David Thomas

Chairman at GULF KEYSTONE PETROLEUM LIMITED

69 year

Energy Minerals

Industrial Services

Consumer Services

Profile

David Howard Thomas was the founder of RioTech Pharmaceuticals Ltd. since 2001, holding the title of Chairman.
Current jobs include Chief Executive Officer & Director at Cheiron Holdings Ltd., Chairman at Gulf Keystone Petroleum Ltd. since 2024, Non-Executive Director at Gulf Keystone Petroleum (UK) Ltd. since 2016, and Non-Executive Director at Cheiron Petroleum Corp.
Former jobs include Chief Executive Officer & Director at Melrose Resources Plc from 2007 to 2012, Chief Operating Officer & Executive Director at Afren Plc, President & Chief Operating Officer at Centurion Energy International, Inc., Petroleum Engineer at Conoco, Inc. from 1978 to 1995, Chief Operating Officer at Petroceltic International Ltd. (Ireland) from 2014 to 2015, Group General Manager-Operations at LASMO Plc, and Vice President at Eni MOG Ltd. Education includes a graduate degree from Imperial College London and an undergraduate degree from The University of Nottingham.

David Thomas active positions

Companies	Position	Start
GULF KEYSTONE PETROLEUM LIMITED	Chairman	05/09/2024
Cheiron Holdings Ltd. Cheiron Holdings Ltd. Contract DrillingIndustrial Services Provides oil and gas exploration and production services	Chief Executive Officer	-
Cheiron Petroleum Corp. Cheiron Petroleum Corp. Oilfield Services/EquipmentIndustrial Services Operates as an oil and gas production, development and exploration	Director/Board Member	-
Gulf Keystone Petroleum (UK) Ltd. Gulf Keystone Petroleum (UK) Ltd. Contract DrillingIndustrial Services Engages in oil and gas exploration and production	Director/Board Member	30/09/2016

All active positions of David Thomas

Former positions of David Thomas

Companies	Position	End
PETROCELTIC INTERNATIONAL PLC	Chief Operating Officer	29/04/2015
Melrose Resources Plc Melrose Resources Plc Contract DrillingIndustrial Services Explores, develops and produces oil and gas	President	10/10/2012
Conoco, Inc. Conoco, Inc. Oil Refining/MarketingEnergy Minerals Explores, refines and sells crude oil, natural gas & related lubricants	Corporate Officer/Principal	-
Eni MOG Ltd.	Corporate Officer/Principal	-
AFREN PLC	Chief Operating Officer	-

See the detail of David Thomas's experience

Training of David Thomas

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of David Thomas's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	14
Centurion Energy International, Inc. Centurion Energy International, Inc. Oil & Gas ProductionEnergy Minerals Explores and produces oil and natural gas	Energy Minerals
Conoco, Inc. Conoco, Inc. Oil Refining/MarketingEnergy Minerals Explores, refines and sells crude oil, natural gas & related lubricants	Energy Minerals
Gulf Keystone Petroleum Ltd. Gulf Keystone Petroleum Ltd. Oil & Gas ProductionEnergy Minerals Operates as a holding company, which engages in the exploration, production, and sale of crude oil	Energy Minerals
Afren Plc Afren Plc Oil & Gas ProductionEnergy Minerals Engages in the business of oil and gas exploration, development and production	Energy Minerals
RioTech Pharmaceuticals Ltd. RioTech Pharmaceuticals Ltd. Pharmaceuticals: MajorHealth Technology Develops novel therapeutic drugs for hepatitis C virus	Health Technology
Melrose Resources Plc Melrose Resources Plc Contract DrillingIndustrial Services Explores, develops and produces oil and gas	Industrial Services
Petroceltic International Ltd. (Ireland) Petroceltic International Ltd. (Ireland) MiscellaneousMiscellaneous Functions as an investment holding company	Miscellaneous
Imperial College London Imperial College London Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
LASMO Plc LASMO Plc Oil & Gas ProductionEnergy Minerals Explores for and produces oil and gas	Energy Minerals
The University of Nottingham The University of Nottingham Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Eni MOG Ltd.
Gulf Keystone Petroleum (UK) Ltd. Gulf Keystone Petroleum (UK) Ltd. Contract DrillingIndustrial Services Engages in oil and gas exploration and production	Industrial Services
Cheiron Holdings Ltd. Cheiron Holdings Ltd. Contract DrillingIndustrial Services Provides oil and gas exploration and production services	Industrial Services
Cheiron Petroleum Corp. Cheiron Petroleum Corp. Oilfield Services/EquipmentIndustrial Services Operates as an oil and gas production, development and exploration	Industrial Services