| 2024 | The Summit Charitable Foundation Inc | 990PF | Chairman | 4 | $0 | $0 | View return |
| 2024 | Matsui Foundation Inc. | 990PF | Treasurer & Secretary | 1 | $0 | $0 | View return |
| 2024 | Pbs Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | World Wildlife Fund Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | The Summit Charitable Foundation Inc | 990PF | Chairman | 4 | $0 | $0 | View return |
| 2023 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2023 | Pbs Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | World Wildlife Fund Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | The Summit Charitable Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2022 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2022 | Pbs Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | World Wildlife Fund Inc. | 990 | Director (As Of 10/2022) | 1 | $0 | $0 | View return |
| 2022 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Summit Charitable Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2021 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2021 | Pbs Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | World Wildlife Fund Inc. | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2020 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2020 | The Summit Charitable Foundation Inc | 990PF | Chairman | 5 | $0 | $0 | View return |
| 2020 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | World Wildlife Fund Inc. | 990 | Vice Chairman | 0 | $0 | $0 | View return |
| 2019 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2019 | World Wildlife Fund Inc. | 990 | Vice Chairman | 0 | $0 | $0 | View return |
| 2019 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2018 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | World Wildlife Fund Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2017 | World Wildlife Fund Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2016 | World Wildlife Fund Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | Lang Lang International Music Foundation Inc. | 990 | Director Thru May 2016 | 0.5 | $0 | $0 | View return |
| 2016 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The Summit Fund of Washington | 990 | Chairman | 1 | $0 | $0 | View return |
| 2015 | World Wildlife Fund Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | Sant Charitable Foundation Inc | 990PF | Co-Chair/Director | 1 | $0 | $0 | View return |
| 2015 | Lang Lang International Music Foundation Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | World Resources Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | District of Columbia College Access Program | 990 | Director - Until 1/2017 | 1 | $0 | $0 | View return |
| 2014 | The Summit Fund of Washington | 990 | Chairman | 1 | $0 | $0 | View return |
| 2014 | Lang Lang International Music Foundation Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | World Wildlife Fund Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2014 | District of Columbia College Access Program | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | World Wildlife Fund Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2013 | District of Columbia College Access Program | 990 | Director | 1 | $0 | $0 | View return |