| 2025 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2024 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2023 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2022 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2021 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2020 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2019 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2018 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2018 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2017 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2016 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2015 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |
| 2014 | Bruce E and Debra K Grewcock Foundation | 990PF | Vice President, Secretary | 1 | $0 | $0 | View return |