Mark Duff
Chief Executive Officer at PERMA-FIX ENVIRONMENTAL SERVICES, INC.
Net worth: 1 M $ as of 2024-03-30
Mark Duff active positions
| Companies | Position | Start | End |
|---|---|---|---|
| PERMA-FIX ENVIRONMENTAL SERVICES, INC. | Director/Board Member | 2023-04-19 | - |
| Chief Executive Officer | 2017-09-07 | - | |
| President | 2017-09-07 | - | |
| Chief Operating Officer | 2016-09-29 | 2017-09-10 | |
| Corporate Officer/Principal | 2016-05-14 | 2016-09-29 | |
Safety & Ecology Holdings Corp.
 Safety & Ecology Holdings Corp. Miscellaneous Commercial ServicesCommercial Services Safety & Ecology Holdings Corp. provides environmental, infrastructure and nuclear energy services. It offers construction, remediation, and demolition services, such as facility deactivation, decontamination, site closure, threat reduction, security, and federal facility specialty construction and environmental services. The company is headquartered in Oak Ridge, TN. | Director/Board Member | - | - |
| President | - | - |
Career history of Mark Duff
Former positions of Mark Duff
| Companies | Position | Start | End |
|---|---|---|---|
Leidos, Inc.
 Leidos, Inc. Information Technology ServicesTechnology Services Leidos, Inc. provides scientific, engineering, systems integration and technical services and solutions. It offers solutions and services that leverage the power of data analytics, systems integration, and cyber security across national security, health, and engineering markets. The company was founded by John Robert Beyster in June 1969 and is headquartered in Reston, VA. | Corporate Officer/Principal | - | - |
| HOMELAND SECURITY CAPITAL CORP. | President | 2009-11-18 | - |
Safety & Ecology Corp.
 Safety & Ecology Corp. Miscellaneous Commercial ServicesCommercial Services Safety & Ecology Corp. provides environmental engineering and contract services. It offers construction, remediation and demolition, environmental services and environmental technology. The company was founded by Christopher P. Leichtweis in 1991 and is headquartered in Knoxville, TN. | President | - | - |
Training of Mark Duff
| The University of Alabama | Undergraduate Degree |
| University of Phoenix | Masters Business Admin |
Statistics
International
| United States | 8 |
Operational
| President | 4 |
| Corporate Officer/Principal | 2 |
| Director/Board Member | 2 |
Sectoral
| Consumer Services | 3 |
| Commercial Services | 3 |
| Technology Services | 2 |
Positions held
Active
Inactive
Listed companies
Private companies
Linked companies
| Listed companies | 1 |
|---|---|
| PERMA-FIX ENVIRONMENTAL SERVICES, INC. | Industrial Services |
| Private companies | 4 |
|---|---|
Leidos, Inc.
Leidos, Inc. Information Technology ServicesTechnology Services Leidos, Inc. provides scientific, engineering, systems integration and technical services and solutions. It offers solutions and services that leverage the power of data analytics, systems integration, and cyber security across national security, health, and engineering markets. The company was founded by John Robert Beyster in June 1969 and is headquartered in Reston, VA. | Technology Services |
Timios National Corp.
 Timios National Corp. Real Estate DevelopmentFinance Timios National Corp. engages in the acquisition, development and consolidation of real estate services related businesses. It focuses on creating long-term value by taking controlling interest and developing its subsidiary companies through operations and management. The company was founded on August 12, 1997 and is headquartered in Arlington, VA. | Finance |
Safety & Ecology Corp.
Safety & Ecology Corp. Miscellaneous Commercial ServicesCommercial Services Safety & Ecology Corp. provides environmental engineering and contract services. It offers construction, remediation and demolition, environmental services and environmental technology. The company was founded by Christopher P. Leichtweis in 1991 and is headquartered in Knoxville, TN. | Commercial Services |
Safety & Ecology Holdings Corp.
Safety & Ecology Holdings Corp. Miscellaneous Commercial ServicesCommercial Services Safety & Ecology Holdings Corp. provides environmental, infrastructure and nuclear energy services. It offers construction, remediation, and demolition services, such as facility deactivation, decontamination, site closure, threat reduction, security, and federal facility specialty construction and environmental services. The company is headquartered in Oak Ridge, TN. | Commercial Services |
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