| 2024 | St. Louis Regional Crime Commission | 990 | Director | 3 | $0 | $0 | View return |
| 2024 | Grand Chess Tour | 990PF | President | 1 | $0 | $0 | View return |
| 2024 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2024 | Sinquefield Center for Research Inc. | 990 | Chairperson | 0.8 | $0 | $0 | View return |
| 2024 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2024 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2024 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2023 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2023 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2023 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2023 | Grand Chess Tour | 990PF | President | 1 | $0 | $0 | View return |
| 2023 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2023 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2022 | Grand Chess Tour | 990PF | President | 1 | $0 | $0 | View return |
| 2022 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2022 | Sinquefield Center for Research Inc. | 990 | Chairperson | 0.75 | $0 | $0 | View return |
| 2022 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2022 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2022 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2022 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2021 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2021 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2021 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2021 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2021 | Sinquefield Center for Research Inc. | 990 | Chairperson | 0.75 | $0 | $0 | View return |
| 2021 | Grand Chess Tour | 990PF | President | 1 | $0 | $0 | View return |
| 2021 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2020 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2020 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2020 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2020 | Sinquefield Center for Research Inc. | 990 | Chairperson | 0.75 | $0 | $0 | View return |
| 2020 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2020 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2020 | Grand Chess Tour | 990PF | President | 1 | $0 | $0 | View return |
| 2020 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2019 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2019 | Sinquefield Center for Research Inc. | 990 | Chairperson | 0.75 | $0 | $0 | View return |
| 2019 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2019 | Grand Chess Tour | 990 | President | 1 | $0 | $0 | View return |
| 2019 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2019 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2019 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2019 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2018 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2018 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2018 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2018 | Grand Chess Tour | 990 | President | 1 | $0 | $0 | View return |
| 2018 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2018 | Sinquefield Center for Research Inc. | 990 | Chairperson | 0.75 | $0 | $0 | View return |
| 2018 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Chess Club and Scholastic Center of Saint Louis | 990 | President & Chairman | 16 | $0 | $0 | View return |
| 2017 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2017 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2017 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2017 | Grand Chess Tour | 990 | President | 1 | $0 | $0 | View return |
| 2017 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2017 | Saint Louis Symphony Orchestra | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Saint Louis Symphony Endowment Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Missouri Historical Society Jefferson Memorial Building | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Grand Chess Tour | 990 | President | 1 | $0 | $0 | View return |
| 2016 | U S Chess Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | World Chess Museum Inc. | 990 | President | 8 | $0 | $0 | View return |
| 2016 | Chess Club and Scholastic Center of Saint Louis | 990 | Chairman | 16 | $0 | $0 | View return |
| 2016 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2016 | Missouri Botanical Garden Board of Trustees | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2016 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2016 | Saint Louis Symphony Endowment Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | World Chess Museum Inc. | 990 | President | 5 | $0 | $0 | View return |
| 2015 | The German St Vincent Orphan Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2015 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2015 | Missouri Historical Society Jefferson Memorial Building | 990 | Assistant Secretary | 1 | $0 | $0 | View return |
| 2015 | Chess Club and Scholastic Center of Saint Louis | 990 | Chairman | 10 | $0 | $0 | View return |
| 2015 | Missouri Botanical Garden Board of Trustees | 990 | Regular Trustee | 1 | $0 | $0 | View return |
| 2015 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2015 | Grand Chess Tour | 990EZ | Director/President | 2 | $0 | $0 | View return |
| 2015 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2015 | Saint Louis Symphony Endowment Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | The German St Vincent Orphan Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2014 | Chess Club and Scholastic Center of Saint Louis | 990 | Chairman | 10 | $0 | $0 | View return |
| 2014 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2014 | World Chess Museum Inc. | 990 | President | 5 | $0 | $0 | View return |
| 2014 | Missouri Historical Society Jefferson Memorial Building | 990 | Assistant Secretary | 1 | $0 | $0 | View return |
| 2014 | Missouri Botanical Garden Board of Trustees | 990 | Regular Trustee | 0 | $0 | $0 | View return |
| 2014 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2014 | St. Louis University | 990 | Trustee | 10 | $0 | $0 | View return |
| 2014 | Saint Louis Symphony Endowment Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | World Chess Museum Inc. | 990 | President | 5 | $0 | $0 | View return |
| 2013 | Missouri Botanical Garden Board of Trustees | 990 | Regular Trustee | 0 | $0 | $0 | View return |
| 2013 | Chess Club and Scholastic Center of Saint Louis | 990 | Chairman | 10 | $0 | $0 | View return |
| 2013 | Contemporary Art Museum St. Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Missouri Historical Society Jefferson Memorial Building | 990 | Assistant Secretary | 1 | $0 | $0 | View return |
| 2013 | Show-Me Institute | 990 | President | 2 | $0 | $0 | View return |
| 2013 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2013 | Saint Louis Symphony Endowment Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Opera Theatre of Saint Louis | 990 | Board Member | 1 | $0 | $0 | View return |
| 2012 | Sinquefield Charitable Foundation | 990PF | Director | 1 | $0 | $0 | View return |