| 2024 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasur | 5 | $0 | $0 | View return |
| 2024 | Mapping Boston Foundation Inc C/O Beacon Capital Partners | 990PF | Clerk | 2 | $0 | $0 | View return |
| 2024 | Walk to the Sea Inc C/O Beacon Capital Partners | 990PF | Clerk | 5 | $0 | $0 | View return |
| 2024 | Combined Jewish Philanthropies of Greater Boston Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasur | 5 | $0 | $0 | View return |
| 2023 | Mapping Boston Foundation Inc C/O Beacon Capital Partners | 990PF | Clerk | 2 | $0 | $0 | View return |
| 2023 | Walk to the Sea Inc C/O Beacon Capital Partners | 990PF | Clerk (As Of 3/24) | 5 | $0 | $0 | View return |
| 2023 | Combined Jewish Philanthropies of Greater Boston Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasur | 5 | $0 | $0 | View return |
| 2022 | Mapping Boston Foundation Inc C/O Beacon Capital Partners | 990PF | Clerk | 2 | $0 | $0 | View return |
| 2022 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Mapping Boston Foundation Inc C/O Beacon Capital Partners | 990PF | Clerk | 2 | $0 | $0 | View return |
| 2021 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasur | 5 | $0 | $0 | View return |
| 2021 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasur | 5 | $0 | $0 | View return |
| 2020 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasur | 5 | $0 | $0 | View return |
| 2018 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasurer | 5 | $0 | $0 | View return |
| 2017 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Ideas in Action Inc. | 990EZ | Director | 1 | $0 | $0 | View return |
| 2016 | Mark S & Donna Leventhal Family Foundation Inc | 990PF | President/Director/Treasurer | 5 | $0 | $0 | View return |
| 2016 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Ideas in Action Inc. | 990EZ | Director | 1 | $0 | $0 | View return |
| 2015 | Facing History and Ourselves National Foundation Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Jumpstart Labs Inc Fka Jewishjumpstart DBA Jewish Jumpstart Jslabs | 990 | Director | 0 | $0 | $0 | View return |
| 2014 | Ideas in Action Inc. | 990EZ | Director | 1 | $0 | $0 | View return |
| 2014 | Jumpstart Labs Inc Fka Jewishjumpstart DBA Jewish Jumpstart Jslabs | 990 | Director | 0 | $0 | $0 | View return |
| 2013 | Ideas in Action Inc. | 990EZ | Director | 1 | $0 | $0 | View return |
| 2013 | Jumpstart Labs Inc Fka Jewishjumpstart DBA Jewish Jumpstart Jslabs | 990 | Director | 0 | $0 | $0 | View return |
