| 2024 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Otsego 2000 Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2024 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2023 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2023 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2023 | Waterfront Alliance Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Otsego 2000 Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Seven West Forty Third Street Foundation | 990 | Secretary | 3 | $0 | $0 | View return |
| 2023 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2022 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2022 | Waterfront Alliance Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Seven West Forty Third Street Foundation | 990 | Secretary | 3 | $0 | $0 | View return |
| 2022 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2022 | Otsego 2000 Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Waterfront Alliance Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2021 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2021 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2021 | Waterfront Alliance Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2021 | Otsego 2000 Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Seven West Forty Third Street Foundation | 990 | Secretary | 3 | $0 | $0 | View return |
| 2021 | Otsego Land Trust | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2020 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2020 | Waterfront Alliance Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Seven West Forty Third Street Foundation | 990 | Secretary | 3 | $0 | $0 | View return |
| 2019 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2019 | Seven West Forty Third Street Foundation | 990 | Secretary | 3 | $0 | $0 | View return |
| 2019 | Otsego 2000 Inc | 990 | Director | 0.25 | $0 | $0 | View return |
| 2019 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2019 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2019 | Otsego Land Trust | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | Erie Canalway Heritage Fund Inc | 990 | Member | 1 | $0 | $0 | View return |
| 2018 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2018 | Otsego 2000 Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Seven West Forty Third Street Foundation | 990 | Secretary | 3 | $0 | $0 | View return |
| 2018 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2018 | National Institute of Social Sciences | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2018 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2018 | Erie Canalway Heritage Fund Inc | 990 | Member | 1 | $0 | $0 | View return |
| 2018 | Otsego Land Trust | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | New York Landmarks Preservation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | National Institute of Social Sciences | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2017 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2017 | Waterfront Alliance Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2017 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2017 | Otsego Land Trust | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Erie Canalway Heritage Fund Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2016 | Waterfront Alliance Inc | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2016 | Otsego Land Trust | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | St Bartholomew'S Conservancy Inc | 990 | Director Thru 9/21/16 | 1 | $0 | $0 | View return |
| 2016 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2016 | St Bartholomew'S Conservancy Inc | 990 | Director Thru 9/21/16 | 1 | $0 | $0 | View return |
| 2016 | National Institute of Social Sciences | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2016 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2016 | Erie Canalway Heritage Fund Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | New York Landmarks Preservation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Otsego Land Trust | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2015 | National Institute of Social Sciences | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2015 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2015 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2015 | Seventh Regiment Armory Conservancy Inc | 990 | Director (To 10/2015) | 1 | $0 | $0 | View return |
| 2015 | Waterfront Alliance Inc | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2015 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | St Bartholomew'S Conservancy Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | New York Landmarks Preservation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Erie Canalway Heritage Fund Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | National Institute of Social Sciences | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2014 | Waterfront Alliance Inc | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2014 | Otsego Land Trust | 990 | Director | 0.25 | $0 | $0 | View return |
| 2014 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2014 | St Bartholomew'S Conservancy Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Ss Columbia Project | 990 | Board Member | 2 | $0 | $0 | View return |
| 2014 | Seventh Regiment Armory Conservancy Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2014 | New York Landmarks Preservation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Erie Canalway Heritage Fund Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Parks & Trails New York Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2013 | Seventh Regiment Armory Conservancy Inc | 990 | Director | 1 | $0 | - | View return |
| 2013 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2013 | St Bartholomew'S Conservancy Inc | 990 | Director | - | $0 | $0 | View return |
| 2013 | Saint Gaudens Memorial | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2013 | Otsego Land Trust | 990 | Director | 0.25 | $0 | $0 | View return |
| 2013 | Historic Hudson Valley | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | National Institute of Social Sciences | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2013 | Waterfront Alliance Inc | 990 | Vice Chair | 2 | $0 | $0 | View return |
| 2013 | Erie Canalway Heritage Fund Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2012 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2011 | The Clark Foundation | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2010 | The Clark Foundation | 990PF | Director | 0 | $0 | $0 | View return |