| 2025 | Scarborough Land Conservation Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2024 | Scarborough Land Conservation Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2024 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Officer, Secretary, Director | 1 | $0 | $0 | View return |
| 2024 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2023 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Officer, Secretary, Director | 1 | $0 | $0 | View return |
| 2023 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2022 | Scarborough Land Conservation Trust | 990 | Board Member | 3 | $0 | $0 | View return |
| 2022 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2022 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Officer, Secretary, Director | 1 | $0 | $0 | View return |
| 2021 | Scarborough Land Conservation Trust | 990 | Board Member | 4 | $0 | $0 | View return |
| 2021 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Officer, Secretary, Director | 1 | $0 | $0 | View return |
| 2021 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2020 | Scarborough Land Conservation Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2020 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Officer, Secretary, Director | 1 | $0 | $0 | View return |
| 2019 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Officer, Secretary, Director | 1 | $0 | $0 | View return |
| 2019 | Scarborough Land Conservation Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2019 | United States Court Tennis Association Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2018 | Scarborough Land Conservation Trust | 990 | Board Member | 10 | $0 | $0 | View return |
| 2018 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Vice Pres, Secretary, Dire | 1 | $0 | $0 | View return |
| 2018 | United States Court Tennis Association Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2017 | Scarborough Land Conservation Trust | 990 | Board Member | 10 | $0 | $0 | View return |
| 2017 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Vice Pres, Secretary, Director | 0 | $0 | $0 | View return |
| 2017 | United States Court Tennis Association Inc | 990EZ | Director | 2 | $0 | - | View return |
| 2016 | Southern Maine Conservation Collaborative | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2016 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Vice Pres, Secretary, Director | 0 | $0 | $0 | View return |
| 2016 | Scarborough Land Conservation Trust | 990 | Board Member | 10 | $0 | $0 | View return |
| 2016 | United States Court Tennis Association Inc | 990EZ | Director | 2 | $0 | - | View return |
| 2015 | Scarborough Land Conservation Trust | 990 | Board Member | 10 | $0 | $0 | View return |
| 2015 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2015 | Sand Dollar Foundation C/O Margo Wintersteen | 990PF | Vice Pres, Secretary, Director | 0 | $0 | $0 | View return |
| 2015 | Southern Maine Conservation Collaborative | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2015 | United States Court Tennis Association Inc | 990EZ | President | 3 | $0 | - | View return |
| 2014 | Scarborough Land Conservation Trust | 990 | Board Member | 10 | $0 | $0 | View return |
| 2014 | Southern Maine Conservation Collaborative | 990EZ | Vice President | 1 | $0 | $0 | View return |
| 2014 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2014 | Maine Island Trail Association | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | United States Court Tennis Association Inc | 990EZ | President | 3 | $0 | - | View return |
| 2013 | Southern Maine Conservation Collaborative | 990EZ | Vice President | 2.5 | $0 | $0 | View return |
| 2013 | Prouts Neck Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2013 | United States Court Tennis Association Inc | 990EZ | President | 3 | $0 | - | View return |