| 2025 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2024 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Clf Ventures Inc. | 990 | Director (Ex Officio) | 1 | $0 | $0 | View return |
| 2024 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2023 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Clf Ventures Inc. | 990 | Director Ex Officio | 1 | $0 | $0 | View return |
| 2023 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2022 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2022 | Clf Ventures Inc. | 990 | Director Ex Officio | 1 | $0 | $0 | View return |
| 2022 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2021 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2021 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2021 | Clf Ventures Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Clf Ventures Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Upper Charles Conservation Land Trust Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2020 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2020 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2019 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2019 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2018 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2018 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2017 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2017 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2016 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2016 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2015 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2015 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2014 | Dover Land Conservation Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2014 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |
| 2013 | Clf Ventures Inc. | 990 | Director | 3 | $0 | $0 | View return |
| 2013 | Conservation Law Foundation Inc. | 990 | Chair | 3 | $0 | $0 | View return |