| 2024 | The Greenwich Land Trust Inc. | 990 | Director | 0.25 | $0 | $0 | View return |
| 2023 | The Field Club of Greenwich | 990 | Vice President | 3 | $0 | $0 | View return |
| 2023 | The Greenwich Land Trust Inc. | 990 | Director | 0.25 | $0 | $0 | View return |
| 2022 | The Greenwich Land Trust Inc. | 990 | Director | 0.25 | $0 | $0 | View return |
| 2022 | Golf Club of Purchase Inc | 990 | Board Member | 2 | $0 | $0 | View return |
| 2021 | The Greenwich Land Trust Inc. | 990 | Immediate Past President | 0.25 | $0 | $0 | View return |
| 2021 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2020 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2020 | The Greenwich Land Trust Inc. | 990 | Immediate Past President | 0.25 | $0 | $0 | View return |
| 2019 | The Field Club of Greenwich | 990 | Vice President | 3 | $0 | $0 | View return |
| 2019 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2019 | The Greenwich Land Trust Inc. | 990 | President | 3 | $0 | $0 | View return |
| 2018 | The Field Club of Greenwich | 990 | Vice President | 3 | $0 | $0 | View return |
| 2018 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2018 | The Greenwich Land Trust Inc. | 990 | President | 3 | $0 | $0 | View return |
| 2017 | The Greenwich Land Trust Inc. | 990 | President | 3 | $0 | $0 | View return |
| 2017 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2016 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2016 | The Greenwich Land Trust Inc. | 990 | President | 2 | $0 | $0 | View return |
| 2015 | The Greenwich Land Trust Inc. | 990 | Vice President | 5 | $0 | $0 | View return |
| 2015 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2014 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2014 | The Greenwich Land Trust Inc. | 990 | Vice President | 5 | $0 | $0 | View return |
| 2013 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2012 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2011 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2010 | Bostock Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |