| 2025 | Andover Historical Society | 990EZ | Trustee | 5 | $0 | - | View return |
| 2025 | Denver Advisory Board Inc | 990EZ | Director, Peer Advisory Groups Chair | 2 | $0 | $0 | View return |
| 2024 | Denver Advisory Board Inc | 990EZ | Director, Peer Advisory Groups Chair | 2 | $0 | $0 | View return |
| 2024 | Andover Historical Society | 990EZ | Trustee | 2 | $0 | - | View return |
| 2023 | Denver Advisory Board Inc | 990EZ | Director, Peer Advisory Groups Chair | 1 | $0 | $0 | View return |
| 2023 | Andover Historical Society | 990EZ | Trustee | 2 | $0 | - | View return |
| 2023 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2023 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2023 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | Progress Now Education | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2022 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2022 | Denver Advisory Board Inc | 990EZ | Director, Peer Advisory Groups Chair | 1 | $0 | $0 | View return |
| 2021 | Denver Advisory Board Inc | 990EZ | Director, Peer Advisory Groups Chair | 2 | $0 | $0 | View return |
| 2021 | Progress Now Education | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Environment Colorado Research and Policy Center Inc | 990EZ | President, Director | 1 | $0 | $0 | View return |
| 2021 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2021 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2021 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2020 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $9,983 | View return |
| 2020 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $9,983 | View return |
| 2020 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | Progress Now Education | 990 | President | 1 | $0 | $0 | View return |
| 2020 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2019 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Progress Now Education | 990 | President | 1 | $0 | $0 | View return |
| 2019 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2019 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2019 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2018 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | Progress Now Education | 990 | President | 1 | $0 | $0 | View return |
| 2018 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2018 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2018 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2017 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Progress Now Education | 990 | President | 1 | $0 | $0 | View return |
| 2017 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2017 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2017 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | Progress Now Inc | 990 | Board Member | - | $0 | $0 | View return |
| 2016 | Progress Now Education | 990 | President | 1 | $0 | $0 | View return |
| 2016 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2016 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | California Public Interest Research Group Inc | 990 | President | 1 | $0 | $0 | View return |
| 2015 | Environment Colorado Research and Policy Center Inc | 990EZ | President | 0.5 | $0 | - | View return |
| 2015 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Progress Now Education | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Colorado Democracy Network | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2015 | United States Public Interest Research Group Inc | 990 | Chair | 0.5 | $0 | $0 | View return |
| 2015 | California Public Interest Research Group Inc | 990 | Chair | 1 | $0 | $0 | View return |
| 2015 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Environment Colorado Research and Policy Center Inc | 990EZ | President | 0.5 | $0 | - | View return |
| 2014 | Colorado Democracy Network | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2014 | Progress Now Education | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Environment America Research and Policy Center Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | California Public Interest Research Group Inc | 990 | Chair | 1 | $0 | $0 | View return |
| 2013 | Colorado Democracy Network | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2013 | Progress Now Education | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Progress Now Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Environment America Research and Policy Center Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | California Public Interest Research Group Inc | 990 | Chair | 1 | $0 | $0 | View return |