| 2025 | Adventure Gallup & Beyond | 990 | COG Rep | - | $0 | $0 | View return |
| 2025 | Nevada Pharmacy Alliance | 990EZ | Treasurer | 5 | $0 | - | View return |
| 2025 | The Ink Shop Printmaking Center Olive Branch Press | 990EZ | Board Member | 0 | $0 | - | View return |
| 2024 | Triple Bottom Line Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Evan Williams Foundation | 990PF | CEO, CFO, Secretary | 0 | $0 | $0 | View return |
| 2024 | Nevada Pharmacy Alliance | 990EZ | Treasurer | 5 | $0 | $0 | View return |
| 2024 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 2 | $0 | $0 | View return |
| 2024 | The Ink Shop Printmaking Center Olive Branch Press | 990EZ | Board Member | 0 | $0 | - | View return |
| 2024 | Do IT for James Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2024 | Idaherma Museum of Art Foundation Inc. | 990PF | President | 11 | $0 | - | View return |
| 2024 | Dundee Scottish | 990EZ | Treasurer | 5 | $0 | $0 | View return |
| 2024 | Oklahoma City Association of Professional Petroleum Landmen | 990 | Executive Co | - | $0 | $0 | View return |
| 2024 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 2 | $0 | $0 | View return |
| 2024 | Commissioned Officers Association of the Usphs Inc | 990 | Member | 1 | $0 | $0 | View return |
| 2023 | Nevada Pharmacy Alliance | 990EZ | Treasurer | 5 | $0 | $0 | View return |
| 2023 | Entertainment Services and Technology Association | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Central Ohio Youth for Christ Inc | 990 | Vice Chairperson | 1 | $0 | $0 | View return |
| 2023 | Star Hose Company No 1 | 990 | Trustee | 3 | $0 | $0 | View return |
| 2023 | Do IT for James Foundation | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Acacia Fraternity | 990 | Recruitment | - | $0 | $0 | View return |
| 2023 | Evan Williams Foundation | 990PF | CEO, CFO, Secretary | 0 | $0 | $0 | View return |
| 2023 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 2 | $0 | $0 | View return |
| 2023 | Coalition for Renewable Natural Gas Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2023 | Triple Bottom Line Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Boys & Girls Club of Greater Lee County | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Idaherma Museum of Art Foundation Inc. | 990PF | President | 11 | $0 | - | View return |
| 2023 | Gracehaven Inc. | 990 | Vice Chairperson | 0.5 | $0 | $0 | View return |
| 2023 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2023 | Commissioned Officers Association of the Usphs Inc | 990 | Member | 1 | $0 | $0 | View return |
| 2023 | Gracehaven Inc. | 990 | Vice Chairperson | 0.5 | $0 | $0 | View return |
| 2023 | Newport Harbor Baseball Association | 990 | President | 3 | $0 | $0 | View return |
| 2023 | Wilmington College | 990 | Trustee / Treasurer | 1 | $0 | $0 | View return |
| 2023 | Central Ohio Youth for Christ Inc | 990 | Vice Chairperson | 1 | $0 | $0 | View return |
| 2022 | Boys & Girls Club of Greater Lee County | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 2 | $0 | $0 | View return |
| 2022 | Eagle Creek Sailing Club Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | Coalition for Renewable Natural Gas Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Star Hose Company No 1 | 990 | Trustee | 3 | $0 | $0 | View return |
| 2022 | American Veterans of World War II | 990EZ | Comander | 1 | $0 | $0 | View return |
| 2022 | Idaherma Museum of Art Foundation Inc. | 990PF | President | 11 | $0 | - | View return |
| 2022 | Commissioned Officers Association of the Usphs Inc | 990 | Member | 1 | $0 | $0 | View return |
| 2022 | Central Ohio Youth for Christ Inc | 990 | Vice Chairperson | 1 | $0 | $0 | View return |
| 2022 | Newport Harbor Baseball Association | 990 | Mariners Select | 3 | $0 | $0 | View return |
| 2022 | Gracehaven Inc. | 990 | Vice Chairperson | 0.5 | $0 | $0 | View return |
| 2022 | Wilmington College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Tompkins County Mental Health Association | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2021 | Austin Chapter 61 of the Institute of Real Estate Management of The | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2021 | Star Hose Company No 1 | 990 | Trustee | 3 | $0 | $0 | View return |
| 2021 | Coalition for Renewable Natural Gas Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2021 | American Veterans of World War II | 990EZ | President | 1 | $0 | $0 | View return |
| 2021 | Idaherma Museum of Art Foundation Inc. | 990PF | President | 11 | $0 | - | View return |
| 2021 | Newport Harbor Baseball Association | 990 | Mustang Div | 2 | $0 | $0 | View return |
| 2021 | Gracehaven Inc. | 990 | Vice Chairperson | 0.5 | $0 | $0 | View return |
| 2021 | California State University Fresno Athletic Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Wilmington College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Central Ohio Youth for Christ Inc | 990 | Vice Chairperson | 1 | $0 | $0 | View return |
| 2021 | Central Ohio Youth for Christ Inc | 990 | Vice Chairperson | 1 | $0 | $0 | View return |
| 2020 | National Housing & Rehabilitation Association | 990 | Director | 0 | $0 | $0 | View return |
| 2020 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Central Ohio Youth for Christ Inc | 990 | Vicechairperson | 1 | $0 | $0 | View return |
| 2020 | American Veterans of World War II | 990EZ | President | 1 | $0 | $0 | View return |
| 2020 | Gracehaven Inc. | 990 | Vice Chairman | 0.5 | $0 | $0 | View return |
| 2020 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2020 | Youth and Family Impact Inc | 990PF | Vicechairperson | 1 | $0 | - | View return |
| 2020 | Tompkins County Mental Health Association | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Coalition for Renewable Natural Gas Inc | 990 | President | 2 | $0 | $0 | View return |
| 2020 | Beta Theta Pi - Gamma Phi Chapter | 990 | Vice President | 5 | $0 | $0 | View return |
| 2020 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2020 | Austin Chapter 61 of the Institute of Real Estate Management of The | 990 | Director | 2 | $0 | $0 | View return |
| 2020 | Idaherma Museum of Art Foundation Inc. | 990PF | Vice President | 10 | $0 | - | View return |
| 2020 | Wilmington College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Sigma Pi Fraternity International Inc | 990 | President | 0 | $0 | $0 | View return |
| 2019 | Youth and Family Impact Inc | 990PF | Director | 1 | $0 | - | View return |
| 2019 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | American Veterans of World War II | 990EZ | Commander | 1 | $0 | $0 | View return |
| 2019 | Central Ohio Youth for Christ Inc | 990 | Director | 1.5 | $0 | $0 | View return |
| 2019 | Gracehaven Inc. | 990 | Director | 1.5 | $0 | $0 | View return |
| 2019 | Coalition for Renewable Natural Gas Inc | 990 | President | 2 | $0 | $0 | View return |
| 2019 | Tompkins County Mental Health Association | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2019 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2019 | Idaherma Museum of Art Foundation Inc. | 990PF | Vice President | 10 | $0 | - | View return |
| 2019 | Wilmington College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Beta Theta Pi - Gamma Phi Chapter | 990 | Vice President | 5 | $0 | $0 | View return |
| 2019 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Youth and Family Impact Inc | 990PF | Director | 1 | $0 | - | View return |
| 2018 | Gracehaven Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Coalition for Renewable Natural Gas Inc | 990 | President | 5 | $0 | $0 | View return |
| 2018 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2018 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | American Veterans of World War II | 990EZ | Commander | 1 | $0 | $0 | View return |
| 2018 | Central Ohio Youth for Christ Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Wilmington College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Idaherma Museum of Art Foundation Inc. | 990PF | Secretary | 20 | $0 | - | View return |
| 2017 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Robert T and Marcia L Williams Family | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2017 | American Veterans of World War II | 990EZ | Treasurer | 1 | $0 | $0 | View return |
| 2017 | Central Ohio Youth for Christ Inc | 990 | Director - 6/18 | 2 | $0 | $0 | View return |
| 2017 | Youth and Family Impact Inc | 990PF | Director - 6/18 | 1 | $0 | - | View return |
| 2017 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2017 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2017 | Gracehaven Inc. | 990 | Director - 6/18 | 1 | $0 | $0 | View return |
| 2017 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2016 | American Veterans of World War II | 990EZ | Treasurer | 1 | $0 | $0 | View return |
| 2016 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2016 | Lawrence Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Appraisal Institute | 990 | Director, Prof Svcs & Resources | 37.5 | $146,701 | $0 | View return |
| 2015 | American Veterans of World War II | 990EZ | Treasurer | 1 | $0 | $0 | View return |
| 2015 | Lawrence Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2015 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2015 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2014 | Longhorn Village | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | The Arc of the Capital Area | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Sara & Evan Williams Foundation C/O Adler & Colvin | 990PF | VP, Treasurer, Secretary | 0 | $0 | $0 | View return |
| 2014 | American Veterans of World War II | 990EZ | Treasurer | 1 | $0 | $0 | View return |
| 2014 | Illinois Mechanical Specialty Contractors Association | 990 | Vice Preside | - | $0 | $0 | View return |
| 2014 | Lawrence Arts Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Longhorn Village | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Mechanical Contractors Association | 990 | Vice President-External | 40 | $121,672 | $0 | View return |
| 2013 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2013 | Douglas County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Illinois Mechanical Specialty Contractors Association | 990 | Vice Preside | - | $0 | $0 | View return |
| 2013 | The Arc of the Capital Area | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Lawrence Arts Center Inc. | 990EZ | Director | 1 | $0 | - | View return |
| 2013 | American Veterans of World War II | 990EZ | Treasurer | 1 | $0 | $0 | View return |
| 2013 | Longhorn Village | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Association Forum of Chicagoland Foundation | 990 | Chair | 1 | $0 | $0 | View return |
| 2013 | Association Forum of Chicagoland | 990 | Chair | 2 | $0 | $0 | View return |
| 2013 | Purple Owl House Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2012 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2011 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |
| 2010 | Williams Family Foundation | 990PF | President | 0 | $0 | - | View return |