| 2025 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | $0 | View return |
| 2024 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | $0 | View return |
| 2023 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | $0 | View return |
| 2023 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $15,000 | $0 | View return |
| 2022 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | $0 | View return |
| 2022 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $15,000 | $0 | View return |
| 2021 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | $0 | View return |
| 2021 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $0 | $0 | View return |
| 2020 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2020 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $15,000 | $0 | View return |
| 2019 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2019 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $15,000 | $0 | View return |
| 2018 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2018 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $7,500 | $0 | View return |
| 2017 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2017 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $7,500 | $0 | View return |
| 2016 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2016 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $7,500 | $0 | View return |
| 2015 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2015 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $7,500 | $0 | View return |
| 2014 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $10,000 | - | View return |
| 2014 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $10,000 | $0 | View return |
| 2013 | Dippell Family Foundation Inc. | 990PF | Vice President | 5 | $15,000 | - | View return |
| 2013 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $10,000 | $0 | View return |
| 2012 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $15,000 | $0 | View return |
| 2011 | The Harold & Ruth Allen Foundation | 990PF | Trustee | 10 | $15,000 | $0 | View return |