| 2024 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2024 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2024 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2023 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2023 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2023 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2023 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2022 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2022 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2022 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2021 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2021 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2021 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2020 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2020 | Boundary Waters Action Fund | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2019 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2019 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2019 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2018 | Boundary Waters Action Fund | 990EZ | Director | 1 | $0 | $0 | View return |
| 2018 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2018 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2017 | Northeastern Minnesotans for Wilderness | 990 | Secretary | 2 | $0 | $0 | View return |
| 2017 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2016 | Northeastern Minnesotans for Wilderness | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0 | $0 | $0 | View return |
| 2015 | Arthur & David Cosgrove Memprial Foundation | 990PF | Officer | 0.1 | $0 | $0 | View return |
| 2014 | Friends of the Boundary Waters Wilderness Action Network | 990EZ | Director | 1 | $0 | - | View return |
| 2014 | Friends of the Boundary Waters Wilderness | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2014 | Friends of the Boundary Waters Wilderness Action Network | 990EZ | Treasurer | 1 | $0 | - | View return |
| 2013 | Friends of the Boundary Waters Wilderness | 990 | Treasurer | 1 | $0 | $0 | View return |
| 2012 | Quetico Superior Foundation | 990PF | Treasurer | 1 | $0 | $0 | View return |
| 2011 | Quetico Superior Foundation | 990PF | Treasurer | 1 | $0 | $0 | View return |