William Hickey

Chief Executive Officer at EARTHSTONE ENERGY, INC.

Net worth: 555 M $ as of 2026-05-30

39 year

14 connections

Energy Minerals

Consumer Services

Finance

Profile

William M.
Hickey is the founder of Colgate Energy LLC, founded in 2015, where the title held is Co-President & Co-Chief Executive Officer.
Current jobs include Co-Chief Executive Officer at Earthstone Energy, Inc., Co-Chief Executive Officer & Director at Permian Resources Corp.
starting in 2026, Co-Chief Executive Officer & Director at Permian Resources Holdings, Inc. starting in 2022, and Co-Chief Executive Officer at Permian Resources Operating LLC.
Former jobs include Co-Chief Executive Officer at Colgate Energy Partners III LLC and Associate at EnCap Investments LP.
Education includes an MBA from Southern Methodist University and undergraduate studies at The University of Texas at Austin.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
Permian Resources Operating LLC Permian Resources Operating LLC Integrated OilEnergy Minerals Engage in the acquisition and development of oil and gas properties 6.11%	2022-12-30	16,467,681 ( 6.11% )	317 M $	2026-05-30
1.66%	2026-03-23	12,379,394 ( 1.66% )	238 M $	2026-05-30

William Hickey active positions

Companies	Position	Start
EARTHSTONE ENERGY, INC.	Chief Executive Officer	-
Colgate Energy LLC Colgate Energy LLC Integrated OilEnergy Minerals Provides oil exploration and production services	Chief Executive Officer	2014-12-31
Permian Resources Corp. Permian Resources Corp. Integrated OilEnergy Minerals Operates crude oil and liquids-rich natural gas reserves	Chief Executive Officer	2022-08-31
Permian Resources Operating LLC Permian Resources Operating LLC Integrated OilEnergy Minerals Engage in the acquisition and development of oil and gas properties	Chief Executive Officer	-

All active positions of William Hickey

Former positions of William Hickey

Companies	Position	End
EnCap Investments LP EnCap Investments LP Investment ManagersFinance EnCap Investments seeks investment opportunities in companies located in the United States. The firm targets businesses operating mainly in the energy sector. It provides equity financing for early, later and growth stage capital requirements.	Private Equity Analyst	-
Colgate Energy Partners III LLC Colgate Energy Partners III LLC Integrated OilEnergy Minerals Engages in oil and natural gas acquisition, development, exploration & production activities	Chief Executive Officer	-

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Training of William Hickey

Experiences
Positions held

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Inactive

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Private companies

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Connections

1st degree connections

1st degree companies

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Members of the board

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Linked companies

Private companies	8
Earthstone Energy, Inc. Earthstone Energy, Inc. Integrated OilEnergy Minerals Engages in exploration and production of crude oil & natural gas	Energy Minerals
EnCap Investments LP EnCap Investments LP Investment ManagersFinance EnCap Investments seeks investment opportunities in companies located in the United States. The firm targets businesses operating mainly in the energy sector. It provides equity financing for early, later and growth stage capital requirements.	Finance
Southern Methodist University Southern Methodist University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
The University of Texas at Austin The University of Texas at Austin Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Permian Resources Operating LLC Permian Resources Operating LLC Integrated OilEnergy Minerals Engage in the acquisition and development of oil and gas properties	Energy Minerals
Colgate Energy LLC Colgate Energy LLC Integrated OilEnergy Minerals Provides oil exploration and production services	Energy Minerals
Permian Resources Corp. Permian Resources Corp. Integrated OilEnergy Minerals Operates crude oil and liquids-rich natural gas reserves	Energy Minerals
Colgate Energy Partners III LLC Colgate Energy Partners III LLC Integrated OilEnergy Minerals Engages in oil and natural gas acquisition, development, exploration & production activities	Energy Minerals