| 2024 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2024 | Oceanit Research Foundation | 990PF | Vice President | 5 | $0 | $0 | View return |
| 2024 | American Friends of Lafayette | 990 | Director | 20 | $0 | $0 | View return |
| 2024 | Erc Foundation Inc. | 990 | Member | 1 | $0 | $0 | View return |
| 2023 | Killingworth Library Association Inc. | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2023 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Oceanit Research Foundation | 990PF | Vice President | 5 | $0 | $0 | View return |
| 2023 | Erc Foundation Inc. | 990 | Member | 1 | $0 | $0 | View return |
| 2023 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2023 | American Friends of Lafayette | 990 | Director | 15 | $0 | $0 | View return |
| 2022 | Oceanit Research Foundation | 990PF | Vice President | 5 | $0 | $0 | View return |
| 2022 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2022 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Killingworth Library Association Inc. | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2022 | American Friends of Lafayette | 990EZ | Director | 15 | $0 | $0 | View return |
| 2021 | Killingworth Library Association Inc. | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2021 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2021 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | American Friends of Lafayette | 990EZ | Director | 10 | $0 | $0 | View return |
| 2020 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2020 | Killingworth Library Association Inc. | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2019 | Borrego Community Health Foundation | 990 | Chief Research Officer | 40 | $401,885 | $0 | View return |
| 2019 | Borrego Community Health Foundation | 990 | Chief Research Officer | 40 | $401,885 | $0 | View return |
| 2019 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2019 | Friends of Southwest Regional Library | 990EZ | Secretary | 5 | $0 | - | View return |
| 2019 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2018 | Borrego Community Health Foundation | 990 | Chief Research Officer | 40 | $405,830 | $0 | View return |
| 2018 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2018 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Direct | 0 | $0 | $0 | View return |
| 2017 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Oceanit Research Foundation | 990PF | Treasurer | 0 | $0 | $0 | View return |
| 2016 | Roy and Hilda Takeyama Foundation | 990PF | President/Secretary/Director | 0 | $0 | $0 | View return |
| 2015 | Roy and Hilda Takeyama Foundation | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2015 | Hawaii Nature Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | Oceanit Research Foundation | 990PF | Treasurer | 0 | $0 | $0 | View return |
| 2015 | Oahu Economic Development Board | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Oceanit Research Foundation | 990PF | Treasurer | 0 | $0 | $0 | View return |
| 2014 | Hawaii Nature Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Roy and Hilda Takeyama Foundation | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2013 | Oceanit Research Foundation | 990PF | Treasurer | 0 | $0 | $0 | View return |
| 2013 | Hawaii Nature Center Inc. | 990 | Past President | 0.5 | $0 | $0 | View return |
| 2012 | Oceanit Research Foundation | 990PF | Treasurer | 0 | $0 | $0 | View return |
| 2011 | Oceanit Research Foundation | 990PF | Treasurer | 0 | $0 | $0 | View return |
| 2011 | Roy and Hilda Takeyama Foundation | 990PF | Secretary/Director | 0 | $0 | $0 | View return |
| 2010 | Roy and Hilda Takeyama Foundation | 990PF | Secretary/Director | 0 | $0 | $0 | View return |