| 2024 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2024 | California League of Conservation Voters | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | California League of Conservation Voters | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2023 | The Children'S Fund | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2022 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2022 | California League of Conservation Voters | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | The Children'S Fund | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | The Children'S Fund | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | California League of Conservation Voters | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2020 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | The Children'S Fund | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2020 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2020 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2020 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2020 | American Go Association Inc | 990 | President | 20 | $0 | $0 | View return |
| 2019 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2019 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2019 | The Children'S Fund | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2019 | American Go Association Inc | 990 | President | 30 | $0 | $0 | View return |
| 2018 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2018 | The Children'S Fund | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2018 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2017 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2017 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2017 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2016 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2015 | Iwamoto North America Foundation for Go | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | The Ruthmarc Foundation Inc. | 990PF | President/Treasurer | 0 | $0 | $0 | View return |
| 2015 | The Children'S Fund | 990PF | Trustee | 0 | $0 | - | View return |
| 2015 | Princeton Day School Inc. | 990 | Treasurer | 2.3 | $0 | $0 | View return |
| 2015 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2014 | The Children'S Fund | 990PF | Trustee | 0 | $0 | - | View return |
| 2014 | New Jersey Seeds Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | California League of Conservation Voters | 990 | Director | 3 | $0 | $0 | View return |
| 2014 | Princeton Day School Inc. | 990 | Treasurer | 2.3 | $0 | $0 | View return |
| 2013 | Princeton Day School Inc. | 990 | Treasurer | 2.3 | $0 | $0 | View return |
| 2013 | New Jersey Seeds Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2012 | The Children'S Fund | 990PF | Trustee | 0 | $0 | - | View return |