![John Dielwart](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>)
John Dielwart
Chairman at
TRANSALTA CORPORATION
Net worth: 986 342 $ as of 2026-05-30
Profile
John Patrick Dielwart is a businessperson who founded ARC Resources Ltd. and who has been at the helm of 6 different companies. Currently, he is Chairman at TransAlta Corp. and Vice-Chairman and Director at ARC Financial Corp. He is also Co-Chairman for Sheldon Kennedy Child Advocacy Centre and Member of Association of Professional Engineers & Geoscientists of AB and on the board of 6 other companies. In his past career he held the position of Chairman at Denbury, Inc., Chairman-Governors Board at Canadian Association of Petroleum Producers and President & Chief Executive Officer at ARC Energy Trust. Mr. Dielwart received an undergraduate degree from the University of Calgary.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-03-31 | 69,363 ( 0.02% ) | 986 342 $ | 2026-05-30 |
John Dielwart active positions
| Companies | Position | Start |
|---|---|---|
| TRANSALTA CORPORATION | Chairman | 2020-04-20 |
| VEREN | Director/Board Member | 2019-03-06 |
Association of Professional Engineers & Geoscientists of AB
 Association of Professional Engineers & Geoscientists of AB Miscellaneous Commercial ServicesCommercial Services Operates an association for practices of engineering and geoscience | Corporate Officer/Principal | - |
Aspenleaf Energy Ltd.
 Aspenleaf Energy Ltd. Contract DrillingIndustrial Services Engages in oil and gas exploration and production | Director/Board Member | - |
Modern Resources Ltd.
 Modern Resources Ltd. Contract DrillingIndustrial Services Provides oil and gas exploration services | Director/Board Member | - |
Sheldon Kennedy Child Advocacy Centre | Chairman | - |
ARC Financial Corp.
 ARC Financial Corp. Investment ManagersFinance ARC Financial invests in companies located in Canada. The firm focuses on companies operating in the fields of exploration & production, oil & gas and sustainable energy industries. It participates in early and growth stage capital requirements with an investment size ranging from USD 50 - 200 million. | Private Equity Investor | - |
Calgary & Area Child Advocacy Centre | Director/Board Member | - |
Former positions of John Dielwart
| Companies | Position | End |
|---|---|---|
| DENBURY INC. | Chairman | 2020-09-17 |
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Training of John Dielwart
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
63
1st degree connections
15
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 15 |
|---|---|
Denbury, Inc.
 Denbury, Inc. Integrated OilEnergy Minerals Engages in exploitation, drilling and extraction of oil and natural gas properties | Energy Minerals |
Tesco Corp.
 Tesco Corp. Oilfield Services/EquipmentIndustrial Services Engages in the business of designing, manufacturing and providing service delivery of technology based solutions | Industrial Services |
TransAlta Corp.
 TransAlta Corp. Electric UtilitiesUtilities Engages in generation and distribution of gas and electricity | Utilities |
ARC Energy Trust
 ARC Energy Trust Investment Trusts/Mutual FundsMiscellaneous Closed-End Investment Fund/Investment Trust | Miscellaneous |
ARC Resources Ltd.
 ARC Resources Ltd. Oil & Gas ProductionEnergy Minerals Engages in the exploration, development and production of crude oil and natural gas | Energy Minerals |
Aspenleaf Energy Ltd.
Aspenleaf Energy Ltd. Contract DrillingIndustrial Services Engages in oil and gas exploration and production | Industrial Services |
ARC Financial Corp.
ARC Financial Corp. Investment ManagersFinance ARC Financial invests in companies located in Canada. The firm focuses on companies operating in the fields of exploration & production, oil & gas and sustainable energy industries. It participates in early and growth stage capital requirements with an investment size ranging from USD 50 - 200 million. | Finance |
University of Calgary
 University of Calgary Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Association of Professional Engineers & Geoscientists of AB
Association of Professional Engineers & Geoscientists of AB Miscellaneous Commercial ServicesCommercial Services Operates an association for practices of engineering and geoscience | 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 |
Veren, Inc.
 Veren, Inc. Integrated OilEnergy Minerals Engages in the exploration of natural gas and petroleum | Energy Minerals |
Modern Resources, Inc.
 Modern Resources, Inc. Integrated OilEnergy Minerals Provides crude oil and natural gas exploration and production services | Energy Minerals |
Modern Resources Ltd.
Modern Resources Ltd. Contract DrillingIndustrial Services Provides oil and gas exploration services | Industrial Services |
Sheldon Kennedy Child Advocacy Centre | |
Calgary & Area Child Advocacy Centre |
- Stock Market
- Insiders
- John Dielwart
