| 2024 | The Fruitful Field Inc. | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2024 | Schwechheimer Family Foundation | 990EZ | Director | 0 | $0 | $0 | View return |
| 2024 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2024 | Friends of the Neuberger Museum of Art Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | The German Marshall Fund of the United States | 990 | Trustee (Thru 7/2023) | 1 | $0 | $0 | View return |
| 2023 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2023 | Schwechheimer Family Foundation | 990EZ | Director | 0 | $0 | $0 | View return |
| 2023 | Friends of the Neuberger Museum of Art Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | C & O Canal Trust Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Schwechheimer Family Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2022 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | Fort Lauderdale Historical Society Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Coming Together Festival of Dance & Music | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | C & O Canal Trust Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2021 | Schwechheimer Family Foundation | 990EZ | Director | 1 | $0 | $0 | View return |
| 2021 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | Fort Lauderdale Historical Society Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | C & O Canal Trust Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | The American Academy of Diplomacy | 990 | Vice Chairman | 0.25 | $0 | $0 | View return |
| 2020 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2020 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | C & O Canal Trust Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Fort Lauderdale Historical Society Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Schwechheimer Family Foundation | 990EZ | Director | 1 | $0 | $0 | View return |
| 2019 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | The American Academy of Diplomacy | 990 | Vice Chairman | 0.25 | $0 | $0 | View return |
| 2019 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | C & O Canal Trust Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2018 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2018 | The American Academy of Diplomacy | 990 | Vice Chairman | 0.25 | $0 | $0 | View return |
| 2018 | Schwechheimer Family Foundation | 990EZ | Director | 1 | $0 | $0 | View return |
| 2018 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2018 | New York State Trial Lawyers' Association Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2017 | The American Academy of Diplomacy | 990 | Vice Chairman | 0.25 | $0 | $0 | View return |
| 2017 | New York State Trial Lawyers' Association Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Susan B Anthony Center Inc | 990 | Treasurer | 4 | $0 | $0 | View return |
| 2016 | Coming Together Festival of Dance & Music | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2016 | The American Academy of Diplomacy | 990 | Vice Chairman Of The Board | 0.25 | $0 | $0 | View return |
| 2016 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2016 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | New York State Trial Lawyers' Association Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Trustees of Robert College of Istanbul | 990 | Trustee (To 5/17) | 0.3 | $0 | $0 | View return |
| 2016 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2015 | The American Academy of Diplomacy | 990 | Vice Chairman Of The Board | 1 | $0 | $0 | View return |
| 2015 | Susan B Anthony Center Inc | 990 | Treasurer | 4 | $0 | $0 | View return |
| 2015 | Next Stage Productions | 990PF | Director-At-Large | 2 | $0 | $0 | View return |
| 2015 | Coming Together Festival of Dance & Music | 990 | Director | - | $0 | $0 | View return |
| 2015 | Trustees of Robert College of Istanbul | 990 | Trustee | 0.3 | $0 | $0 | View return |
| 2015 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | The American Academy of Diplomacy | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2014 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2014 | Coming Together Festival of Dance & Music | 990 | Director | - | $0 | $0 | View return |
| 2014 | UC Santa Barbara Foundation | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | Trustees of Robert College of Istanbul | 990 | Trustee | 0.3 | $0 | $0 | View return |
| 2014 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Senior Living Foundation of the American Foreign Service Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2013 | The American Academy of Diplomacy | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2013 | The German Marshall Fund of the United States | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Trustees of Robert College of Istanbul | 990 | Trustee (Eff 4/14) | 0.3 | $0 | $0 | View return |