| 2024 | Serenity Farm Equine Sanctuary | 990 | Director | 8 | $0 | $0 | View return |
| 2024 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2024 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Chairperson | 1 | $0 | - | View return |
| 2023 | Serenity Farm Equine Sanctuary | 990 | Director | 15 | $0 | $0 | View return |
| 2023 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2023 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2023 | John and Mary R Markle Foundation | 990PF | Director | 3 | $0 | $0 | View return |
| 2023 | Rfefl Inc | 990 | Vice Chairperson | 0.5 | $0 | $0 | View return |
| 2023 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Serenity Farm Equine Sanctuary | 990 | Director | 20 | $0 | $0 | View return |
| 2022 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2022 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2022 | John and Mary R Markle Foundation | 990PF | Director | 3 | $0 | $0 | View return |
| 2022 | Rfefl Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2021 | Serenity Farm Equine Sanctuary | 990 | Director | 10 | $0 | $0 | View return |
| 2021 | The 19Th News | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2021 | John and Mary R Markle Foundation | 990PF | Director | 3 | $0 | $0 | View return |
| 2021 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Belgian American Educational Foundation Inc. | 990 | Director | 0.3 | $0 | $0 | View return |
| 2020 | The 19Th News | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2020 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2020 | John and Mary R Markle Foundation | 990PF | Director | 3 | $0 | $0 | View return |
| 2020 | Belgian American Educational Foundation Inc. | 990 | Director | 0.3 | $0 | $0 | View return |
| 2020 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2019 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2019 | Belgian American Educational Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2019 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2018 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2018 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Belgian American Educational Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2017 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2017 | Belgian American Educational Foundation Inc. | 990 | Director | 0.25 | $0 | $0 | View return |
| 2017 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Belgian American Educational Foundation Inc. | 990 | Director | 0.25 | $0 | $0 | View return |
| 2016 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2016 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Belgian American Educational Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2015 | American Unity Fund Inc | 990 | Director, President | 10 | $0 | $0 | View return |
| 2015 | Belgian American Educational Foundation Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2014 | Hoover Presidential Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Belgian American Educational Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2013 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2013 | Belgian American Educational Foundation Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2012 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |
| 2011 | The Herbert Hoover Foundation Inc % Darrel Morf Simmons Perrine | 990PF | Trustee | 1 | $0 | - | View return |