| 2025 | Patrick Cantlay Foundation | 990 | Director | 2 | $0 | $0 | View return |
| 2024 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 3 | $0 | $0 | View return |
| 2024 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 2 | $0 | $0 | View return |
| 2024 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee (Non-Voting) | 2 | $0 | $0 | View return |
| 2024 | Harlem Children'S Zone Inc | 990 | Chairman Emeritus | 1 | $0 | $0 | View return |
| 2024 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee (Non-Voting) | 2 | $0 | $0 | View return |
| 2024 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | Kasparov Chess Foundation Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Druckenmiller Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2023 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | Harlem Children'S Zone Inc | 990 | Chairman Emeritus (Non-Voting) | 1 | $0 | $0 | View return |
| 2023 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | Kasparov Chess Foundation Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 3 | $0 | $0 | View return |
| 2022 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | Harlem Children'S Zone Inc | 990 | Chairman Emeritus | 1 | $0 | $0 | View return |
| 2022 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Druckenmiller Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Kasparov Chess Foundation Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 3 | $0 | $0 | View return |
| 2021 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2021 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | Center for Strategic and International Studies Inc. | 990 | Trustee (Until 1/2022) | 1 | $0 | $0 | View return |
| 2021 | Druckenmiller Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Center for Strategic and International Studies Inc. | 990 | Trustee (Until 1/2022) | 1 | $0 | $0 | View return |
| 2020 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | Kasparov Chess Foundation Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 10 | $0 | $0 | View return |
| 2020 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | Center for Strategic and International Studies Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Druckenmiller Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2020 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | Kasparov Chess Foundation Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Center for Strategic and International Studies Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | Druckenmiller Foundation | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2018 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 10 | $0 | $0 | View return |
| 2018 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | Kasparov Chess Foundation Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2018 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2018 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2018 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2018 | Center for Strategic and International Studies Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2017 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 10 | $0 | $0 | View return |
| 2017 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 8 | $0 | $0 | View return |
| 2017 | Harlem Children'S Zone Promise Academy Charter School | 990 | Trustee | 2 | $0 | $0 | View return |
| 2017 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Trustee | 2 | $0 | $0 | View return |
| 2017 | Center for Strategic and International Studies Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2017 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 3 | $0 | $0 | View return |
| 2016 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Harlem Children'S Zone Promise Academy Charter School | 990 | Board Member | 2 | $0 | $0 | View return |
| 2016 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Center for Strategic and International Studies Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Board Member | 2 | $0 | $0 | View return |
| 2016 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2015 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Seminole Golf Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 3 | $0 | $0 | View return |
| 2015 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | Harlem Children'S Zone Promise Academy Charter School | 990 | Board Member | 2 | $0 | $0 | View return |
| 2015 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Board Member | 2 | $0 | $0 | View return |
| 2015 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2015 | Center for Strategic and International Studies Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 1 | $0 | $0 | View return |
| 2014 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Board Member | 2 | $0 | $0 | View return |
| 2014 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2014 | Harlem Children'S Zone Promise Academy Charter School | 990 | Board Member | 2 | $0 | $0 | View return |
| 2013 | Memorial Sloan-Kettering Cancer Center | 990 | See Schedule O | 1 | $0 | $0 | View return |
| 2013 | Memorial Sloan-Kettering Cancer Center | 990 | Board Member | 1 | - | - | View return |
| 2013 | Kasparov Chess Foundation Inc. | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2013 | Harlem Children'S Zone Promise Academy Charter School II | 990 | Board Member | 2 | - | - | View return |
| 2013 | Harlem Children'S Zone Inc | 990 | Chairman | 1 | - | - | View return |
| 2013 | Environmental Defense Fund Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2013 | Harlem Children'S Zone Promise Academy Charter School | 990 | Board Member | 2 | - | - | View return |
| 2012 | Kasparov Chess Foundation Inc. | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2011 | Kasparov Chess Foundation Inc. | 990PF | Trustee | 2 | $0 | $0 | View return |