| 2024 | Diplomacy Center Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2024 | Diplomacy Center Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | The Jewish Federation of Greater Washington Inc. | 990 | Past President (Thru 10/2023) | 2 | $0 | $0 | View return |
| 2022 | Diplomacy Center Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Council of American Ambassadors | 990 | Vice Chair & Treasurer | 1 | $0 | $0 | View return |
| 2022 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2022 | University of Maryland College Park Foundation Inc. | 990 | Honorary Trustee | 1 | $0 | $0 | View return |
| 2021 | Council of American Ambassadors | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2021 | Diplomacy Center Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2021 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2021 | University of Maryland College Park Foundation Inc. | 990 | Honorary Trustee | 1 | $0 | $0 | View return |
| 2021 | University of Maryland College Park Foundation Inc. | 990 | Honorary Trustee | 1 | $0 | $0 | View return |
| 2020 | Diplomacy Center Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2020 | Council of American Ambassadors | 990 | Vice Chair | 1 | $0 | $0 | View return |
| 2020 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2019 | Diplomacy Center Foundation | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2019 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2019 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2018 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2018 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2017 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2017 | University of Maryland Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2016 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2016 | University of Maryland Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2015 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2015 | University of Maryland Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2014 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2014 | University of Maryland Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2014 | The Jewish Federation of Greater Washington Inc. | 990 | Past President | 2 | $0 | $0 | View return |
| 2013 | Council of American Ambassadors | 990 | Vice Chair And Treasurer | 1 | $0 | $0 | View return |
| 2013 | The Jewish Federation of Greater Washington Inc. | 990 | Member | 0.7 | $0 | $0 | View return |
| 2013 | Woodrow Wilson International Center for Scholars | 990 | Chairman | 4 | $0 | $0 | View return |
| 2013 | University of Maryland Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2012 | Gildenhornspeisman Family Foundation C/O Dennis Speisman | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2011 | Gildenhornspeisman Family Foundation C/O Dennis Speisman | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2009 | Gildenhornspeisman Family Foundation C/O Dennis Speisman | 990PF | Secretary | 1 | $0 | $0 | View return |