![Martin Ryan](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>)
Martin Ryan
President at
GSF Energy LLC
Net worth: 280 $ as of 2026-06-29
Profile
Martin Leonard Ryan is currently President at GSF Energy LLC.
Formerly, Mr. Ryan was President & Chief Executive Officer at Montauk Energy Capital LLC from 2016 to 2019, Chief Executive Officer & Executive Director at Montauk Holdings Ltd. from 2016 to 2019, Vice President & General Counsel at Montauk Energy Holdings LLC from 2007 to 2016, Legal Director at Duquesne Light Co. from 1999 to 2007, and Associate at Keevican Weiss & Bauerle LLC from 1995 to 1999.
Education includes an undergraduate degree from the University of Dayton in 1992 and a graduate degree from Duquesne University School of Law in 1995.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
China Banking Corp.
 China Banking Corp. Major BanksFinance Provides commercial and international banking services 0% | 2025-12-30 | 300 ( 0% ) | 280 $ | 2026-06-29 |
Martin Ryan active positions
| Companies | Position | Start |
|---|---|---|
GSF Energy LLC
 GSF Energy LLC Oil & Gas ProductionEnergy Minerals Engages in oil and gas production activities | President | - |
Former positions of Martin Ryan
| Companies | Position | End |
|---|---|---|
| MONTAUK HOLDINGS LIMITED | Chief Executive Officer | 2019-09-29 |
Montauk Energy Capital LLC
 Montauk Energy Capital LLC Oil & Gas ProductionEnergy Minerals Develops, owns and operates large scale renewable energy projects utilizing landfill methane | Chief Executive Officer | 2019-08-31 |
| DUQUESNE LIGHT COMPANY | General Counsel | 2007-03-31 |
Keevican Weiss & Bauerle LLC
 Keevican Weiss & Bauerle LLC Miscellaneous Commercial ServicesCommercial Services Provides legal services | Corporate Officer/Principal | 1999-10-31 |
Montauk Energy Holdings LLC
 Montauk Energy Holdings LLC Oil & Gas ProductionEnergy Minerals Engages in oil and gas exploration and production | Chief Executive Officer | - |
Training of Martin Ryan
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
71
1st degree connections
8
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 8 |
|---|---|
Duquesne Light Co.
 Duquesne Light Co. Electric UtilitiesUtilities Supplies electricity | Utilities |
Keevican Weiss & Bauerle LLC
Keevican Weiss & Bauerle LLC Miscellaneous Commercial ServicesCommercial Services Provides legal services | Commercial Services |
University of Dayton
 University of Dayton Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Montauk Energy Capital LLC
Montauk Energy Capital LLC Oil & Gas ProductionEnergy Minerals Develops, owns and operates large scale renewable energy projects utilizing landfill methane | Energy Minerals |
GSF Energy LLC
GSF Energy LLC Oil & Gas ProductionEnergy Minerals Engages in oil and gas production activities | Energy Minerals |
Duquesne University School of Law
 Duquesne University School of Law Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Montauk Holdings Ltd.
 Montauk Holdings Ltd. MiscellaneousMiscellaneous Functions as an investment holding company | Miscellaneous |
Montauk Energy Holdings LLC
Montauk Energy Holdings LLC Oil & Gas ProductionEnergy Minerals Engages in oil and gas exploration and production | Energy Minerals |
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