| 2023 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2022 | GPS Education Partners Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2021 | GPS Education Partners Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2021 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2020 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2019 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2019 | Wisconsin Lutheran College Inc | 990 | Regent Thru Sep 2019 | 0.1 | $0 | $0 | View return |
| 2018 | Wisconsin Lutheran College Inc | 990 | Regent | 0.9 | $0 | $0 | View return |
| 2018 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2017 | GPS Education Partners Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | Wisconsin Lutheran College Inc | 990 | Regent | 0.9 | $0 | $0 | View return |
| 2017 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2016 | GPS Education Partners Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2016 | Wisconsin Lutheran College Inc | 990 | Regent | 0.9 | $0 | $0 | View return |
| 2015 | GPS Education Partners Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2015 | Wisconsin Lutheran College Inc | 990 | Regent | 0.9 | $0 | $0 | View return |
| 2014 | GPS Education Partners Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2014 | Wisconsin Lutheran College Inc | 990 | Vice-Chairman | 0.9 | $0 | $0 | View return |
| 2013 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2013 | Wisconsin Lutheran College Inc | 990 | Vice-Chairman | 1.3 | $0 | $0 | View return |
| 2012 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2011 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2010 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |
| 2009 | Treffert Family Foundation Inc. | 990PF | President/Secretary | 0.5 | $0 | $0 | View return |