| 2025 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2024 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2024 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2024 | National Society to Prevent Blindnessohio Affiliate | 990 | Board Member | 2 | $0 | $0 | View return |
| 2023 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2023 | Cape Blanco Heritage Society | 990EZ | Secretary | 4 | $0 | - | View return |
| 2023 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2023 | National Society to Prevent Blindnessohio Affiliate | 990 | Board Member | 2 | $0 | $0 | View return |
| 2023 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2022 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2022 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2021 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2021 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2020 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2020 | Wellfleet Chamber of Commerce Scholarship Fund Inc | 990PF | Director | 1 | $0 | $0 | View return |
| 2020 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Cedar Rapids Symphony Orchestra | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2019 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2019 | Cedar Rapids Symphony Orchestra | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2018 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2018 | Cedar Rapids Symphony Orchestra | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2017 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | League of Women Voters of Orange | 990EZ | Board Member | 5 | $0 | - | View return |
| 2016 | Provincetown Chamber of Commerce Inc | 990 | Treasurer | 5 | $0 | $0 | View return |
| 2016 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2016 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | Seashore Point - Deaconess Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Seashore Point - Deaconess Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Deacon John Grave Foundation Inc | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | League of Women Voters of Orange | 990EZ | Board Member | 5 | $0 | - | View return |
| 2015 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2015 | Provincetown Chamber of Commerce Inc | 990 | Treasurer | 5 | - | - | View return |
| 2015 | Cedar Rapids Symphony Orchestra | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Centreville High School Choral Boosters Inc | 990EZ | Secretary | 0 | $0 | - | View return |
| 2014 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2014 | League of Women Voters of Orange | 990EZ | Board Member | 5 | $0 | - | View return |
| 2014 | Provincetown Chamber of Commerce Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | John & Barbara Knapp Charitable | 990PF | President | 1 | $0 | $0 | View return |
| 2013 | Provincetown Chamber of Commerce Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | League of Women Voters of Orange | 990EZ | Board Member | 5 | $0 | - | View return |
| 2013 | Mount Mercy University | 990 | Trustee | 1 | $0 | $0 | View return |