| 2025 | Iowa Agricultural Mitigation Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2024 | Iowa Drainage District Association | 990 | Executive Director | 40 | $119,911 | $0 | View return |
| 2024 | Iowa Agricultural Mitigation Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2023 | Iowa Drainage District Association | 990 | Executive Director | 40 | $112,369 | $0 | View return |
| 2023 | Iowa Agricultural Mitigation Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2023 | Agricultural Drainage Management Coalition Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Iowa Drainage District Association | 990 | Executive Director | 40 | $109,270 | $0 | View return |
| 2022 | Agricultural Drainage Management Coalition Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Iowa Agricultural Mitigation Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2021 | Iowa Drainage District Association | 990 | Executive Director | 40 | $105,467 | $0 | View return |
| 2021 | Agricultural Drainage Management Coalition Inc | 990EZ | Director | 1 | $0 | $0 | View return |
| 2021 | Iowa Agricultural Mitigation Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2021 | The Great School of Natural Science | 990 | Treasurer | - | $0 | $0 | View return |
| 2020 | Iowa Drainage District Association | 990 | Executive Director | 40 | $0 | $0 | View return |
| 2020 | Iowa Agricultural Mitigation Inc | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2020 | The Great School of Natural Science | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2019 | Iowa Drainage District Association | 990 | Executive Director | 40 | $98,720 | $0 | View return |
| 2019 | The Great School of Natural Science | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2019 | Iowa Agricultural Mitigation Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | Iowa Drainage District Association | 990 | Executive Director | 40 | $98,499 | $0 | View return |
| 2018 | The Great School of Natural Science | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2018 | Iowa Agricultural Mitigation Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | The Great School of Natural Science | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2017 | Iowa Drainage District Association | 990 | Executive Director | 40 | $101,762 | $0 | View return |
| 2017 | Iowa Agricultural Mitigation Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | The Great School of Natural Science | 990 | President | 10 | $0 | $0 | View return |
| 2016 | Iowa Drainage District Association | 990 | Executive Director | 40 | $97,674 | $0 | View return |
| 2016 | The Great School of Natural Science | 990 | President | 10 | $0 | $0 | View return |
| 2016 | Iowa Agricultural Mitigation Inc | 990EZ | Director | 2 | $0 | - | View return |
| 2015 | The Great School of Natural Science | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2014 | The Great School of Natural Science | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2013 | The Great School of Natural Science | 990 | Treasurer | 10 | $0 | $0 | View return |