| 2024 | International Sea Level Institute | 990 | Director | 10 | $0 | $0 | View return |
| 2024 | Friends of Iiasa | 990 | Member, Board Of Directors | 0.5 | $0 | $0 | View return |
| 2024 | Global Environment & Technology Foundation | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | Science Diplomacy Center Inc. | 990EZ | Director | 2 | $0 | $0 | View return |
| 2023 | Global Environment & Technology Foundation | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | Friends of Iiasa | 990 | Member, Board Of Directors | 0.5 | $0 | $0 | View return |
| 2023 | International Sea Level Institute | 990 | Director | 10 | $0 | $0 | View return |
| 2022 | International Sea Level Institute | 990 | Director | 10 | $10,000 | $0 | View return |
| 2022 | Friends of Iiasa | 990 | Member, Board Of Directors | 0.5 | $0 | $0 | View return |
| 2021 | Global Environment & Technology Foundation | 990 | Director | 0.5 | $0 | $0 | View return |
| 2021 | Climate Institute | 990EZ | Board Member | 2.5 | $0 | $0 | View return |
| 2021 | Bermuda Institute of Ocean Sciences (Bios) Inc | 990 | Trustee, Until 10/2021 | 1 | $0 | $0 | View return |
| 2021 | Climate Adaptation Center Inc. | 990EZ | Director | 2 | $0 | $0 | View return |
| 2021 | International Sea Level Institute | 990EZ | Director | 10 | $0 | $0 | View return |
| 2021 | Friends of Iiasa | 990 | Member, Board Of Directors | 0.5 | $0 | $0 | View return |
| 2020 | International Sea Level Institute | 990EZ | Director | 10 | $0 | $0 | View return |
| 2020 | Global Environment & Technology Foundation | 990 | Director | 0.5 | $0 | $0 | View return |
| 2020 | Friends of Iiasa | 990 | Member, Board Of Trustees | 1 | $0 | $0 | View return |
| 2020 | Bermuda Institute of Ocean Sciences (Bios) Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Climate Institute | 990EZ | Board Member | 2.5 | $0 | $0 | View return |
| 2019 | Climate Institute | 990 | Board Member | 2.5 | $0 | $0 | View return |
| 2019 | Bermuda Institute of Ocean Sciences (Bios) Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Friends of Iiasa | 990 | Member, Board Of Trustees | 1 | $0 | $0 | View return |
| 2018 | Climate Institute | 990EZ | Board Member | 2.5 | $0 | $0 | View return |
| 2018 | Bermuda Institute of Ocean Sciences (Bios) Inc | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2018 | Friends of Iiasa | 990 | Member, Board Of Trustees | 1 | $0 | $0 | View return |
| 2017 | Friends of Iiasa | 990 | Member, Board Of Trustees | 2 | $0 | $0 | View return |
| 2017 | Climate Institute | 990EZ | Board Member | 2.5 | $0 | $0 | View return |
| 2016 | Friends of Iiasa | 990 | Member, Board Of Trustees | 1 | $0 | $0 | View return |
| 2015 | Friends of Iiasa | 990 | Member, Board Of Trustees | 0.5 | $0 | $0 | View return |
| 2014 | Friends of Iiasa | 990EZ | Member, Board Of Trustees | 1 | $0 | $0 | View return |