| 2024 | Risk Analysis Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2024 | Society for Risk Analysis | 990 | Secretariat | 1 | $0 | $0 | View return |
| 2024 | Semiconductor Environmental Safety And | 990 | Executive Director (See Schedule O) | 5 | $0 | $0 | View return |
| 2023 | Society for Risk Analysis | 990 | Secretariat | 1 | $0 | $0 | View return |
| 2023 | Homeward Iowa | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Risk Analysis Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2023 | Health Physics Society | 990 | Executive Director | 2 | $0 | $0 | View return |
| 2023 | Semiconductor Environmental Safety And | 990 | Executive Director (See Sch. O) | 5 | $0 | $0 | View return |
| 2023 | Loudoun Symphony Association Inc | 990 | Treasurer | 3 | $0 | $0 | View return |
| 2023 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2023 | American Society for Photobiology | 990 | Executive Secretariat | 1 | $0 | $0 | View return |
| 2022 | Risk Analysis Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2022 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2022 | American Society for Photobiology | 990 | Executive Secretariat | 1 | $0 | $0 | View return |
| 2022 | Health Physics Society | 990 | Executive Director | 2 | $0 | $0 | View return |
| 2022 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2022 | Loudoun Symphony Association Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2022 | Semiconductor Environmental Safety And | 990 | Executive Director (See Sch O) | 5 | $0 | $0 | View return |
| 2021 | Risk Analysis Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2021 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2021 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2021 | American Society for Photobiology | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2020 | Risk Analysis Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2020 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2020 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2020 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2020 | American Society for Photobiology | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2019 | Risk Analysis Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2019 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2019 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2019 | American Society for Photobiology | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2019 | American Academy of Health Physics | 990 | Executive Director | 1 | $0 | $0 | View return |
| 2019 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2018 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2018 | American Society for Photobiology | 990 | Executive Secretariat | 1 | $0 | $0 | View return |
| 2018 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2018 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2018 | Semiconductor Environmental Safety And | 990 | Executive Director | 5 | $0 | $0 | View return |
| 2017 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2017 | Bluemont Concert Series Ltd | 990 | Chairman | 5 | $0 | $0 | View return |
| 2017 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2017 | Semiconductor Environmental Safety And | 990 | Executive Direc | 5 | $0 | $0 | View return |
| 2017 | American Society for Photobiology | 990 | Executive Secretariat | 1 | $0 | $0 | View return |
| 2017 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2016 | Semiconductor Environmental Safety And | 990EZ | Executive Direc | 5 | $0 | - | View return |
| 2016 | Bluemont Concert Series Ltd | 990 | Chairman | 5 | $0 | $0 | View return |
| 2016 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2016 | Health Physics Fund | 990EZ | President Director | 0.5 | $0 | - | View return |
| 2016 | American Society for Photobiology | 990 | Executive Secretariat | 1 | $0 | $0 | View return |
| 2016 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2015 | Society for Risk Analysis | 990 | Executive Secretary | 1 | $0 | $0 | View return |
| 2015 | Semiconductor Environmental Safety And | 990EZ | Executive Direc | 5 | $0 | - | View return |
| 2015 | Bluemont Concert Series Ltd | 990 | Chairman | 5 | $0 | $0 | View return |
| 2015 | American Society for Photobiology | 990 | Executive Secretariat | 1 | $0 | $0 | View return |
| 2015 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2014 | Risk Analysis Fund | 990EZ | Director | 0 | $0 | - | View return |
| 2014 | Bluemont Concert Series Ltd | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2014 | Semiconductor Environmental Safety And | 990EZ | Executive Direc | 5 | $0 | - | View return |
| 2014 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2013 | Cares Community Health | 990 | Director-Patient Financial Services | 40 | $111,738 | $0 | View return |
| 2013 | Health Physics Society | 990 | Executive Secretary | 2 | $0 | $0 | View return |
| 2013 | Semiconductor Environmental Safety And | 990EZ | Executive Direc | 5 | $0 | - | View return |
| 2013 | Bluemont Concert Series Ltd | 990 | Director | 2 | $0 | $0 | View return |