| 2025 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2025 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 0.05 | $0 | $0 | View return |
| 2025 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 0.02 | $0 | $0 | View return |
| 2024 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 0.05 | $0 | $0 | View return |
| 2024 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2024 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 0.02 | $0 | $0 | View return |
| 2023 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 0.02 | $0 | $0 | View return |
| 2023 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2023 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 0.05 | $0 | $0 | View return |
| 2022 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 0.2 | $0 | $0 | View return |
| 2022 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2022 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 0.2 | $0 | $0 | View return |
| 2021 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 1 | $0 | $0 | View return |
| 2021 | Bird Island Trust Inc | 990PF | Vice President & Secretary | 2 | $0 | $0 | View return |
| 2021 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2021 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2021 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2020 | Bird Island Trust Inc | 990PF | Vice President & Secretary | 2 | $0 | $0 | View return |
| 2020 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2020 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2020 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2020 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 1 | $0 | $0 | View return |
| 2019 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2019 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2019 | The Hardscrabble Foundation | 990PF | Secretary & Vice President | 0 | $0 | $0 | View return |
| 2019 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 1 | $0 | $0 | View return |
| 2018 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2018 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 1 | $0 | $0 | View return |
| 2018 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2018 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 1 | $0 | $0 | View return |
| 2017 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2017 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 2 | $0 | $0 | View return |
| 2017 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 2 | $0 | $0 | View return |
| 2017 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 2 | $0 | $0 | View return |
| 2017 | The Bill and Ann Ziff Foundation | 990PF | Vice President/Treasurer | 2 | $0 | $0 | View return |
| 2016 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 2 | $0 | $0 | View return |
| 2016 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 2 | $0 | $0 | View return |
| 2016 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | Vice President & Treasurer | 2 | $0 | $0 | View return |
| 2016 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2016 | The Bill and Ann Ziff Foundation | 990PF | Vice President/Treasurer | 2 | $0 | $0 | View return |
| 2015 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2015 | The Leslie and Daniel Ziff Foundation | 990PF | Vice President & Treasurer | 2 | $0 | $0 | View return |
| 2015 | The Robert D Ziff Foundation | 990PF | VP & Treasurer | 2 | $0 | $0 | View return |
| 2015 | The Natasha & Dirk Ziff Foundation F/K/A the Dirk E Ziff Foundation | 990PF | VP & Treasurer | 2 | $0 | $0 | View return |
| 2014 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2013 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2012 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |
| 2011 | The Hardscrabble Foundation | 990PF | Vice President | 0 | $0 | $0 | View return |