| 2025 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2024 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2024 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2024 | The Peregrine Fund Inc | 990 | Chair Emeritus | 1 | $0 | $0 | View return |
| 2023 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2023 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Archives of Falconry Inc. | 990 | President | 1 | $0 | $0 | View return |
| 2023 | The Peregrine Fund Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2022 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2022 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | The Peregrine Fund Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2022 | Archives of Falconry Inc. | 990 | President | 1 | $0 | $0 | View return |
| 2021 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2021 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2021 | The Peregrine Fund Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2021 | Archives of Falconry Inc. | 990 | President | 1 | $0 | $0 | View return |
| 2020 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2020 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2020 | The Peregrine Fund Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2020 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2020 | Archives of Falconry Inc. | 990 | President | 1 | $0 | $0 | View return |
| 2019 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2019 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2019 | The Peregrine Fund Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | Archives of Falconry Inc. | 990 | President | 1 | $0 | $0 | View return |
| 2018 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2018 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2018 | Archives of Falconry Inc. | 990 | President | 10 | $0 | $0 | View return |
| 2018 | The Peregrine Fund Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2017 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2017 | Southwestern Medical Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2017 | Archives of Falconry Inc. | 990 | President | 1 | $0 | $0 | View return |
| 2017 | The Peregrine Fund Inc | 990 | Vice-Chairman | 1 | $0 | $0 | View return |
| 2016 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | 0 | $0 | $0 | View return |
| 2016 | The Peregrine Fund Inc | 990 | Vice-Chairman | 1 | $0 | $0 | View return |
| 2016 | Archives of Falconry Inc. | 990EZ | President | 1 | $0 | $0 | View return |
| 2015 | Isem Inc(Formerly Isem Foundation) | 990 | Trustee | - | $0 | $0 | View return |
| 2015 | Institute for the Study of Earth and Man | 990 | Trustee | - | $0 | $0 | View return |
| 2015 | The Peregrine Fund Inc | 990 | Vice-Chairman | 1 | $0 | $0 | View return |
| 2014 | Institute for the Study of Earth and Man | 990 | Trustee | - | $0 | $0 | View return |
| 2014 | The Peregrine Fund Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Institute for the Study of Earth and Man | 990 | Trustee | - | $0 | $0 | View return |
| 2013 | The Peregrine Fund Inc | 990 | Director | 1 | $0 | $0 | View return |