| 2024 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2024 | The Trustees of Reservations | 990 | Assistant Secretary | 2 | $0 | $0 | View return |
| 2024 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2024 | Massachusetts Land Trust Coalition Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2023 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2023 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | New England Wild Flower Society Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2023 | Massachusetts Land Trust Coalition Inc | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | The Trustees of Reservations | 990 | Assistant Secretary | 2 | $0 | $0 | View return |
| 2023 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Environmental League of Massachusetts Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2022 | New England Wild Flower Society Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2022 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Environmental League of Massachusetts Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Massachusetts Land Trust Coalition Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2022 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | New England Wild Flower Society Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2021 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2021 | Environmental League of Massachusetts Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | Massachusetts Land Trust Coalition Inc | 990 | President | 4 | $0 | $0 | View return |
| 2020 | New England Wild Flower Society Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2020 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2020 | The Trustees of Reservations | 990 | Secretary (Until 9/20)/Director | 2 | $0 | $0 | View return |
| 2020 | Massachusetts Land Trust Coalition Inc | 990EZ | President | 5 | $0 | - | View return |
| 2020 | Environmental League of Massachusetts Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2019 | New England Wild Flower Society Inc | 990 | Trustee | 3 | $0 | $0 | View return |
| 2019 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | Massachusetts Land Trust Coalition Inc | 990EZ | President | 5 | $0 | - | View return |
| 2019 | The Trustees of Reservations | 990 | Secretary | 2 | $0 | $0 | View return |
| 2019 | Environmental League of Massachusetts Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2018 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2018 | Rural Land Foundation of Lincoln | 990 | President | 1 | $0 | $0 | View return |
| 2018 | Massachusetts Land Trust Coalition Inc | 990EZ | President | 5 | $0 | $0 | View return |
| 2018 | The Trustees of Reservations | 990 | Secretary | 2 | $0 | $0 | View return |
| 2018 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | Environmental League of Massachusetts Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2017 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2017 | Rural Land Foundation of Lincoln | 990 | President | 1 | $0 | $0 | View return |
| 2017 | Massachusetts Land Conservation Trust Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | The Trustees of Reservations | 990 | Secretary | 2 | $0 | $0 | View return |
| 2016 | Rural Land Foundation of Lincoln | 990 | President | 1 | $0 | $0 | View return |
| 2016 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2016 | The Trustees of Reservations | 990 | Secretary | 5 | $0 | $0 | View return |
| 2016 | Environmental League of Massachusetts Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2016 | Massachusetts Land Conservation Trust Inc. | 990 | Chairman | 2 | $0 | $0 | View return |
| 2015 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2015 | The Trustees of Reservations | 990 | Secretary | 5 | $0 | $0 | View return |
| 2015 | Massachusetts Land Conservation Trust Inc. | 990 | Chairman | 2 | $0 | $0 | View return |
| 2015 | Environmental League of Massachusetts Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2014 | Lincoln Land Conservation Trust | 990 | President | 5 | $0 | $0 | View return |
| 2014 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Environmental League of Massachusetts Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2014 | Boston Natural Areas Network Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Massachusetts Land Conservation Trust Inc. | 990 | Chairman | 2 | $0 | $0 | View return |
| 2014 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | Rural Land Foundation of Lincoln | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Environmental League of Massachusetts Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2013 | Massachusetts Land Conservation Trust Inc. | 990 | Chairman | 2 | $0 | $0 | View return |
| 2013 | The Trustees of Reservations | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | Boston Natural Areas Network Inc | 990 | Director | 1 | $0 | $0 | View return |