![William Guest](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>)
William Guest
Chief Executive Officer at
VALEURA ENERGY INC.
Net worth: 14 M $ as of 31/05/2026
Profile
Dr. William S.
Guest is a President, Chief Executive Officer & Director at Valeura Energy, Inc. and a President & Chief Executive Office at Thrace Basin Natural Gas (Türkiye) Corporation.
He is on the Board of Directors at Borders & Southern Petroleum Plc, Valeura Energy, Inc., Pathfinder Oil & Gas, Inc. and Valeura Energy Asia Pte Ltd. Dr. Guest was previously employed as a Chief Executive Officer & Director by Bukit Energy, Inc. and a Chief Executive Officer by Pexco Energy.
He received his undergraduate degree from Queen's University and a doctorate degree from Queen's University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
VALEURA ENERGY INC. 1.61% | 31/03/2026 | 1,693,919 ( 1.61% ) | 13 M $ | 31/05/2026 |
| 31/12/2025 | 1,666,667 ( 0.19% ) | 260 600 $ | 31/05/2026 |
William Guest active positions
| Companies | Position | Start |
|---|---|---|
| VALEURA ENERGY INC. | Chief Executive Officer | 01/01/2018 |
| BORDERS & SOUTHERN PETROLEUM PLC | Director/Board Member | 16/06/2024 |
Pathfinder Oil & Gas, Inc.
 Pathfinder Oil & Gas, Inc. Contract DrillingIndustrial Services Provides oil and gas exploration services | Director/Board Member | - |
Thrace Basin Natural Gas (Türkiye) Corporation
 Thrace Basin Natural Gas (Türkiye) Corporation Contract DrillingIndustrial Services Explores for oil and gas | Chief Executive Officer | - |
Valeura Energy Asia Pte Ltd.
 Valeura Energy Asia Pte Ltd. Finance/Rental/LeasingFinance Operates as a special purpose vehicle company | Director/Board Member | - |
Former positions of William Guest
| Companies | Position | End |
|---|---|---|
Bukit Energy, Inc.
 Bukit Energy, Inc. Oil & Gas ProductionEnergy Minerals Explores oil and gas | Chief Executive Officer | 01/03/2017 |
Pexco Energy | Chief Executive Officer | 01/11/2013 |
Training of William Guest
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
85
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Valeura Energy, Inc.
 Valeura Energy, Inc. Oil & Gas ProductionEnergy Minerals Engages in the exploration, development and production of petroleum and natural gas | Energy Minerals |
Borders & Southern Petroleum Plc
 Borders & Southern Petroleum Plc Oil & Gas ProductionEnergy Minerals Operates as an independent oil and gas exploration company | Energy Minerals |
Queen's University
 Queen's University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Thrace Basin Natural Gas (Türkiye) Corporation
Thrace Basin Natural Gas (Türkiye) Corporation Contract DrillingIndustrial Services Explores for oil and gas | Industrial Services |
Bukit Energy, Inc.
Bukit Energy, Inc. Oil & Gas ProductionEnergy Minerals Explores oil and gas | Energy Minerals |
Pathfinder Oil & Gas, Inc.
Pathfinder Oil & Gas, Inc. Contract DrillingIndustrial Services Provides oil and gas exploration services | Industrial Services |
Pexco Energy | |
Valeura Energy Asia Pte Ltd.
Valeura Energy Asia Pte Ltd. Finance/Rental/LeasingFinance Operates as a special purpose vehicle company | Finance |
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