| 2024 | Knights of Columbus | 990EZ | Advocate | 6 | $0 | $0 | View return |
| 2024 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2023 | The Foundation of the Greater New Haven Chamber of Commerce Inc | 990 | Immediate Past Chairman | 1 | $0 | $0 | View return |
| 2023 | The Greater New Haven Chamber of Commerce Inc | 990 | Immediate Past Chairman | 1 | $0 | $0 | View return |
| 2023 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2023 | Connecticut Council for Education Reform Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2022 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2022 | The Greater New Haven Chamber of Commerce Inc | 990 | Immediate Past Chairman | 1 | $0 | $0 | View return |
| 2022 | The Foundation of the Greater New Haven Chamber of Commerce Inc | 990 | Immediate Past Chairman | 1 | $0 | $0 | View return |
| 2022 | Connecticut Council for Education Reform Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2021 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2021 | The Greater New Haven Chamber of Commerce Inc | 990 | Immediate Past Chairman | 1 | $0 | $0 | View return |
| 2021 | The Foundation of the Greater New Haven Chamber of Commerce Inc | 990 | Immediate Past Chairman | 1 | $0 | $0 | View return |
| 2021 | Connecticut Council for Education Reform Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2021 | The Lester and Esther Klaus Family Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2020 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2020 | Dedham Youth Hockey Inc. | 990EZ | President | 2 | $0 | - | View return |
| 2020 | The Foundation of the Greater New Haven Chamber of Commerce Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2020 | The Greater New Haven Chamber of Commerce Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2020 | Connecticut Council for Education Reform Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2020 | Bridgeport Regional Business Council | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | The Lester and Esther Klaus Family Foundation | 990PF | Vice President | 1 | $0 | - | View return |
| 2019 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2019 | The Foundation of the Greater New Haven Chamber of Commerce Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | The Greater New Haven Chamber of Commerce Inc | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | Bridgeport Regional Business Council | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Dedham Youth Hockey Inc. | 990EZ | Treasurer | 2 | $0 | - | View return |
| 2019 | The Lester and Esther Klaus Family Foundation | 990PF | Vice President | 0 | $0 | - | View return |
| 2018 | National Council on Alcoholism and Drug Dependence Orange County Calif | 990 | Secretary | 2 | $0 | $0 | View return |
| 2018 | Connecticut Council for Education Reform Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2018 | Bridgeport Regional Business Council | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Connecticut Council for Education Reform Inc | 990 | Director | 0.5 | $0 | $0 | View return |
| 2017 | Bridgeport Regional Business Council | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2016 | The Foundation of the Greater New Haven Chamber of Commerce Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | The Greater New Haven Chamber of Commerce Inc | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2016 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2015 | Bridgeport Public Education Fund Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Bridgeport Regional Business Council | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2014 | Bridgeport Public Education Fund Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Bridgeport Public Education Fund Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Bridgeport Regional Business Council | 990 | Board Member | 0 | $0 | $0 | View return |
| 2014 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2013 | Bridgeport Regional Business Council | 990 | Board Member | 0 | $0 | $0 | View return |
| 2013 | Bridgeport Public Education Fund Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |
| 2012 | The Lester and Esther Klaus Family Foundation | 990PF | V.P. | 1 | $0 | $0 | View return |