| 2025 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2024 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2024 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2024 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2024 | The National Museum of Women in the Arts Inc | 990 | Member | 1 | $0 | $0 | View return |
| 2023 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2023 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2023 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2023 | Wilderness Society Action Fund | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2022 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2022 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2022 | Wilderness Society Action Fund | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2021 | Mars Hq Regional Foundation | 990PF | President | 1 | $0 | $0 | View return |
| 2021 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2021 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2021 | Wilderness Society Action Fund | 990 | Director (From Jun '22) | 1 | $0 | $0 | View return |
| 2021 | Wilderness Society Action Fund | 990 | Director (From Jun '22) | 1 | $0 | $0 | View return |
| 2020 | Mars Hq Regional Foundation | 990PF | President | 1 | $0 | $0 | View return |
| 2020 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2020 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2020 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2019 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2019 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2019 | National Horse Sports Foundation | 990EZ | Trustee | 0 | $0 | - | View return |
| 2019 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2018 | National Horse Sports Foundation | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2018 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2018 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2018 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2017 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2017 | National Horse Sports Foundation | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2017 | Usea Endowment Trust | 990 | Trustee | 2 | $0 | $0 | View return |
| 2017 | National Archives Foundation | 990 | Vice President | 2 | $0 | $0 | View return |
| 2017 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2016 | National Horse Sports Foundation | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2016 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2016 | United States Equestrian Team Foundation Inc. | 990 | Trustee (Thru 1/2016) | 1 | $0 | $0 | View return |
| 2016 | National Archives Foundation | 990 | Board Member | 1.5 | $0 | $0 | View return |
| 2016 | Usea Endowment Trust | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2015 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2015 | United States Equestrian Team Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | National Horse Sports Foundation | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2015 | Usea Endowment Trust | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | National Horse Sports Foundation | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2014 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2014 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President | 2 | $0 | $0 | View return |
| 2013 | The National Sporting Library and Museum | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2013 | Orange County Hounds Inc (Formerly Orange County Hunt Club Inc) | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2013 | Usea Endowment Trust | 990 | Trustee | 2 | $0 | $0 | View return |