| 2025 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2024 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2023 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2022 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2020 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2019 | Clark Family Foundation Inc. | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | Western Landowners Alliance | 990 | Director | 0.5 | $0 | $0 | View return |
| 2018 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2018 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2017 | Western Landowners Alliance | 990 | Director | 0.5 | $0 | $0 | View return |
| 2017 | Clark Family Foundation Inc. | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2016 | Western Landowners Alliance | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | Clark Family Foundation Inc. | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2015 | Clark Family Foundation Inc. | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2015 | Western Landowners Alliance | 990 | Secretary | 1 | $0 | $0 | View return |
| 2015 | Cuenca Los Ojos Foundation Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2014 | Western Landowners Alliance | 990 | Secretary | 4 | $0 | $0 | View return |
| 2014 | Clark Family Foundation Inc. | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2013 | Clark Family Foundation Inc. | 990PF | Trustee | 0.83 | $0 | $0 | View return |
| 2012 | Clark Family Foundation Inc. | 990PF | Trustee | 0.77 | $0 | $0 | View return |
| 2012 | Cuenca Los Ojos Foundation Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2011 | Clark Family Foundation Inc. | 990PF | Trustee | 1.1 | $0 | $0 | View return |
| 2011 | Cuenca Los Ojos Foundation Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2010 | Cuenca Los Ojos Foundation Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2010 | Clark Family Foundation Inc. | 990PF | Trustee | 1.35 | $0 | $0 | View return |