| 2024 | The William Ellis Robinson Foundation | 990PF | President | 8 | $0 | $0 | View return |
| 2024 | Union Club of the City of New York Inc | 990 | Treasurer | 3 | $0 | $0 | View return |
| 2024 | New England Historic Genealogical Society Inc. | 990 | Vice Chairman | 6 | $0 | $0 | View return |
| 2023 | The Society of Colonial Wars | 990 | Council Member | 5 | $0 | $0 | View return |
| 2023 | Union Club of the City of New York Inc | 990 | Governor | 3 | $0 | $0 | View return |
| 2023 | New England Historic Genealogical Society Inc. | 990 | Vice Chairman | 6 | $0 | $0 | View return |
| 2022 | The Society of Colonial Wars | 990 | Council Member | 5 | $0 | $0 | View return |
| 2022 | The William Ellis Robinson Foundation | 990PF | President | 8 | $0 | $0 | View return |
| 2022 | Rockaway Hunting Club Inc | 990 | Governor | 3 | $0 | $0 | View return |
| 2022 | Union Club of the City of New York Inc | 990 | Governor | 3 | $0 | $0 | View return |
| 2022 | New England Historic Genealogical Society Inc. | 990 | Trustee | 6 | $0 | $0 | View return |
| 2021 | The William Ellis Robinson Foundation | 990PF | President | 8 | $0 | $0 | View return |
| 2021 | Rockaway Hunting Club Inc | 990 | Governor | 3 | $0 | $0 | View return |
| 2021 | Union Club of the City of New York Inc | 990 | Governor | 3 | $0 | $0 | View return |
| 2021 | New England Historic Genealogical Society Inc. | 990 | Trustee | 6 | $0 | $0 | View return |
| 2020 | 101 East 69Th Street Conservancy | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | 101 East 69Th Street Conservancy | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | New England Historic Genealogical Society Inc. | 990 | Trustee | 6 | $0 | $0 | View return |
| 2018 | 101 East 69Th Street Conservancy | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | California Jazz Conservatory Inc. | 990 | Director | 0.3 | $0 | $0 | View return |
| 2018 | New England Historic Genealogical Society Inc. | 990 | Trustee | 6 | $0 | $0 | View return |
| 2017 | California Jazz Conservatory Inc. | 990 | Director | 0.3 | $0 | $0 | View return |
| 2017 | New England Historic Genealogical Society Inc. | 990 | Trustee | 6 | $0 | $0 | View return |
| 2016 | California Jazz Conservatory Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | New England Historic Genealogical Society Inc. | 990 | Trustee | 1.5 | $0 | $0 | View return |
| 2015 | California Jazz Conservatory Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | The William Ellis Robinson Foundation | 990PF | President | 1 | $0 | $0 | View return |
| 2014 | California Jazz Conservatory Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | The William Ellis Robinson Foundation | 990PF | President | 1 | $0 | - | View return |
| 2013 | Society of Mayflower Descendants in the State of New York | 990 | Assistant | 0.3 | $0 | $0 | View return |
| 2013 | The William Ellis Robinson Foundation | 990PF | President | 1 | $0 | - | View return |
| 2012 | The William Ellis Robinson Foundation | 990PF | President | 1 | $0 | - | View return |
| 2011 | The William Ellis Robinson Foundation | 990PF | President | 1 | $0 | - | View return |
| 2010 | The William Ellis Robinson Foundation | 990PF | President | 0 | $15,000 | - | View return |