| 2025 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $20,000 | - | View return |
| 2024 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $20,000 | - | View return |
| 2023 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $20,000 | - | View return |
| 2023 | Mote Marine Laboratory Inc | 990 | Chairman Emeritus To May | 5 | $0 | $0 | View return |
| 2022 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $20,000 | - | View return |
| 2022 | Mote Marine Laboratory Inc | 990 | Chairman Emeritus Thru May 23 | 5 | $0 | $0 | View return |
| 2021 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2021 | Mote Marine Laboratory Inc | 990 | Chairman Emeritus | 5 | $0 | $0 | View return |
| 2020 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2020 | Mote Marine Laboratory Inc | 990 | Chairman Emeritus | 5 | $0 | $0 | View return |
| 2020 | Mote Marine Foundation Inc. | 990 | Chairman | 0.25 | $0 | $0 | View return |
| 2019 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2019 | Mote Marine Foundation Inc. | 990 | Chairman | 0.25 | $0 | $0 | View return |
| 2019 | Mote Marine Laboratory Inc | 990 | Chairman Emeritus | 5 | $0 | $0 | View return |
| 2018 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2018 | Mote Marine Laboratory Inc | 990 | Chairman Emeritus | 5 | $0 | $0 | View return |
| 2018 | Mote Marine Foundation Inc. | 990 | Chairman | 0.25 | $0 | $0 | View return |
| 2017 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2017 | Mote Marine Foundation Inc. | 990 | Vice Chairman | 0.25 | $0 | $0 | View return |
| 2017 | Mote Marine Laboratory Inc | 990 | Immed. Past Chairman | 5 | $0 | $0 | View return |
| 2016 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2016 | Mote Marine Foundation Inc. | 990 | Vice Chairman | 0.25 | $0 | $0 | View return |
| 2016 | Mote Marine Laboratory Inc | 990 | Past Chairman | 5 | $0 | $0 | View return |
| 2015 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2015 | Mote Marine Laboratory Inc | 990 | Chairman | 5 | $0 | $0 | View return |
| 2014 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $16,000 | - | View return |
| 2014 | Mote Marine Laboratory Inc | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2013 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $12,000 | - | View return |
| 2013 | Mote Marine Laboratory Inc | 990 | Vice Chairman | 5 | $0 | $0 | View return |
| 2012 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $12,000 | - | View return |
| 2011 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $12,000 | - | View return |
| 2010 | Frank E Duckwall Foundation | 990PF | Trustee | 1 | $12,000 | - | View return |