| 2024 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2024 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2024 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2023 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2023 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2023 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2022 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2021 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2021 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2020 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2020 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2020 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2019 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2019 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2019 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2018 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2018 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2017 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2017 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2017 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2016 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2016 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2016 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2015 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2015 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2015 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2014 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2014 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2013 | The Stannard & Dorothy Dunn Charitable Trust | 990PF | Trustee | 2 | $0 | $0 | View return |
| 2013 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2013 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2012 | Allan B Roby and Frances M Roby Charitable Trust | 990PF | Trustee | 0 | $0 | $0 | View return |
| 2012 | Bear Hill Conservancy Trust | 990PF | Trustee | 1 | $0 | $0 | View return |