| 2025 | Marine Renewable Energy Collaborative of New England | 990 | Director | 0 | $0 | $0 | View return |
| 2024 | Boston Police Relief Association | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | North American Versatile Hunting Dog Association | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | National Slag Association | 990 | Director | 0 | $0 | $0 | View return |
| 2024 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2024 | National Ornamental & Miscellaneous Metals Association | 990 | Fabricator Director | 1 | $0 | $0 | View return |
| 2023 | Thomas Jefferson University | 990 | Evp, CSO & CAO | 55 | $1,227,107 | $0 | View return |
| 2023 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $48,100 | $0 | View return |
| 2023 | Boston Police Relief Association | 990 | Director | 1 | $200 | $0 | View return |
| 2023 | National Slag Association | 990 | Director | 0 | $0 | $0 | View return |
| 2023 | Westchester & Putnam Counties Steamfitter Industry Promotion Fun | 990 | Trustee | 4 | $0 | $0 | View return |
| 2023 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2023 | North American Versatile Hunting Dog Association | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Former Employer Trustee | 1 | $0 | $0 | View return |
| 2023 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Former Employer Trustee | 1 | $0 | $0 | View return |
| 2023 | National Ornamental & Miscellaneous Metals Association | 990 | Fabricator Director | 2 | $0 | $0 | View return |
| 2023 | Riverside Community Care Inc. | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2022 | Thomas Jefferson University | 990 | Evp, CSO & CAO | 55 | $328,884 | $0 | View return |
| 2022 | Center for Ecotechnology Inc. | 990 | Bus App Manager | 40 | $120,461 | $0 | View return |
| 2022 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $46,166 | $0 | View return |
| 2022 | Boston Police Relief Association | 990 | Director | 1 | $400 | $0 | View return |
| 2022 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | National Slag Association | 990 | Director | 0 | $0 | $0 | View return |
| 2022 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2022 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2022 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Employer Trustee | 1 | $0 | $0 | View return |
| 2022 | Riverside Community Care Inc. | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2022 | Plumbers and Steamfitters Local No 21 Education and Training Fund | 990 | Employer Trustee | 0.5 | $0 | $0 | View return |
| 2021 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $44,333 | $0 | View return |
| 2021 | Boston Police Relief Association | 990 | Director | 1 | $0 | $960 | View return |
| 2021 | Darlington Football Boosters Inc. | 990EZ | Vice President | 2 | $0 | $0 | View return |
| 2021 | National Slag Association | 990 | Director | 0 | $0 | $0 | View return |
| 2021 | New York State Auctioneers Association Inc | 990EZ | Director | 1 | $0 | $0 | View return |
| 2021 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2021 | Plumbers and Steamfitters Local No 21 Education and Training Fund | 990 | Employer Trustee | 0.5 | $0 | $0 | View return |
| 2021 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2021 | Riverside Community Care Inc. | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2021 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Employer Trustee | 1 | $0 | $0 | View return |
| 2020 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $42,000 | $0 | View return |
| 2020 | New York State Auctioneers Association Inc | 990EZ | Director | 1 | $0 | $0 | View return |
| 2020 | Florida Energy Pipeline Association Inc | 990EZ | Director | 1 | $0 | - | View return |
| 2020 | Needham Historical Society Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2020 | National Slag Association | 990 | Director | 0 | $0 | $0 | View return |
| 2020 | Darlington Football Boosters Inc. | 990EZ | Vice President | 2 | $0 | $0 | View return |
| 2020 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2020 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2020 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Employer Trustee | 1 | $0 | $0 | View return |
| 2020 | Riverside Community Care Inc. | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2019 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $42,000 | $0 | View return |
| 2019 | New York State Auctioneers Association Inc | 990EZ | Director | 1 | $0 | $0 | View return |
| 2019 | National Slag Association | 990 | Director | 0 | $0 | $0 | View return |
| 2019 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2019 | Sakima Country Club | 990 | House Chairm | 5 | $0 | $0 | View return |
| 2019 | Michigan Red Sox | 990 | Secretary | - | $0 | $0 | View return |
| 2019 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2019 | Darlington Football Boosters Inc. | 990EZ | Vice President | 2 | $0 | $0 | View return |
| 2019 | Needham Historical Society Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2019 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | American Family Housing | 990 | Director (Thru 9/19) | 1 | $0 | $0 | View return |
| 2019 | Plumbers and Steamfitters Local No 21 Education and Training Fund | 990 | Employer Trustee | 0.5 | $0 | $0 | View return |
| 2019 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Employer Trustee | 1 | $0 | $0 | View return |
| 2019 | Riverside Community Care Inc. | 990 | Secretary | 2 | $0 | $0 | View return |
| 2018 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $42,000 | $0 | View return |
| 2018 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2018 | New York State Auctioneers Association Inc | 990EZ | Director | 1 | $0 | $0 | View return |
| 2018 | American Family Housing | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Health and Welfare Fund of U a Local Union 373 | 990 | Management Trustee | 1 | $0 | $0 | View return |
| 2018 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Darlington Football Boosters Inc. | 990EZ | Vice President | 2 | $0 | $0 | View return |
| 2018 | Michigan Red Sox | 990 | Secretary | 3 | $0 | $0 | View return |
| 2018 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2018 | Journeymen & Apprenticeship Training & Educational Fund | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Employer Trustee | 1 | $0 | $0 | View return |
| 2018 | Plumbers and Steamfitters Local No 21 Education and Training Fund | 990 | Employer Trustee | 0.5 | $0 | $0 | View return |
| 2018 | Darlington Football Boosters Inc. | 990EZ | Vice President | 2 | $0 | $0 | View return |
| 2017 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $38,667 | $0 | View return |
| 2017 | Needham Historical Society Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2017 | Michigan Red Sox | 990 | Director | 10 | $0 | $0 | View return |
| 2017 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2017 | Westchester & Putnam Plumbers & Steamfitters Ind Labor Mgmnt Co-Op Committe | 990 | Trustee | 5 | $0 | $0 | View return |
| 2017 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | American Family Housing | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Plumbers and Steamfitters Local No 21 Health and Welfare Fund | 990 | Employer Trustee | 1 | $0 | $0 | View return |
| 2016 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $43,333 | $0 | View return |
| 2016 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2016 | Michigan Red Sox | 990 | Director | 10 | $0 | $0 | View return |
| 2016 | American Family Housing | 990 | Director | 1.3 | $0 | $0 | View return |
| 2016 | Needham Historical Society Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2016 | Dedham Historical Society | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $33,600 | $0 | View return |
| 2015 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2015 | Jacksonville Area Chamber of Commerce | 990 | Director | - | $0 | $0 | View return |
| 2015 | Needham Historical Society Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2015 | Dedham Historical Society | 990 | Recording Secretary | 1 | $0 | $0 | View return |
| 2014 | Plumbing & Mechanical Contractors Assoc | 990 | Executive Director | 40 | $72,000 | $0 | View return |
| 2014 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $32,400 | $0 | View return |
| 2014 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |
| 2014 | Dedham Historical Society | 990 | Recording Secretary | 1 | $0 | $0 | View return |
| 2014 | Michigan Red Sox | 990EZ | Secretary | 10 | $0 | - | View return |
| 2014 | Needham Historical Society Inc. | 990 | Director/Trustee | 0.1 | $0 | $0 | View return |
| 2014 | Jacksonville Area Chamber of Commerce | 990 | Chairman | - | $0 | $0 | View return |
| 2013 | Industry Advancement Fund Mechanical Contractors Assoc of Rockland Orange & | 990 | Director | 20 | $31,200 | $0 | View return |
| 2013 | Burlington Municipal Employees Credit Union | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Dedham Historical Society | 990 | Recording Secretary | 1 | $0 | $0 | View return |
| 2013 | Plumbing & Mechanical Contractors Assoc | 990 | Executive Director | 0 | $0 | $0 | View return |
| 2013 | Jacksonville Area Chamber of Commerce | 990 | Chair Elect | - | $0 | $0 | View return |
| 2013 | Sieg Foundation | 990EZ | President | 1 | $0 | $0 | View return |