| 2025 | Pianofest Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2024 | The James S Marcus Foundation | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2024 | Pianofest Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2024 | Young Concert Artists Inc. | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2024 | Mastervoices Inc. | 990 | Vice-Chair | 1 | $0 | $0 | View return |
| 2024 | Wnetorg | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | The James S Marcus Foundation | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2023 | Pianofest Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2023 | Mastervoices Inc. | 990 | Vice-Chair | 1 | $0 | $0 | View return |
| 2023 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Wnetorg | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Young Concert Artists Inc. | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2023 | American Associates Ben-Gurion University of the Negev Inc | 990 | Secretary | 3 | $0 | $0 | View return |
| 2022 | Pianofest Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2022 | The James S Marcus Foundation | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | Mastervoices Inc. | 990 | Vice-Chair | 1 | $0 | $0 | View return |
| 2022 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Young Concert Artists Inc. | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2022 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 3 | $0 | $0 | View return |
| 2022 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Wnetorg | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | The James S Marcus Foundation | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2021 | Mastervoices Inc. | 990 | Vice-Chair | 2 | $0 | $0 | View return |
| 2021 | Pianofest Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2021 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 3 | $0 | $0 | View return |
| 2021 | Young Concert Artists Inc. | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2021 | Wnetorg | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | The James S Marcus Foundation | 990PF | Trustee/Part-Time | 0 | $0 | $0 | View return |
| 2020 | Mastervoices Inc. | 990 | Vice-Chair | 2 | $0 | $0 | View return |
| 2020 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2020 | Wnetorg | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 3 | $0 | $0 | View return |
| 2019 | The James S Marcus Foundation | 990PF | Trustee/Part-Time | 0 | $0 | $0 | View return |
| 2019 | Andover Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Mastervoices Inc. | 990 | Vice-Chair | 2 | $0 | $0 | View return |
| 2019 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2019 | Wnetorg | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 3 | $0 | $0 | View return |
| 2018 | Mastervoices Inc. | 990 | Vice-Chair | 5 | $0 | $0 | View return |
| 2018 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | Wnetorg | 990 | Trustee (Elected 3/12/19) | 1 | $0 | $0 | View return |
| 2018 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2018 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2017 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2017 | Mastervoices Inc. | 990 | Vice-Chair | 5 | $0 | $0 | View return |
| 2017 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2017 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Mastervoices Inc. | 990 | Vice-Chair | 5 | $0 | $0 | View return |
| 2016 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | American Associates Ben-Gurion University of the Negev Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2016 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2015 | The Metropolitan Opera Guild Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | American Associates Ben-Gurion University of the Negev Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2015 | Juilliard School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | American Associates Ben-Gurion University of the Negev Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Young Concert Artists Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2013 | American Associates Ben-Gurion University of the Negev Inc | 990 | Board Member | 1 | $0 | $0 | View return |