| 2024 | Virginia Forever | 990EZ | Director | 0 | $0 | - | View return |
| 2024 | National Park Trust Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2024 | National Audubon Society Inc. | 990 | Director (As Of 03/25) | 8 | $0 | $0 | View return |
| 2023 | Virginia Forever | 990EZ | Director | 1 | $0 | - | View return |
| 2023 | Climate Conservation DBA Center for Large Landscape Conservation | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Geo Global Environmental Options Inc | 990EZ | Trustee | 0 | $0 | - | View return |
| 2023 | Ducks Unlimited Inc. | 990 | At-Large Member Of The Board Of Directors | 5 | $0 | $0 | View return |
| 2023 | Ducks Unlimited Inc Group Return | 990 | At-Large Member Of The Board Of Directors | 1 | $0 | $0 | View return |
| 2023 | Chesapeake Bay Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Climate Conservation DBA Center for Large Landscape Conservation | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Virginia Forever | 990EZ | Director | 1 | $0 | - | View return |
| 2022 | The Student Conservation Association Inc | 990 | Chairperson | 1 | $0 | $0 | View return |
| 2022 | Ducks Unlimited Inc Group Return | 990 | At-Large Member Of The Board Of Directors | 1 | $0 | $0 | View return |
| 2022 | Geo Global Environmental Options Inc | 990EZ | Trustee | 0 | $0 | - | View return |
| 2022 | Chesapeake Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Chesapeake Bay Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Ducks Unlimited Inc. | 990 | At-Large Member Of The Board Of Directors | 5 | $0 | $0 | View return |
| 2021 | Chesapeake Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Student Conservation Association Inc | 990 | Chairperson | 1 | $0 | $0 | View return |
| 2021 | Virginia Forever | 990EZ | Director | 1 | $0 | - | View return |
| 2021 | Climate Conservation DBA Center for Large Landscape Conservation | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Ducks Unlimited Inc. | 990 | At-Large Member Of The Board Of Directors | 5 | $0 | $0 | View return |
| 2021 | Ducks Unlimited Inc Group Return | 990 | At-Large Member Of The Board Of Directors | 1 | $0 | $0 | View return |
| 2021 | Chesapeake Bay Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Geo Global Environmental Options Inc | 990 | Trustee | 0 | $0 | $0 | View return |
| 2020 | Virginia Forever | 990EZ | Director | 1 | $0 | - | View return |
| 2020 | Climate Conservation DBA Center for Large Landscape Conservation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Chesapeake Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | The Student Conservation Association Inc | 990 | Chairperson | 1 | $0 | $0 | View return |
| 2020 | Chesapeake Bay Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Ducks Unlimited Inc Group Return | 990 | At-Large Member Of The Board Of Directors | 1 | $0 | $0 | View return |
| 2020 | Geo Global Environmental Options Inc | 990EZ | Trustee | 0 | $0 | - | View return |
| 2020 | Ducks Unlimited Inc. | 990 | At-Large Member Of The Board Of Directors | 5 | $0 | $0 | View return |
| 2019 | Northland College | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2019 | Chesapeake Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | The Student Conservation Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Chesapeake Bay Foundation Inc. | 990 | Trustee (Beginning 01/20) | 1 | $0 | $0 | View return |
| 2019 | Geo Global Environmental Options Inc | 990EZ | Trustee | 0 | $0 | - | View return |
| 2018 | Chesapeake Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | The Student Conservation Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Defenders of Wildlife | 990 | Director | 0.5 | $0 | $0 | View return |
| 2017 | The Potomac Conservancy Inc | 990 | Secretary (From 12/2017) | 10 | $0 | $0 | View return |
| 2017 | The Student Conservation Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Defenders of Wildlife | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | The Student Conservation Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | The Potomac Conservancy Inc | 990 | Secretary (Beg. 12/2016) | 10 | $0 | $0 | View return |
| 2016 | National Wildlife Refuge Association | 990 | Board Member | 4 | $0 | $0 | View return |
| 2016 | Defenders of Wildlife | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | The Student Conservation Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Defenders of Wildlife | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | National Wildlife Refuge Association | 990 | Board Member | 4 | $0 | $0 | View return |
| 2015 | Defenders of Wildlife | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | The Potomac Conservancy Inc | 990 | Director | 5 | $0 | $0 | View return |
| 2014 | Reston Chapter of the Links Inc | 990EZ | Vice President Of Membersh | 5 | $0 | $0 | View return |
| 2014 | National Wildlife Refuge Association | 990 | Board Member | 4 | $0 | $0 | View return |
| 2014 | Defenders of Wildlife | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | National Wildlife Refuge Association | 990 | Board Member | 4 | $0 | $0 | View return |