| 2024 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee (Thru 3 /14/24) | 2.5 | $0 | $0 | View return |
| 2024 | The Leonsis Foundation Inc. | 990PF | Secretary | 0 | $0 | - | View return |
| 2024 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2023 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2023 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2023 | The Leonsis Foundation Inc. | 990PF | Secretary | 0 | $0 | - | View return |
| 2022 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2022 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2022 | The Leonsis Foundation Inc. | 990PF | Secretary | 0 | $0 | - | View return |
| 2022 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2021 | The Leonsis Foundation Inc. | 990PF | Secretary | 0 | $0 | - | View return |
| 2021 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2021 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2020 | The Leonsis Foundation Inc. | 990PF | Secretary | 0 | $0 | - | View return |
| 2020 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2020 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2019 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2019 | The Leonsis Foundation Inc. | 990PF | Secretary | 0 | $0 | - | View return |
| 2019 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2019 | The National Hellenic Society Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2018 | The National Hellenic Society Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2017 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2017 | The National Hellenic Society Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2017 | The Shakespeare Theatre | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2016 | The National Hellenic Society Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2016 | The Shakespeare Theatre | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | The National Hellenic Society Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2015 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2015 | Youth Improving Non-Profits for Children | 990 | Director (Thru 7/2015) | 1 | $0 | $0 | View return |
| 2015 | The Shakespeare Theatre | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Leonsis Foundation Inc. | 990PF | Director & Secretary | 0 | $0 | - | View return |
| 2014 | Youth Improving Non-Profits for Children | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Hellenic Initiative Inc. | 990 | Co-President | 10 | $0 | $0 | View return |
| 2014 | Cycladic Art Foundation Co Forvis Mazars LLP | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2014 | The Shakespeare Theatre | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Shakespeare Theatre | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | The National Hellenic Society Inc | 990 | Officer | 1 | $0 | $0 | View return |
| 2013 | The Leonsis Foundation Inc. | 990PF | Director & Secretary | 0 | $0 | - | View return |
| 2013 | Hellenic Initiative Inc. | 990 | Co-Founder | 15 | $0 | $0 | View return |
| 2013 | The Shakespeare Theatre | 990 | Trustee | 1 | $0 | $0 | View return |
| 2012 | The Leonsis Foundation Inc. | 990PF | Director & Secretary | 0 | $0 | $0 | View return |
| 2011 | The Leonsis Foundation Inc. | 990PF | Director & Secretary | 0 | $0 | - | View return |
| 2010 | The Leonsis Foundation Inc. | 990PF | Director & Secretary | 0 | $0 | $0 | View return |