![Ann Fox](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>)
Ann Fox
Chief Executive Officer at
NINE ENERGY SERVICE, INC.
Net worth: 2 M $ as of 2026-05-30
Profile
Ann G.
Fox is currently Chief Executive Officer at Big Lake Services LLC, Nine Energy Service LLC, CDK Perforating LLC, and Crest Pumping Technologies LLC.
Ms. Fox serves as President, CEO, Secretary & Director at Nine Energy Service, Inc. since 2015.
Ms. Fox is an Independent Director at Devon Energy Corp.
since 2019.
Ms. Fox holds director and member roles at American Petroleum Institute, Inc., Beckman Production Services LLC (President & Director), Groton School (Trustee), HBS Alumni Association (Member), The National Petroleum Council (Member), and James A. Baker III Institute for Public Policy (Member).
Former roles include Analyst at Prudential Securities and Warburg Dillon Read LLC, Principal at United States Marine Corps, and Vice President at SCF Partners LLC.
Education includes undergraduate studies at Georgetown University and an MBA from Harvard Business School.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
Devon Energy Corp.
 Devon Energy Corp. Integrated OilEnergy Minerals Engages in the exploration, development and production of oil and natural gas & NGLs activities 0% | 2026-05-17 | 43,676 ( 0% ) | 2 M $ | 2026-05-30 |
Ann Fox active positions
| Companies | Position | Start |
|---|---|---|
| NINE ENERGY SERVICE, INC. | Chief Executive Officer | 2015-06-30 |
Big Lake Services LLC
 Big Lake Services LLC Oilfield Services/EquipmentIndustrial Services Offers advanced equipment and services in oil and gas fields | Chief Executive Officer | - |
The National Petroleum Council
 The National Petroleum Council Miscellaneous Commercial ServicesCommercial Services Operates national petroleum council | Corporate Officer/Principal | - |
American Petroleum Institute, Inc.
 American Petroleum Institute, Inc. Wholesale DistributorsDistribution Services Wholesale crude petroleum and petroleum products from bulk liquid storage facilities | Director/Board Member | - |
Crest Pumping Technologies LLC
 Crest Pumping Technologies LLC Industrial MachineryProducer Manufacturing Provides pressure pumping services | Chief Executive Officer | - |
Nine Energy Service LLC
 Nine Energy Service LLC Gas DistributorsUtilities Distributes natural gas | Chief Executive Officer | - |
Groton School
 Groton School Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
HBS Alumni Association | Corporate Officer/Principal | - |
Devon Energy Corp.
Devon Energy Corp. Integrated OilEnergy Minerals Engages in the exploration, development and production of oil and natural gas & NGLs activities | Director/Board Member | 2019-06-04 |
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Former positions of Ann Fox
| Companies | Position | End |
|---|---|---|
| ░░░░░░░ ░░░░░░ ░░░░ ░░░ | ░░░░░░░░░░░░░░ | - |
| ░░░░░░░░░░ ░░░░░░░░░░ | ░░░░░░░░░░░░░░ | - |
| ░░░░░░ ░░░░░░ ░░░░░░ ░░░░░ | ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ | - |
| ░░░ ░░░░░░░░ ░░░ | ░░░░░░░ ░░░░░░ ░░░░░░░ | ░░░░░░░░░░ |
Training of Ann Fox
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
64
1st degree connections
18
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 18 |
|---|---|
Devon Energy Corp.
Devon Energy Corp. Integrated OilEnergy Minerals Engages in the exploration, development and production of oil and natural gas & NGLs activities | Energy Minerals |
Prudential Securities
 Prudential Securities Investment Banks/BrokersFinance Provides brokerage services | Finance |
Nine Energy Service, Inc.
 Nine Energy Service, Inc. Oilfield Services/EquipmentIndustrial Services Provides oilfield services | Industrial Services |
Warburg Dillon Read LLC
 Warburg Dillon Read LLC Investment Banks/BrokersFinance Provides securities brokerage services | Finance |
Groton School
Groton School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Georgetown University
 Georgetown University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
American Petroleum Institute, Inc.
American Petroleum Institute, Inc. Wholesale DistributorsDistribution Services Wholesale crude petroleum and petroleum products from bulk liquid storage facilities | Distribution Services |
The National Petroleum Council
The National Petroleum Council Miscellaneous Commercial ServicesCommercial Services Operates national petroleum council | Commercial Services |
United States Marine Corps
 United States Marine Corps SovereignGovernment Provides marine armed force services | Government |
James A. Baker III Institute for Public Policy
 James A. Baker III Institute for Public Policy Other Consumer ServicesConsumer Services Operates as professional universities | Consumer Services |
SCF Partners LLC
 SCF Partners LLC Investment ManagersFinance SCF Partners invests in companies located across the globe. The firm targets companies operating in the fields of oil & gas, renewable energy, mining and energy services sectors. It participates in buyout and growth stage capital transactions. | Finance |
Big Lake Services LLC
Big Lake Services LLC Oilfield Services/EquipmentIndustrial Services Offers advanced equipment and services in oil and gas fields | Industrial Services |
Nine Energy Service LLC
Nine Energy Service LLC Gas DistributorsUtilities Distributes natural gas | Utilities |
CDK Perforating LLC
 CDK Perforating LLC Oil & Gas ProductionEnergy Minerals Provides tubing conveyed perforating services | Energy Minerals |
Beckman Production Services LLC
 Beckman Production Services LLC Oilfield Services/EquipmentIndustrial Services Operates as an oil and gas services company | Industrial Services |
Crest Pumping Technologies LLC
Crest Pumping Technologies LLC Industrial MachineryProducer Manufacturing Provides pressure pumping services | Producer Manufacturing |
Harvard Business School
 Harvard Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
HBS Alumni Association |
- Stock Market
- Insiders
- Ann Fox
