| 2023 | New York Road Runners Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Congress for the New Urbanism Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | City Parks Alliance Inc. | 990 | Co-Chairperson | 2 | $0 | $0 | View return |
| 2022 | Congress for the New Urbanism Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | New York Road Runners Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | City Parks Alliance Inc. | 990 | Co-Chairperson | 2 | $0 | $0 | View return |
| 2022 | American Planning Association | 990 | Board Director (Until 12/22) | 2 | $0 | $0 | View return |
| 2021 | Natural Areas Conservancy Inc. | 990 | Ex-Officio | 1 | $0 | $0 | View return |
| 2021 | City Parks Foundation Inc. | 990 | Director (Thru June 2021) | 2 | $0 | $0 | View return |
| 2021 | Socrates Sculpture Park Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Battery Conservancy Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Congress for the New Urbanism Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | City Parks Alliance Inc. | 990 | Co-Chairperson | 2 | $0 | $0 | View return |
| 2021 | New York City Tourism and Conventions Inc | 990 | Board Member, Thru 2/17/22 | 1 | $0 | $0 | View return |
| 2021 | Gracie Mansion Conservancy | 990 | Secretary | 1 | $0 | $0 | View return |
| 2021 | New York Road Runners Inc. | 990 | Board Member, As Of July 1, 2021 | 1 | $0 | $0 | View return |
| 2021 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee To 7/21 | 1 | $0 | $0 | View return |
| 2021 | Hudson Yards Development Corporation | 990 | Director (Outgoing) | 1 | $0 | $0 | View return |
| 2021 | Washington Square Park Conservancy Inc. | 990 | Park Rep Nyc Parks Dept Tr | 0.25 | $0 | $0 | View return |
| 2021 | New York City Tourism and Conventions Inc | 990 | Board Member, Thru 2/17/22 | 1 | $0 | $0 | View return |
| 2020 | City Parks Foundation Inc. | 990 | Board Member | 2 | $0 | $0 | View return |
| 2020 | Battery Conservancy Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | Flushing Meadows Corona Park Improvement Fund Inc. | 990 | Commissioner Nyc Parks | 3 | $0 | $0 | View return |
| 2020 | Natural Areas Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2020 | Bryant Park Corporation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2020 | Brooklyn Bridge Park Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | New York City Tourism and Conventions Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | City Parks Alliance Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Hudson Yards Development Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2020 | Washington Square Park Conservancy Inc. | 990 | Park Rep Nyc Parks Dept Trustee | 0.25 | $0 | $0 | View return |
| 2020 | American Planning Association | 990 | Board Director | 2 | $0 | $0 | View return |
| 2019 | Natural Areas Conservancy Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Hudson Yards Development Corporation | 990 | Director | 0 | $0 | $0 | View return |
| 2019 | Flushing Meadows Corona Park Improvement Fund Inc. | 990 | Commissioner Nyc Parks | 3 | $0 | $0 | View return |
| 2019 | Battery Conservancy Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | City Parks Foundation Inc. | 990 | Board Member | 2 | $0 | $0 | View return |
| 2019 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee | 1 | $0 | $0 | View return |
| 2019 | Brooklyn Bridge Park Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | American Planning Association | 990 | Board Director | 2 | $0 | $0 | View return |
| 2019 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2019 | Bryant Park Corporation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2019 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2018 | City Parks Foundation Inc. | 990 | Board Member | 2 | $0 | $0 | View return |
| 2018 | Flushing Meadows Corona Park Improvement Fund Inc. | 990 | Commissioner Nyc Parks | 3 | $0 | $0 | View return |
| 2018 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee | 1 | $0 | $0 | View return |
| 2018 | Brooklyn Bridge Park Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2018 | Bryant Park Corporation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2018 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2018 | Horticultural Society of New York Inc. | 990 | Ex Officio | 2 | $0 | $0 | View return |
| 2017 | Randall'S Island Park Alliance Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2017 | City Parks Foundation Inc. | 990 | Ex-Offico Director | 2 | $0 | $0 | View return |
| 2017 | Socrates Sculpture Park Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2017 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee | 1 | $0 | $0 | View return |
| 2017 | Flushing Meadows Corona Park Improvement Fund Inc. | 990 | President | 3 | $0 | $0 | View return |
| 2017 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2017 | Horticultural Society of New York Inc. | 990 | Ex Officio | 2 | $0 | $0 | View return |
| 2017 | Brooklyn Bridge Park Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2016 | Randall'S Island Park Alliance Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | Socrates Sculpture Park Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2016 | Bryant Park Corporation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2016 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2016 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee | 1 | $0 | $0 | View return |
| 2016 | Brooklyn Bridge Park Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Horticultural Society of New York Inc. | 990 | Ex Officio | 2 | $0 | $0 | View return |
| 2015 | Flushing Meadows Corona Park Improvement Fund Inc. | 990 | President | 3 | $0 | $0 | View return |
| 2015 | Randall'S Island Park Alliance Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | Socrates Sculpture Park Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2015 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2015 | Horticultural Society of New York Inc. | 990 | Ex Officio | 2 | $0 | $0 | View return |
| 2015 | Brooklyn Bridge Park Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee | 1 | $0 | $0 | View return |
| 2014 | Socrates Sculpture Park Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Flushing Meadows Corona Park Improvement Fund Inc. | 990 | President | 3 | $0 | $0 | View return |
| 2014 | Brooklyn Bridge Park Corporation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Animal Care and Control of New York City Inc. | 990 | Director (Since 5/2014) | 1 | $0 | $0 | View return |
| 2014 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee | 1 | $0 | $0 | View return |
| 2014 | Wildlife Conservation Society | 990 | Ex Officio Trustee | 0.5 | $0 | $0 | View return |
| 2014 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2014 | New York Restoration Project | 990 | Trustee, Ex-Officio | 1.2 | $0 | $0 | View return |
| 2014 | Bryant Park Corporation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2014 | New York Restoration Project | 990 | Trustee, Ex-Officio | 1.2 | $0 | $0 | View return |
| 2013 | Washington Square Park Conservancy Inc. | 990 | Parks Repres | 0 | $0 | $0 | View return |
| 2013 | Animal Care and Control of New York City Inc. | 990 | Director (Since 5/2014) | 1 | $0 | $0 | View return |
| 2013 | Brooklyn Bridge Park Corporation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | American Planning Association | 990 | Past President | 2 | $0 | $0 | View return |
| 2013 | Wildlife Conservation Society | 990 | Ex Officio Trustee Fr. 1/1/14 | 0.5 | - | - | View return |
| 2013 | Prospect Park Alliance Inc. | 990 | Ex-Officio - Commissioner Nyc Parks & Receation | 2 | $0 | $0 | View return |
| 2013 | The Metropolitan Museum of Art | 990 | Ex-Officio Trustee From 5/2014 | 1 | - | - | View return |