| 2024 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2024 | The Wildflower Foundation Inc | 990PF | Director | 2 | $0 | $0 | View return |
| 2023 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2023 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2022 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2022 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2021 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2021 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2020 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2020 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2019 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2019 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2018 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2018 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2017 | The Wildflower Foundation Inc | 990PF | President | 2 | $0 | $0 | View return |
| 2017 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2016 | The Wildflower Foundation Inc | 990PF | President | 2.65 | $0 | $0 | View return |
| 2016 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2015 | The Wildflower Foundation Inc | 990PF | President | 1.5 | $0 | $0 | View return |
| 2015 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2014 | The Wildflower Foundation Inc | 990PF | Pres/Treas/D | 1.5 | $0 | $0 | View return |
| 2014 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2013 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | $0 | View return |
| 2013 | The Wildflower Foundation Inc | 990PF | Pres/Treas/D | 1.5 | $0 | $0 | View return |
| 2012 | The Wildflower Foundation Inc | 990PF | Pres/Treas/D | 2 | $0 | $0 | View return |
| 2012 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | - | View return |
| 2011 | The Wildflower Foundation Inc | 990PF | Pres/Treas/D | 2 | $0 | $0 | View return |
| 2011 | Barbara a Stiefel Foundation Inc. | 990PF | Vice President/Director | 1.25 | $0 | - | View return |
| 2010 | The Wildflower Foundation Inc | 990PF | Pres/Treas/D | 3.5 | $0 | $0 | View return |