J. Sell

Chief Executive Officer at

X Energy LLC

Net worth: 69 M $ as of 2026-08-30

59 year

67 connections

Consumer Services

Utilities

Energy Minerals

Profile

J.
Clay Sell is Chief Executive Officer & Executive Director at X-Energy, Inc. since 2021.
Mr. Sell is Chief Executive Officer at X-Energy Reactor Co. LLC.
Mr. Sell is Chief Executive Officer at X Energy LLC since 2019.
Mr. Sell is Director at Nuclear Energy Institute since 2020.
Mr. Sell was President at Hunt Energy Horizons LLC from 2008 to 2018.
Mr. Sell completed undergraduate studies at Texas Tech University and graduate studies at The University of Texas School of Law.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
1.3%	2026-04-23	3,747,172 ( 1.3% )	69 M $	2026-08-30

J. Sell active positions

Companies	Position	Start
Nuclear Energy Institute Nuclear Energy Institute Electric UtilitiesUtilities Provides policy-making process for the nuclear energy and technology industries	Director/Board Member	2020-05-25
X-Energy Reactor Co. LLC X-Energy Reactor Co. LLC Electric UtilitiesUtilities Produces nuclear powers	Chief Executive Officer	-
X Energy LLC X Energy LLC Industrial MachineryProducer Manufacturing Develops and manufactures nuclear reactors and fuel technology	Chief Executive Officer	2018-12-31

All active positions of J. Sell

Former positions of J. Sell

Companies	Position	End
Hunt Energy Horizons LLC Hunt Energy Horizons LLC Oil & Gas ProductionEnergy Minerals Hunt Energy Horizons LLC operates a diversified portfolio across multiple sectors including oil and gas exploration and production, refining, liquefied natural gas (LNG), power generation, real estate, investments, ranching, and infrastructure. The company is based in Dallas, TX. Key subsidiaries include Hunt Oil Company, an independent oil and gas producer, and Hunt Refining Company, which supplies petroleum products domestically and internationally. The company has been involved in energy projects such as LNG plants and major LNG ventures, as well as real estate developments and infrastructure projects.	President	2017-12-31

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Training of J. Sell

Experiences
Positions held

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Private companies

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Linked companies

Private companies	6
Texas Tech University Texas Tech University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Nuclear Energy Institute Nuclear Energy Institute Electric UtilitiesUtilities Provides policy-making process for the nuclear energy and technology industries	Utilities
The University of Texas School of Law The University of Texas School of Law Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Hunt Energy Horizons LLC Hunt Energy Horizons LLC Oil & Gas ProductionEnergy Minerals Hunt Energy Horizons LLC operates a diversified portfolio across multiple sectors including oil and gas exploration and production, refining, liquefied natural gas (LNG), power generation, real estate, investments, ranching, and infrastructure. The company is based in Dallas, TX. Key subsidiaries include Hunt Oil Company, an independent oil and gas producer, and Hunt Refining Company, which supplies petroleum products domestically and internationally. The company has been involved in energy projects such as LNG plants and major LNG ventures, as well as real estate developments and infrastructure projects.	Energy Minerals
X Energy LLC X Energy LLC Industrial MachineryProducer Manufacturing Develops and manufactures nuclear reactors and fuel technology	Producer Manufacturing
X-Energy Reactor Co. LLC X-Energy Reactor Co. LLC Electric UtilitiesUtilities Produces nuclear powers	Utilities