| 2024 | Net Zero Vermont Incorporated | 990EZ | Treasurer | 1 | $0 | - | View return |
| 2024 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2023 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2023 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Net Zero Vermont Incorporated | 990EZ | Treasury/Secretary | 1 | $0 | $0 | View return |
| 2023 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2022 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2022 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2021 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2021 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2020 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2020 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2019 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2019 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2018 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2018 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2017 | Distributed Wind Energy Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2017 | Metafoundation | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2016 | Planned Parenthood of Northern New England Action Fund Inc | 990EZ | Past Trustee | 0.5 | $0 | $0 | View return |
| 2016 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2016 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Distributed Wind Energy Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Planned Parenthood of Northern | 990 | Past Trustee | 2 | $0 | $0 | View return |
| 2016 | Wentworth Institute of Technology Inc | 990 | Trustee | 4 | $0 | $0 | View return |
| 2016 | Champ P3 Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | Champ P3 Inc | 990 | Director | 0.1 | $0 | $0 | View return |
| 2015 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2015 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Aspo USA Inc | 990EZ | Director | 5 | $0 | - | View return |
| 2015 | Planned Parenthood of Northern New England Action Fund Inc | 990EZ | Trustee | 2 | $0 | $0 | View return |
| 2015 | Planned Parenthood of Northern | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Planned Parenthood of Northern | 990 | Trustee | 2 | $0 | $0 | View return |
| 2014 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2014 | Aspo USA Inc | 990EZ | Director | 5 | $0 | $0 | View return |
| 2014 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Small Wind Certification Council | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2013 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2013 | Vermont Business Association for Social Responsibility | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Planned Parenthood of Northern | 990 | Trustee | 2 | $0 | $0 | View return |
| 2013 | Renewable Energy Vermont Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Aspo USA Inc | 990EZ | Director | 5 | $0 | $0 | View return |
| 2012 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2011 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2010 | Blittersdorf Family Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |