| 2025 | Williamsburg Iowa Historical Society | 990PF | President | 1 | $0 | $0 | View return |
| 2024 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2024 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2023 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2023 | Williamsburg Retirement Community Inc. | 990 | Board Vicechair | 1 | $0 | $0 | View return |
| 2022 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2022 | Williamsburg Retirement Community Inc. | 990 | Board Vicechair | 1 | $0 | $0 | View return |
| 2021 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2021 | Williamsburg Retirement Community Inc. | 990 | Board Vicechair | 1 | $0 | $0 | View return |
| 2020 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2020 | San Luis Obispo Vocal Arts Ensemble | 990EZ | Treasurer | 5 | $0 | - | View return |
| 2020 | Williamsburg Retirement Community Inc. | 990 | Board Vicechair | 1 | $0 | $0 | View return |
| 2019 | San Luis Obispo Vocal Arts Ensemble | 990EZ | Treasurer | 5 | $0 | - | View return |
| 2019 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2019 | Williamsburg Retirement Community Inc. | 990 | Board Vicechair | 1 | $0 | $0 | View return |
| 2018 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2018 | Williamsburg Retirement Community Inc. | 990 | Board Vicechair | 1 | $0 | $0 | View return |
| 2018 | San Luis Obispo Vocal Arts Ensemble | 990EZ | Treasurer | 5 | $0 | - | View return |
| 2017 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2017 | San Luis Obispo Vocal Arts Ensemble | 990EZ | Treasurer | 5 | $0 | - | View return |
| 2017 | Williamsburg Retirement Community Inc. | 990 | Board Vice Chai | 1 | $0 | $0 | View return |
| 2016 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2016 | Williamsburg Retirement Community Inc. | 990 | Board Vice Chai | 1 | $0 | $0 | View return |
| 2016 | San Luis Obispo Vocal Arts Ensemble | 990EZ | Treasurer | 5 | $0 | - | View return |
| 2015 | Williamsburg Retirement Community Inc. | 990 | Board Vice Chai | 1 | $0 | $0 | View return |
| 2015 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2014 | Williamsburg Retirement Community Inc. | 990 | Board Vice Chai | 1 | $0 | $0 | View return |
| 2014 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2013 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |
| 2013 | Williamsburg Retirement Community Inc. | 990 | Board Vice Chai | 1 | $0 | $0 | View return |
| 2012 | Roland & Ruby Holden Foundation C/O Kristen J Wilcox | 990PF | Director | 0.25 | $0 | $0 | View return |