| 2023 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2022 | Friends of Greystone | 990 | Board Member | 2 | $0 | $0 | View return |
| 2022 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2021 | Griffith Observatory Foundation | 990 | Board Member Thru 12/2021 | 1 | $0 | $0 | View return |
| 2021 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2021 | Friends of Greystone | 990 | Board Member | 2 | $0 | $0 | View return |
| 2021 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2021 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member (Thru 12/2021) | 1 | $0 | $0 | View return |
| 2020 | Friends of Greystone | 990 | Board Member | 2 | $0 | $0 | View return |
| 2020 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2020 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2019 | Friends of Greystone | 990 | Board Member | 2 | $0 | $0 | View return |
| 2019 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2018 | Friends of Greystone | 990 | Board Member | 2 | $0 | $0 | View return |
| 2018 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2018 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2018 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2017 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2017 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2017 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2016 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2016 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2015 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2015 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Young Musicians Foundation | 990 | Treasurer | 10 | $0 | $0 | View return |
| 2015 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Virginia Friedhofer Charitable Trust | 990PF | Trustee | 20 | $157,147 | - | View return |
| 2014 | Unknown Organization | 990PF | Trustee | 5 | $76,009 | - | View return |
| 2014 | Schlum Charitable Trust | 990PF | Trustee | 5 | $56,808 | - | View return |
| 2014 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2014 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Virginia Friedhofer Charitable Trust | 990PF | Trustee | 20 | $113,680 | - | View return |
| 2013 | Unknown Organization | 990PF | Trustee | 5 | $54,703 | - | View return |
| 2013 | Schlum Charitable Trust | 990PF | Trustee | 5 | $41,325 | - | View return |
| 2013 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2013 | Griffith Observatory Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | American Society for Technion - Israel Institute for Technology Inc | 990 | Board Member | 1 | - | - | View return |
| 2012 | Virginia Friedhofer Charitable Trust | 990PF | Trustee | 20 | $103,407 | - | View return |
| 2012 | Schlum Charitable Trust | 990PF | Trustee | 5 | $39,723 | - | View return |
| 2012 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2011 | Schlum Charitable Trust | 990PF | Trustee | 5 | $36,637 | - | View return |
| 2011 | The Seidel Family Foundation | 990PF | Chairman | 0 | $0 | - | View return |
| 2010 | Schlum Charitable Trust | 990PF | Trustee | 5 | $34,154 | - | View return |