![A. Tonken](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>)
A. Tonken
Founder at
BIRCHCLIFF ENERGY LTD.
Net worth: 7 M $ as of 31/05/2026
Profile
A. Jeffery Tonken is the founder of Birchcliff Energy Ltd., founded in 2004, where the title held is Chairman since 2023.
Mr. Tonken was the founder of Stampeder Exploration Ltd., founded in 1987, where the title held was President & Chief Executive Officer.
Mr. Tonken is also the founder of Case Resources, Inc.,Big Bear Exploration Ltd...
Mr. Tonken currently serves as a Director at Rockies Lng Partners Corp.
and as a Member of the Law Society of Alberta.
Former positions include Director at Daylight Resources Trust from 2004 to 2010, Director at Daylight Energy Ltd. from 2004 to 2012, Partner at Borden Ladner Gervais LLP, Partner at Howard Mackie, and Member-Governors Board at the Canadian Association of Petroleum Producers.
Education includes graduate studies at the University of Wales (Bangor) and undergraduate studies at the University of Alberta.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 13/06/2025 | 1,482,471 ( 0.54% ) | 7 M $ | 31/05/2026 |
A. Tonken active positions
| Companies | Position | Start |
|---|---|---|
| BIRCHCLIFF ENERGY LTD. | Founder | 06/07/2004 |
Law Society of Alberta
 Law Society of Alberta Miscellaneous Commercial ServicesCommercial Services Operates membership based lawyers organization to regulates legal profession | Corporate Officer/Principal | - |
Former positions of A. Tonken
| Companies | Position | End |
|---|---|---|
Canadian Association of Petroleum Producers
 Canadian Association of Petroleum Producers Miscellaneous Commercial ServicesCommercial Services Operates as a Canadian association of petroleum producers | Chairman | - |
Daylight Energy Ltd.
 Daylight Energy Ltd. Contract DrillingIndustrial Services Explores oil and gas | Director/Board Member | 12/01/2012 |
Daylight Resources Trust
 Daylight Resources Trust Investment Trusts/Mutual FundsMiscellaneous Unit Investment Trust | Director/Board Member | 18/05/2010 |
Borden Ladner Gervais LLP
 Borden Ladner Gervais LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services | Corporate Officer/Principal | - |
Case Resources, Inc.
 Case Resources, Inc. Oil & Gas ProductionEnergy Minerals Explores for, produces, and develops oil and gas properties | Chief Executive Officer | - |
Training of A. Tonken
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
48
1st degree connections
12
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Case Resources, Inc.
Case Resources, Inc. Oil & Gas ProductionEnergy Minerals Explores for, produces, and develops oil and gas properties | Energy Minerals |
Daylight Resources Trust
Daylight Resources Trust Investment Trusts/Mutual FundsMiscellaneous Unit Investment Trust | Miscellaneous |
Borden Ladner Gervais LLP
Borden Ladner Gervais LLP Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
Howard Mackie
 Howard Mackie Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
University of Wales (Bangor)
 University of Wales (Bangor) Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Alberta
 University of Alberta Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Birchcliff Energy Ltd.
 Birchcliff Energy Ltd. Integrated OilEnergy Minerals Engages in the exploration, development and production of oil and natural gas | Energy Minerals |
Stampeder Exploration Ltd.
 Stampeder Exploration Ltd. Oilfield Services/EquipmentIndustrial Services Produces oil and gas | Industrial Services |
Big Bear Exploration Ltd.
 Big Bear Exploration Ltd. Oil & Gas ProductionEnergy Minerals Explores oil and gas | Energy Minerals |
Law Society of Alberta
Law Society of Alberta Miscellaneous Commercial ServicesCommercial Services Operates membership based lawyers organization to regulates legal profession | Commercial Services |
Canadian Association of Petroleum Producers
Canadian Association of Petroleum Producers Miscellaneous Commercial ServicesCommercial Services Operates as a Canadian association of petroleum producers | Commercial Services |
Daylight Energy Ltd.
Daylight Energy Ltd. Contract DrillingIndustrial Services Explores oil and gas | Industrial Services |
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