| 2025 | Associates for Breast and Prostate Cancer Studies | 990EZ | Vice President | 10 | $0 | $0 | View return |
| 2024 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 0 | $0 | $0 | View return |
| 2024 | Associates for Breast and Prostate Cancer Studies | 990EZ | Vice President | 10 | $0 | $0 | View return |
| 2023 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2023 | Associates for Breast and Prostate Cancer Studies | 990EZ | Vice President | 10 | $0 | $0 | View return |
| 2023 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 0 | $0 | $0 | View return |
| 2023 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2022 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2022 | Associates for Breast and Prostate Cancer Studies | 990EZ | Vice President | 10 | $0 | $0 | View return |
| 2022 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 0 | $0 | $0 | View return |
| 2022 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2021 | Pittsburgh Bridge Association | 990EZ | Voting Board Member | 1 | $0 | $0 | View return |
| 2021 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 0 | $0 | $0 | View return |
| 2021 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2021 | Associates for Breast and Prostate Cancer Studies | 990EZ | Vice President | 10 | $0 | $0 | View return |
| 2021 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2020 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2020 | Associates for Breast and Prostate Cancer Studies | 990EZ | Vice President | 10 | $0 | $0 | View return |
| 2020 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 2 | $0 | $0 | View return |
| 2020 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2019 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2019 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2019 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 2 | $0 | $0 | View return |
| 2019 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2018 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2018 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 2 | $0 | $0 | View return |
| 2018 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2018 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2018 | Anti-Defamation League | 990 | Ntl Commissioner (Thru 11/18) | 1 | $0 | $0 | View return |
| 2018 | Hofstra University | 990 | Trustee (Until October 2018) | 2 | $0 | $0 | View return |
| 2017 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2017 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2017 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 2 | $0 | $0 | View return |
| 2017 | Nassau County Police Department Foundation Inc. | 990 | Director | 10 | $0 | $0 | View return |
| 2017 | Anti-Defamation League | 990 | National Commissioner | 1 | $0 | $0 | View return |
| 2017 | Hofstra University | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Ort America Inc. | 990 | Chief Executive Officer | 35 | $235,000 | $0 | View return |
| 2016 | Ort America Inc. | 990 | Chief Executive Officer | 35 | $235,000 | $0 | View return |
| 2016 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 2 | $0 | $0 | View return |
| 2016 | Lake Saint Catherine Association Inc. | 990EZ | Trustee | 1 | $0 | - | View return |
| 2016 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2016 | Anti-Defamation League | 990 | National Commissioner | 1 | $0 | $0 | View return |
| 2016 | Nassau County Police Department Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2016 | Hofstra University | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | Ort America Inc. | 990 | Executive Director | 35 | $111,173 | $0 | View return |
| 2015 | Anti-Defamation League | 990 | National Commissioner | 1 | $0 | $0 | View return |
| 2015 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2015 | Nassau County Police Department Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Martin and Jane Greenberg Foundation Inc. | 990PF | President/Director | 2 | $0 | $0 | View return |
| 2015 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2015 | Hofstra University | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | The Jewish Federations of North America Inc. | 990 | Assoc. VP Of Comm Engageme | 40 | $191,040 | $0 | View return |
| 2014 | Anti-Defamation League | 990 | Member, Nat'L Commission | 1 | $0 | $0 | View return |
| 2014 | The Martin B Greenberg Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2014 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2014 | Hofstra University | 990 | Trustee | 2 | $0 | $0 | View return |
| 2013 | The Jewish Federations of North America Inc. | 990 | Assoc. VP Of Comm Engagement | 40 | $184,205 | $0 | View return |
| 2013 | Associates for Breast and Prostate Cancer Studies | 990 | Vice President | 10 | $0 | $0 | View return |
| 2013 | Anti-Defamation League | 990 | Member, Nat'L Commission | 1 | $0 | $0 | View return |
| 2013 | Westchester Hills Golf Club Inc | 990 | Trustee | 2 | $0 | $0 | View return |
| 2013 | Reading and Radio Resource | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | Hofstra University | 990 | Trustee | 2 | - | - | View return |