| 2025 | The Council on Strategic Risks | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Keystone Center | 990 | Trustee Emeritus | 1 | $0 | $0 | View return |
| 2024 | The Council on Strategic Risks | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Woodwell Climate Research Center Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | World Environment Center Inc. | 990 | Former President & CEO | 40 | $198,067 | $0 | View return |
| 2023 | Gulf of Maine Research Institute | 990 | President/CEO | 40 | $190,186 | $0 | View return |
| 2023 | Gulf of Maine Properties Inc. | 990 | President | 5 | $0 | $190,186 | View return |
| 2023 | The Council on Strategic Risks | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Keystone Center | 990 | Trustee Emeritus | 1 | $0 | $0 | View return |
| 2023 | Woodwell Climate Research Center Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | World Environment Center Inc. | 990 | President & CEO | 40 | $287,194 | $0 | View return |
| 2022 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | The Council on Strategic Risks | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Woodwell Climate Research Center Inc | 990 | Director | 3 | $0 | $0 | View return |
| 2021 | World Environment Center Inc. | 990 | President & CEO | 40 | $287,194 | $0 | View return |
| 2021 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Selby Bay Yacht Club Property Corp | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Woodwell Climate Research Center Inc | 990 | Director | 3 | $0 | $0 | View return |
| 2021 | Woodwell Climate Research Center Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | World Environment Center Inc. | 990 | President & CEO | 40 | $215,733 | $0 | View return |
| 2020 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Woodwell Climate Research Center Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | The Nature Conservancy | 990 | Chief Ext Affairs Officer (Thru 3/20) | 35 | $370,943 | $0 | View return |
| 2019 | World Environment Center Inc. | 990 | President & CEO (Beg. 06/19) | 40 | $122,500 | $0 | View return |
| 2019 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The Nature Conservancy | 990 | Chief External Affairs Officer (Part Year) | 35 | $393,304 | $0 | View return |
| 2018 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Woodwell Climate Research Center Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | The Nature Conservancy | 990 | Chief External Affairs Officer | 0 | $371,958 | $0 | View return |
| 2017 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | The Nature Conservancy | 990 | Chief External Affairs Officer | 35 | $357,243 | $0 | View return |
| 2016 | Keystone Center | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | The Nature Conservancy | 990 | Chief External Affairs Officer | 35 | $336,171 | $0 | View return |
| 2015 | Keystone Center | 990 | Co-Chair | 2 | $0 | $0 | View return |
| 2014 | The Nature Conservancy | 990 | Chief External Affairs Officer | 35 | $332,476 | $0 | View return |
| 2014 | Keystone Center Foundation | 990EZ | Trustee | 1 | $0 | - | View return |
| 2014 | Keystone Center | 990 | Co-Chair | 2 | $0 | $0 | View return |
| 2014 | Northern Virginia Conservation Trust | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | The Nature Conservancy | 990 | Chief External Affairs Officer | 35 | $320,892 | $0 | View return |
| 2013 | Keystone Center Foundation | 990EZ | Trustee | 2 | $0 | $0 | View return |
| 2013 | Keystone Center | 990 | Co-Chair | 2 | $0 | $0 | View return |
| 2013 | Northern Virginia Conservation Trust | 990 | Director | 1 | $0 | $0 | View return |