| 2024 | Iowa Natural Heritage Foundation | 990 | President | 40 | $179,922 | $0 | View return |
| 2024 | Northern California Electrical Electronic Representatives Association | 990 | President | 4 | $0 | $0 | View return |
| 2024 | Yarmouth Day Care | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Iowa Natural Heritage Foundation | 990 | President | 40 | $181,350 | $0 | View return |
| 2023 | Northern California Electrical Electronic Representatives Association | 990 | Treasurer | 4 | $0 | $0 | View return |
| 2023 | Yarmouth Day Care | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Iowa Natural Heritage Foundation | 990 | President | 40 | $179,591 | $0 | View return |
| 2021 | Iowa Natural Heritage Foundation | 990 | President | 40 | $158,469 | $0 | View return |
| 2021 | Northern California Electrical Electronic Representatives Association | 990 | Secretary | 4 | $0 | $0 | View return |
| 2020 | Iowa Natural Heritage Foundation | 990 | President | 40 | $161,487 | $0 | View return |
| 2020 | Midwest Reliability Organization Inc. | 990 | Board Member (Part Year) | 5 | $0 | $0 | View return |
| 2019 | Iowa Natural Heritage Foundation | 990 | President | 40 | $159,185 | $0 | View return |
| 2019 | Midwest Reliability Organization Inc. | 990 | Board Member | 5 | $0 | $0 | View return |
| 2018 | Iowa Natural Heritage Foundation | 990 | President | 40 | $157,888 | $0 | View return |
| 2018 | Midwest Reliability Organization Inc. | 990 | Board Member | 5 | $0 | $0 | View return |
| 2017 | Iowa Natural Heritage Foundation | 990 | President | 40 | $155,208 | $0 | View return |
| 2017 | Midwest Reliability Organization Inc. | 990 | Board Member | 3 | $0 | $0 | View return |
| 2017 | South Texas Geological Society | 990EZ | Bulletin Editor | 1 | $0 | $0 | View return |
| 2017 | South Texas Geological Society | 990EZ | Bulletin Editor | 1 | $0 | $0 | View return |
| 2016 | Iowa Natural Heritage Foundation | 990 | President | 40 | $169,000 | $0 | View return |
| 2016 | Boys and Girls Club of Harford County Maryland Inc. | 990 | Executive Director - Immediate Past | 40 | $94,000 | $0 | View return |
| 2016 | South Texas Geological Society | 990EZ | Bulletin Editor | 1 | $0 | $0 | View return |
| 2015 | Iowa Natural Heritage Foundation | 990 | President | 40 | $140,000 | $0 | View return |
| 2015 | Make a Wish Foundation of Greater Bay Area | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | South Texas Geological Society | 990EZ | Bulletin Editor | 1 | $0 | $0 | View return |
| 2014 | Iowa Natural Heritage Foundation | 990 | President | 40 | $122,792 | $0 | View return |
| 2014 | Iowa Natural Heritage Foundation | 990 | President | 40 | $122,792 | $0 | View return |
| 2014 | Make a Wish Foundation of Greater Bay Area | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Iowa Natural Heritage Foundation | 990 | President | 40 | $76,120 | $0 | View return |
| 2013 | Make a Wish Foundation of Greater Bay Area | 990 | Board Member | 1 | $0 | $0 | View return |