| 2025 | Re Synergy Foundation | 990EZ | Secretary/Dirct | 0 | $0 | - | View return |
| 2024 | Sexual Medicine Society of North America | 990 | Director | 1 | $6,250 | $0 | View return |
| 2024 | Iowa Biotechnology Association | 990 | Director/Chair | 2 | $0 | $0 | View return |
| 2024 | Re Synergy Foundation | 990EZ | Secretary/Dirct | 0 | $0 | - | View return |
| 2024 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2024 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Algae Biomass Organization | 990 | Past Preside | - | $0 | $0 | View return |
| 2023 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2023 | Washington Institute for Near East Policy | 990 | Chairman Emeritus | 3 | $0 | $0 | View return |
| 2023 | Re Synergy Foundation | 990EZ | Secretary/Dirct | 0 | $0 | - | View return |
| 2023 | Sexual Medicine Society of North America | 990 | Surgical Committee Chair | 1 | $0 | $0 | View return |
| 2023 | National Sunroom Association | 990EZ | President | 0.5 | $0 | $0 | View return |
| 2023 | The New York Historical Society | 990 | Trustee (End 10/2023) | 1 | $0 | $0 | View return |
| 2022 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Washington Institute for Near East Policy | 990 | Chairman Emeritus | 3 | $0 | $0 | View return |
| 2022 | Algae Biomass Organization | 990 | President | 4 | $0 | $0 | View return |
| 2022 | Re Synergy Foundation | 990EZ | Secretary/Dirct | 0 | $0 | - | View return |
| 2022 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2022 | Cheltenham Township Adult School | 990 | Treasurer | 5 | $0 | $0 | View return |
| 2022 | National Sunroom Association | 990EZ | President | 0.5 | $0 | $0 | View return |
| 2022 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2021 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2021 | Algae Biomass Organization | 990 | Vice Preside | 2 | $0 | $0 | View return |
| 2021 | Washington Institute for Near East Policy | 990 | Chairman Emeritus | 3 | $0 | $0 | View return |
| 2021 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Cheltenham Township Adult School | 990 | Treasurer | - | $0 | $0 | View return |
| 2021 | National Sunroom Association | 990EZ | President | 0.5 | $0 | $0 | View return |
| 2020 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2020 | Washington Institute for Near East Policy | 990 | Chairman Emeritus | 3 | $0 | $0 | View return |
| 2020 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2020 | National Sunroom Association | 990EZ | President | 0.5 | $0 | $0 | View return |
| 2020 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Cheltenham Township Adult School | 990 | Treasurer | 5 | $0 | $0 | View return |
| 2019 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2019 | Washington Institute for Near East Policy | 990 | Chairman Emeritus | 3 | $0 | $0 | View return |
| 2019 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2019 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Cheltenham Township Adult School | 990 | Treasurer | - | $0 | $0 | View return |
| 2019 | National Sunroom Association | 990EZ | President | 0.5 | $0 | $0 | View return |
| 2018 | Cheltenham Township Adult School | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2018 | Washington Institute for Near East Policy | 990 | Chairman, Then Ch. Emeritus (May'18) | 3 | $0 | $0 | View return |
| 2018 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2018 | Committee for Accuracy in Middle East Reporting in America Inc. | 990 | Director | - | $0 | $0 | View return |
| 2018 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | National Sunroom Association | 990EZ | President | 0.5 | $0 | $0 | View return |
| 2017 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2017 | Washington Institute for Near East Policy | 990 | Chairman | 3 | $0 | $0 | View return |
| 2017 | Committee for Accuracy in Middle East Reporting in America Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | Cheltenham Township Adult School | 990 | Treasurer | 5 | $0 | $0 | View return |
| 2017 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2017 | National Sunroom Association | 990EZ | President | 2 | $0 | $0 | View return |
| 2017 | Brandeis University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Brandeis University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2016 | Cheltenham Township Adult School | 990 | Treasurer | 5 | $0 | $0 | View return |
| 2016 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Washington Institute for Near East Policy | 990 | Chairman | 3 | $0 | $0 | View return |
| 2016 | Committee for Accuracy in Middle East Reporting in America Inc. | 990 | Director | - | $0 | $0 | View return |
| 2016 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2016 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Brandeis University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Brandeis University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | New Hampshire Center for Public Policy Studies | 990 | Director | - | $0 | $0 | View return |
| 2015 | The Martin J Gross Family Foundation I | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2015 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2015 | Cheltenham Township Adult School | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2015 | Committee for Accuracy in Middle East Reporting in America Inc. | 990 | Director | - | $0 | $0 | View return |
| 2015 | Washington Institute for Near East Policy | 990 | Chairman | 3 | $0 | $0 | View return |
| 2015 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Brandeis University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2014 | New Hampshire Center for Public Policy Studies | 990 | Director | - | $0 | $0 | View return |
| 2014 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Committee for Accuracy in Middle East Reporting in America Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Brandeis University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Friars National Association Foundation Inc | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2014 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2013 | New Hampshire Center for Public Policy Studies | 990 | Director | - | $0 | $0 | View return |
| 2013 | Choice Housing Corp | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Capitol Center for the Arts | 990 | Emeritus Board | 0 | $0 | $0 | View return |
| 2013 | The New York Historical Society | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Brandeis University | 990 | Trustee | 1 | - | - | View return |
| 2013 | Friars National Association Foundation Inc | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2012 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2011 | Gross Family Foundation | 990PF | Director | 1 | $0 | - | View return |
| 2010 | Gross Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |