| 2024 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2024 | Greater Sacramento Area Economic Council | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2023 | Greater Sacramento Area Economic Council | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2022 | University Development Foundation | 990PF | President | 10 | $0 | $0 | View return |
| 2022 | Greater Sacramento Area Economic Council | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | University Development Foundation | 990PF | President | 10 | $0 | $0 | View return |
| 2021 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2021 | Greater Sacramento Area Economic Council | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | University Development Foundation | 990PF | President | 10 | $0 | $0 | View return |
| 2020 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2020 | Tsakopoulos Hellenic Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2019 | University Development Foundation | 990PF | President | 5 | $0 | $0 | View return |
| 2019 | California Building Industry Association | 990 | Director | 0.5 | $0 | $0 | View return |
| 2019 | Tsakopoulos Hellenic Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2018 | California Building Industry Association | 990 | Director | 0.5 | $0 | $0 | View return |
| 2018 | Tsakopoulos Hellenic Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2018 | University Development Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2018 | Greater Sacramento Area Economic Council | 990 | Chairman (Thru 06/30/19) | 1 | $0 | $0 | View return |
| 2018 | The Trustees of Columbia University in the City of New York | 990 | Trustee (Through 9/3/18) | 4 | $0 | $0 | View return |
| 2017 | Tsakopoulos Hellenic Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2017 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2017 | University Development Foundation | 990PF | President | 1.5 | $0 | $0 | View return |
| 2017 | Greater Sacramento Area Economic Council | 990 | Chairman | 1 | $0 | $0 | View return |
| 2017 | The Trustees of Columbia University in the City of New York | 990 | Trustee | 4 | $0 | $0 | View return |
| 2016 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2016 | University Development Foundation | 990 | President & CEO | 2 | $0 | $0 | View return |
| 2016 | Sunridge Conservancy | 990PF | President | 1 | $0 | - | View return |
| 2016 | Sacramento Regional Family Justice Center Foundation Inc | 990 | Director | 5 | $0 | $0 | View return |
| 2016 | Tsakopoulos Hellenic Foundation | 990PF | President & CEO | 1 | $0 | - | View return |
| 2016 | Greater Sacramento Area Economic Council | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2016 | The Trustees of Columbia University in the City of New York | 990 | Trustee | 4 | $0 | $0 | View return |
| 2015 | University Development Foundation | 990 | President & CEO | 1 | $0 | $0 | View return |
| 2015 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2015 | Sunridge Conservancy | 990PF | President | 1 | $0 | - | View return |
| 2015 | Tsakopoulos Hellenic Foundation | 990PF | President & CEO | 1 | $0 | - | View return |
| 2015 | Greater Sacramento Area Economic Council | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The Trustees of Columbia University in the City of New York | 990 | Trustee | 4 | $0 | $0 | View return |
| 2015 | Sacramento Regional Family Justice Center Foundation Inc | 990 | Director | 5 | $0 | $0 | View return |
| 2014 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2014 | Greater Sacramento Area Economic Council | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Sacramento Regional Family Justice Center Foundation Inc | 990 | Director | 5 | $0 | $0 | View return |
| 2014 | The Trustees of Columbia University in the City of New York | 990 | Trustee | 4 | $0 | $0 | View return |
| 2014 | Tsakopoulos Hellenic Foundation | 990PF | President & CEO | 1 | $0 | - | View return |
| 2013 | The National Hellenic Society Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2013 | American Hellenic Institute Foundation Inc. | 990 | Director | 5 | $0 | $0 | View return |
| 2013 | The Trustees of Columbia University in the City of New York | 990 | Trustee | 3 | $0 | $0 | View return |
| 2013 | Tsakopoulos Hellenic Foundation | 990PF | President & CEO | 1 | $0 | - | View return |
| 2012 | Sunridge Conservancy | 990PF | President & CEO | 1 | $0 | - | View return |
| 2012 | Tsakopoulos Hellenic Foundation | 990PF | President & CEO | 1 | $0 | - | View return |
| 2011 | Sunridge Conservancy | 990PF | President & CEO | 1 | $0 | - | View return |
| 2010 | Sunridge Conservancy | 990PF | President & CEO | 1 | $0 | - | View return |