| 2024 | Linsone Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2024 | Propp Foundation Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2024 | Morris & Anna Propp Sons Fund Inc. | 990PF | Director | 1 | $0 | $0 | View return |
| 2023 | Propp Foundation Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2023 | Linsone Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2023 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2022 | Linsone Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2022 | Propp Foundation Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2022 | Morris & Anna Propp Sons Fund Inc. | 990PF | Director | 1 | $0 | $0 | View return |
| 2022 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2022 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2021 | Linsone Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2021 | Morris & Anna Propp Sons Fund Inc. | 990PF | Director | 1 | $0 | $0 | View return |
| 2021 | Propp Foundation Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2021 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2021 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2020 | Morris & Anna Propp Sons Fund Inc. | 990PF | Director | 1 | $0 | $0 | View return |
| 2020 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2020 | Propp Foundation Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2020 | Linsone Inc. | 990PF | Director | 0.5 | $0 | $0 | View return |
| 2020 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2019 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2019 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2018 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2018 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2017 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2017 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2016 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2016 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2015 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2014 | Mortimer J Propp Legacy for Orthodox Hebrew Day Schools Inc. | 990PF | Co-President And Secretary | 1 | $0 | $0 | View return |
| 2014 | Hershey'S MILL Community TV | 990 | Director | 10 | $0 | $0 | View return |
| 2014 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2013 | J W Heller Foundation | 990PF | Co-President & Secretary | 5 | $0 | $0 | View return |
| 2012 | J W Heller Foundation | 990PF | Trustee | 5 | $0 | $0 | View return |