| 2024 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $0 | - | View return |
| 2023 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $3,250 | - | View return |
| 2022 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $5,500 | - | View return |
| 2021 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $7,000 | - | View return |
| 2020 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $7,000 | - | View return |
| 2020 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2019 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $5,500 | - | View return |
| 2019 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2019 | Manhattan Graphics Center Inc | 990 | Board Member | 5 | $0 | $0 | View return |
| 2018 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $7,000 | - | View return |
| 2018 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2018 | Manhattan Graphics Center Inc | 990 | Board Member | 5 | $0 | $0 | View return |
| 2017 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $4,750 | - | View return |
| 2017 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2017 | Manhattan Graphics Center Inc | 990 | Board Member | 5 | $0 | $0 | View return |
| 2016 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $5,500 | - | View return |
| 2016 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2016 | Manhattan Graphics Center Inc | 990 | Board Member | 6 | $0 | $0 | View return |
| 2016 | The Crefeld School | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $5,500 | - | View return |
| 2015 | The Crefeld School | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2015 | Manhattan Graphics Center Inc | 990 | Board Member | 6 | $0 | $0 | View return |
| 2014 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $6,250 | - | View return |
| 2014 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2014 | The Crefeld School | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Manhattan Graphics Center Inc | 990 | Board Member | 7 | $0 | $0 | View return |
| 2013 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $4,750 | - | View return |
| 2013 | The Crefeld School | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2013 | Philadelphia Jewish Archives Center | 990EZ | Vice President | 3 | $0 | - | View return |
| 2013 | Manhattan Graphics Center Inc | 990 | Board Member | 7 | $0 | $0 | View return |
| 2012 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $5,500 | - | View return |
| 2012 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2011 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $6,250 | - | View return |
| 2011 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |
| 2010 | The Greenfield Foundation Inc Co Harp-Weaver LLC | 990PF | Trustee | 2 | $4,750 | - | View return |
| 2010 | William and Joan Rockower Greenfield | 990PF | Trustee | 1 | $0 | - | View return |