| 2024 | The Kavli Foundation | 990PF | Director | 3 | $42,274 | $0 | View return |
| 2024 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2023 | The Kavli Foundation | 990PF | Director | 3 | $35,500 | $0 | View return |
| 2023 | Health Effects Institute | 990 | Board Chairman | 2 | $25,000 | $0 | View return |
| 2023 | Efi Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2022 | The Kavli Foundation | 990PF | Director | 3 | $38,203 | $0 | View return |
| 2022 | Health Effects Institute | 990 | Board Chairman | 2 | $25,000 | $0 | View return |
| 2022 | Efi Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2022 | Efi Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Kavli Foundation | 990PF | Director | 3 | $37,000 | $0 | View return |
| 2021 | Health Effects Institute | 990 | Board Chairman | 2 | $16,250 | $0 | View return |
| 2021 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2020 | The Kavli Foundation | 990PF | Director | 3 | $31,000 | $0 | View return |
| 2020 | Foundation for Nuclear Studies | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2020 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2019 | The Kavli Foundation | 990PF | Director | 3 | $32,097 | $0 | View return |
| 2019 | Foundation for Nuclear Studies | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2019 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2018 | The Kavli Foundation | 990PF | Director | 3 | $25,500 | $0 | View return |
| 2018 | Foundation for Nuclear Studies | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2018 | Gmto Corporation | 990 | Board Member (Thru 10/18) | 1 | $0 | $0 | View return |
| 2018 | Carnegie Institution of Washington | 990 | Trustee, End May 2019 | 2 | $0 | $0 | View return |
| 2017 | The Kavli Foundation | 990PF | Director | 3 | $31,000 | $0 | View return |
| 2017 | Foundation for Nuclear Studies | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2017 | Maine Academy of Natural Sciences | 990 | Past Board Member | 1 | $0 | $0 | View return |
| 2017 | National Academy of Engineering Fund | 990 | Trustee (Jan-Jun) | 1 | $0 | $0 | View return |
| 2017 | Gmto Corporation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Carnegie Institution of Washington | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | The Kavli Foundation | 990PF | Director/ Investment Committee | 3 | $28,000 | $0 | View return |
| 2016 | Maine Academy of Natural Sciences | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Foundation for Nuclear Studies | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2016 | National Academy of Engineering Fund | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Gmto Corporation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Math for America DC | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2016 | Carnegie Institution of Washington | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | The Kavli Foundation | 990PF | Director | 3 | $25,500 | $0 | View return |
| 2015 | Foundation for Nuclear Studies | 990 | Board Member | 0.5 | $0 | $0 | View return |
| 2015 | National Academy of Engineering Fund | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Robert W & Gladys S Meserve Char Trust | 990PF | Co-Trustee | 1 | $0 | $0 | View return |
| 2015 | Gmto Corporation | 990 | Vice Chair, Bod As Of 10/9/15 | 1 | $0 | $0 | View return |
| 2015 | Math for America DC | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2015 | Carnegie Institution of Washington | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Carnegie Institution of Washington | 990 | President | 50 | $937,053 | $0 | View return |
| 2014 | The Kavli Foundation | 990PF | Director | 3 | $7,500 | $0 | View return |
| 2014 | National Academy of Engineering Fund | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Math for America DC | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2014 | Carnegie Institution of Washington | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Carnegie Institution of Washington | 990 | President | 50 | $466,140 | $0 | View return |
| 2013 | National Academy of Engineering Fund | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | National Academy of Engineering Fund | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Math for America DC | 990 | Secretary | 0.5 | $0 | $0 | View return |
| 2013 | Universities Research Association Inc. | 990 | Trustee | 1 | $0 | $0 | View return |