| 2024 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,305 | - | View return |
| 2024 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2024 | Kdl Foundation Ltd. | 990PF | Vice President | 0.25 | $0 | $0 | View return |
| 2023 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,185 | - | View return |
| 2023 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2023 | Kdl Foundation Ltd. | 990PF | Vice President | 0.25 | $0 | $0 | View return |
| 2022 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,302 | - | View return |
| 2022 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2022 | Kdl Foundation Ltd. | 990PF | Vice President | 0.25 | $0 | $0 | View return |
| 2021 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,326 | - | View return |
| 2021 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2020 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,095 | - | View return |
| 2020 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2019 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,070 | - | View return |
| 2019 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2018 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,108 | - | View return |
| 2018 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,108 | - | View return |
| 2018 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2017 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $957 | - | View return |
| 2017 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2016 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $866 | - | View return |
| 2016 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2015 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $910 | - | View return |
| 2015 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2014 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2013 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $848 | - | View return |
| 2013 | Cambridge Charitable Foundation | 990 | President & Trustee | 2 | $0 | $0 | View return |
| 2012 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $1,367 | - | View return |
| 2011 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $0 | - | View return |
| 2010 | Thelma Masten Charitable Trust | 990PF | Co-Trustee | 0 | $463 | - | View return |