Process Industries |
Samson Resources Co.
 Samson Resources Co. Oil & Gas ProductionEnergy Minerals Engages in the exploration and extraction of oil and gas | Energy Minerals |
The University of Texas at Austin
 The University of Texas at Austin Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Houston
 University of Houston Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Independent Petroleum Association of America
 Independent Petroleum Association of America Industrial SpecialtiesProcess Industries Manufactures oil and natural gas | Process Industries |
American Association of Professional Landmen, Inc
American Association of Professional Landmen, Inc Miscellaneous Commercial ServicesCommercial Services Operates association of professional landmen | Commercial Services |
National Association of Corporate Directors (Virginia)
National Association of Corporate Directors (Virginia) Miscellaneous Commercial ServicesCommercial Services Provides online and print information services to directors of public companies | Commercial Services |
Montierra Minerals & Production LP
 Montierra Minerals & Production LP Other Metals/MineralsNon-Energy Minerals Acquires, invests in and actively manages oil and gas mineral and royalty interests | Non-Energy Minerals |
Texas Pipeline Association
Texas Pipeline Association Miscellaneous Commercial ServicesCommercial Services Texas Pipeline Association is a private company based in Austin, TX. | Commercial Services |
SONAT Exploration Co.
 SONAT Exploration Co. Oil & Gas ProductionEnergy Minerals Provides petroleum and natural gas exploration services | Energy Minerals |
Texas Independent Producers & Royalty Owners Association
 Texas Independent Producers & Royalty Owners Association Miscellaneous Commercial ServicesCommercial Services Texas Independent Producers & Royalty Owners Association (TIPRO) is a non-profit trade association representing nearly 3,000 members involved in the oil and natural gas industry, including independent producers, royalty owners, landowners, and service companies. The private company is based in Austin, TX. The association focuses on advocacy at the state and federal levels regarding regulatory, environmental, tax, and trade issues affecting the industry. TIPRO provides legislative and regulatory support, networking opportunities, educational programs, and industry intelligence to its members. It hosts events such as an annual convention, summer conference, monthly industry luncheons, and regional forums, and publishes newsletters, magazines, and special reports. TIPRO also offers resources like live commodity prices and a young leaders student program, and educates on topics such as royalty interests and the economic impact of mineral rights leasing. The association collaborates with other organizations to promote public awareness about industry operations, safety, and economic contributions. | Commercial Services |
Houston Association of Professional Landmen | |
Texas Alliance of Energy Producers
 Texas Alliance of Energy Producers Miscellaneous Commercial ServicesCommercial Services Operates as a oil and gas trade association | Commercial Services |
Liberty Resources, Inc.
Liberty Resources, Inc. Medical/Nursing ServicesHealth Services Operates as a non profit organization that provides behavioral healthcare and social support services | Health Services |
Samson Resources Corp.
 Samson Resources Corp. Oil & Gas ProductionEnergy Minerals Explores, develops, and produces oil and natural gas | Energy Minerals |
Caliber Midstream Partners LLC
Caliber Midstream Partners LLC Oilfield Services/EquipmentIndustrial Services Provides midstream and infrastructure services | Industrial Services |
Samson Resources II LLC
Samson Resources II LLC Oil & Gas ProductionEnergy Minerals Operates as an oil and natural gas company which engages in the exploration, development and production of oil and natural gas from properties | Energy Minerals |
Talos Energy, Inc.
 Talos Energy, Inc. Oil & Gas ProductionEnergy Minerals Provides oil and gas exploration services in the gulf of Mexico region | Energy Minerals |
Riviera Resources, Inc.
 Riviera Resources, Inc. Integrated OilEnergy Minerals Exploration and production of oil and natural gas | Energy Minerals |
Roan Resources, Inc.
 Roan Resources, Inc. Integrated OilEnergy Minerals Operates as an oil and natural gas exploration and production company | Energy Minerals |
Hawks Acquisition Corp.
 Hawks Acquisition Corp. Financial ConglomeratesFinance Operates as a blank check company | Finance |
Quarternorth Energy Holding, Inc.
 Quarternorth Energy Holding, Inc. Financial ConglomeratesFinance Functions as an investment holding company | Finance |
Cui Global, Inc. |
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