| 2025 | Jewish Jewels Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Jewish Jewels Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Kestrel Land Trust Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Putney School Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Kestrel Land Trust Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Jewish Jewels Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Kestrel Land Trust Inc. | 990EZ | Director | 1 | $0 | $0 | View return |
| 2023 | Putney School Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Kestrel Land Trust Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Jewish Jewels Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Kestrel Land Trust Inc. | 990EZ | Director | 1 | $0 | $0 | View return |
| 2022 | Putney School Inc. | 990 | Trustee (Joined 7/22) | 1 | $0 | $0 | View return |
| 2022 | Institute for Sustainable Communities | 990 | Chair Until 10/22 | 2 | $0 | $0 | View return |
| 2021 | Kestrel Land Trust Inc. | 990EZ | Director | 2 | $0 | $0 | View return |
| 2021 | Jewish Jewels Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Lloyd Center for the Environment Inc. | 990 | Director (Thru 6/2021) | 1 | $0 | $0 | View return |
| 2021 | Climate Action Systems Inc. | 990 | Director | 8 | $0 | $0 | View return |
| 2021 | Kestrel Land Trust Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Institute for Sustainable Communities | 990 | Chair | 2 | $0 | $0 | View return |
| 2020 | Jewish Jewels Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Lloyd Center for the Environment Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Institute for Sustainable Communities | 990 | Chair | 2 | $0 | $0 | View return |
| 2019 | Hampshire College Trustees | 990 | Former President (Until 6/19) | 0 | $151,503 | $0 | View return |
| 2019 | Lloyd Center for the Environment Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Kestrel Land Trust Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Institute for Sustainable Communities | 990 | Chair | 2 | $0 | $0 | View return |
| 2018 | Hampshire College Trustees | 990 | Former President | 35 | $362,591 | $0 | View return |
| 2018 | International Living Future Institute | 990 | Director (Term Ended Apr 2018) | 1 | $0 | $0 | View return |
| 2018 | Institute for Sustainable Communities | 990 | Chair | 2 | $0 | $0 | View return |
| 2018 | World Resources Institute | 990 | Director - End 3/2019 | 1 | $0 | $0 | View return |
| 2017 | Hampshire College Trustees | 990 | President | 35 | $310,005 | $0 | View return |
| 2017 | Hampshire College Trustees | 990 | President | 35 | $310,005 | $0 | View return |
| 2017 | International Living Future Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Association of Independent Colleges and Universities of Massachusetts Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Five Colleges Incorporated | 990 | President | 2 | $0 | $0 | View return |
| 2017 | Institute for Sustainable Communities | 990 | Chair | 2 | $0 | $0 | View return |
| 2017 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Hampshire College Trustees | 990 | President/Trustee | 35 | $323,053 | $0 | View return |
| 2016 | International Living Future Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Association of Independent Colleges and Universities of Massachusetts Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Institute for Sustainable Communities | 990 | Chair | 2 | $0 | $0 | View return |
| 2016 | Five Colleges Incorporated | 990 | President | 2 | $0 | $0 | View return |
| 2016 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Hampshire College Trustees | 990 | President/Trustee | 35 | $344,153 | $0 | View return |
| 2015 | Institute for Sustainable Communities | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2015 | Five Colleges Incorporated | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | World Resources Institute Fund | 990EZ | President, Director | 0 | $0 | $0 | View return |
| 2015 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Hampshire College Trustees | 990 | President/ Trustee | 35 | $357,688 | $0 | View return |
| 2014 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | World Resources Institute Fund | 990EZ | President, Director | 0 | $0 | $0 | View return |
| 2014 | Five Colleges Incorporated | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Institute for Sustainable Communities | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2013 | Hampshire College Trustees | 990 | President/ Trustee | 35 | $333,815 | $0 | View return |
| 2013 | Institute for Sustainable Communities | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2013 | Five Colleges Incorporated | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |