| 2024 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $92,689 | - | View return |
| 2024 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $43,527 | $0 | View return |
| 2024 | Columbia University Trust | 990PF | Trustee | 10 | $25,751 | $0 | View return |
| 2024 | H Bruce Stahl Trust FBO Middlebury College | 990PF | Trustee | 1 | $14,553 | $0 | View return |
| 2024 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $10,389 | $0 | View return |
| 2023 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $83,116 | - | View return |
| 2023 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $34,372 | $0 | View return |
| 2023 | Columbia University Trust | 990PF | Trustee | 10 | $24,596 | $0 | View return |
| 2023 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $10,678 | $0 | View return |
| 2022 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $80,854 | - | View return |
| 2022 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $35,995 | $0 | View return |
| 2022 | Columbia University Trust | 990PF | Trustee | 10 | $33,368 | $0 | View return |
| 2022 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $0 | $0 | View return |
| 2021 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $88,440 | - | View return |
| 2021 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $36,665 | - | View return |
| 2021 | Columbia University Trust | 990PF | Trustee | 10 | $28,257 | $0 | View return |
| 2021 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $11,315 | $0 | View return |
| 2020 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $80,735 | - | View return |
| 2020 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $35,908 | - | View return |
| 2020 | Columbia University Trust | 990PF | Trustee | 10 | $28,768 | $0 | View return |
| 2020 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $9,766 | $0 | View return |
| 2019 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $75,022 | - | View return |
| 2019 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $33,557 | - | View return |
| 2019 | Columbia University Trust | 990PF | Trustee | 10 | $26,052 | $0 | View return |
| 2019 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $9,453 | $0 | View return |
| 2018 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $74,861 | - | View return |
| 2018 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $26,302 | - | View return |
| 2018 | Columbia University Trust | 990PF | Trustee | 10 | $22,984 | $0 | View return |
| 2018 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $8,795 | $0 | View return |
| 2018 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $8,795 | $0 | View return |
| 2017 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $23,538 | - | View return |
| 2017 | Columbia University Trust | 990PF | Trustee | 10 | $21,436 | $0 | View return |
| 2017 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $8,310 | - | View return |
| 2017 | Fund for Individual Potential | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2016 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $68,860 | - | View return |
| 2016 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $7,997 | - | View return |
| 2015 | Fund for Individual Potential | 990PF | Trustee | 2 | $243,270 | - | View return |
| 2015 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $70,695 | - | View return |
| 2015 | Elsie Alder Bissing Trust Ua 3942 | 990PF | Trustee | 10 | $8,253 | - | View return |
| 2014 | The Jack and Vivian Hanson Foundation | 990PF | Trustee | 4 | $72,086 | - | View return |
| 2013 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $10,118 | $0 | View return |
| 2012 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $11,750 | $0 | View return |
| 2011 | The Glenn L Martin Foundation | 990PF | Trustee | 1 | $12,264 | $0 | View return |