| 2025 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Director | 15 | $0 | $0 | View return |
| 2024 | Margaret M and Robert D Walter Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2024 | Veterans of Foreign Wars Home Association of Levittown | 990 | President | 10 | $0 | $0 | View return |
| 2024 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Director | 15 | $0 | $0 | View return |
| 2024 | Charles Stevens Dilbeck Architecture Conservancy | 990PF | Board | 0 | $0 | - | View return |
| 2024 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2023 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2023 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Director | 15 | $0 | $0 | View return |
| 2023 | Veterans of Foreign Wars Home Association of Levittown | 990 | President | 30 | $0 | $0 | View return |
| 2023 | The Rivers School Corporation | 990 | Officer | 1.8 | $0 | $0 | View return |
| 2023 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | The Philbrook Museum of Art Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2022 | The Philbrook Museum of Art Inc | 990 | Director | 0.25 | $0 | $0 | View return |
| 2022 | The Rivers School Corporation | 990 | Trustee | 1.8 | $0 | $0 | View return |
| 2022 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | President | 35 | $0 | $0 | View return |
| 2021 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2021 | The Philbrook Museum of Art Inc | 990 | Director | 0.25 | $0 | $0 | View return |
| 2021 | The Rivers School Corporation | 990 | Trustee | 1.8 | $0 | $0 | View return |
| 2021 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | President | 35 | $0 | $0 | View return |
| 2020 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2020 | The Philbrook Museum of Art Inc | 990 | Director | 0.25 | $0 | $0 | View return |
| 2020 | The Rivers School Corporation | 990 | Trustee | 0.8 | $0 | $0 | View return |
| 2020 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | President | 35 | $0 | $0 | View return |
| 2019 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2019 | The Rivers School Corporation | 990 | Trustee | 0.8 | $0 | $0 | View return |
| 2019 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | President | 35 | $0 | $0 | View return |
| 2018 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2018 | The Rivers School Corporation | 990 | Trustee | 0.8 | $0 | $0 | View return |
| 2018 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | President | 35 | $0 | $0 | View return |
| 2017 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Vice President | 20 | $0 | $0 | View return |
| 2017 | The American Society for Cell Biology | 990 | Past President | 4 | $0 | $0 | View return |
| 2017 | Brady Craft Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | The American Society for Cell Biology | 990 | President | 4 | $0 | $0 | View return |
| 2016 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Vice President | 20 | $0 | $0 | View return |
| 2016 | Brady Craft Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2016 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2015 | Brady Craft Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The American Society for Cell Biology | 990 | President Elect 2014-2015 | 4 | $0 | $0 | View return |
| 2015 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Vice President | 20 | $0 | $0 | View return |
| 2015 | Science Communication Lab Inc. | 990 | Director | 0.1 | $0 | $0 | View return |
| 2015 | Science Communication Lab Inc. | 990 | Director | 0.1 | $0 | $0 | View return |
| 2015 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Brady Craft Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2014 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Vice President | 10 | $0 | $0 | View return |
| 2014 | Tenacre Country Day School Corporation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | The 11Th Armored Cavalrys Veterans of Vietnam and Cambodia Inc. | 990 | Vice President | 10 | $0 | $0 | View return |
| 2013 | Margaret and Robert Walter Foundation | 990 | President | 1 | $0 | $0 | View return |