| 2023 | J Landis and Sharon Martin Family Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2023 | Clyfford Still Museum Foundation | 990 | President Th | 0.25 | $0 | $0 | View return |
| 2023 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2022 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2022 | Clyfford Still Museum Foundation | 990 | President | 0.25 | $0 | $0 | View return |
| 2022 | J Landis and Sharon Martin Family Foundation | 990PF | Director | 0 | $0 | $0 | View return |
| 2022 | Denver Art Museum Inc. | 990 | Trustee Thru | 1 | $0 | $0 | View return |
| 2022 | The Denver Art Museum Foundation | 990 | Director | 5 | $0 | $0 | View return |
| 2021 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2021 | J Landis and Sharon Martin Family Foundation | 990PF | Director | 0 | $0 | $0 | View return |
| 2021 | Clyfford Still Museum Foundation | 990 | President | 0.25 | $0 | $0 | View return |
| 2021 | Denver Art Museum Inc. | 990 | Chairperson | 1 | $0 | $0 | View return |
| 2021 | The Denver Art Museum Foundation | 990 | Chair/Treas/ | 5 | $0 | $0 | View return |
| 2020 | Clyfford Still Museum Foundation | 990 | President | 0.25 | $0 | $0 | View return |
| 2020 | J Landis and Sharon Martin Family Foundation | 990PF | Director | 0 | $0 | $0 | View return |
| 2020 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2020 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2020 | The Denver Art Museum Foundation | 990 | Chairman And President | 5 | $0 | $0 | View return |
| 2019 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2019 | J Landis and Sharon Martin Family Foundation | 990PF | Director | 0 | $0 | $0 | View return |
| 2019 | Clyfford Still Museum Foundation | 990 | President | 0.25 | $0 | $0 | View return |
| 2019 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2019 | The Denver Art Museum Foundation | 990 | Chairman And President | 5 | $0 | $0 | View return |
| 2018 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2018 | Clyfford Still Museum Foundation | 990 | President | 0.25 | $0 | $0 | View return |
| 2018 | J Landis and Sharon Martin Family Foundation | 990PF | Director | 0 | $0 | $0 | View return |
| 2018 | The Denver Art Museum Foundation | 990 | Chairman And Presiden | 5 | $0 | $0 | View return |
| 2018 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2018 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2017 | Clyfford Still Museum Foundation | 990 | President | 0.5 | $0 | $0 | View return |
| 2017 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2017 | Central City Opera House Association | 990 | Chairman Emeritus | 2 | $0 | $0 | View return |
| 2017 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2016 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2016 | Clyfford Still Museum Foundation | 990 | President | 0.5 | $0 | $0 | View return |
| 2016 | Central City Opera House Association | 990 | Board Member | 2 | $0 | $0 | View return |
| 2016 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2015 | Clyfford Still Museum Foundation | 990 | President | 0.5 | $0 | $0 | View return |
| 2015 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2015 | Central City Opera House Association | 990 | Board Member | 2 | $0 | $0 | View return |
| 2015 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2014 | Central City Opera House Association Endowment Fund | 990 | President | 0.5 | $0 | $0 | View return |
| 2014 | Clyfford Still Museum Foundation | 990 | President | 0.5 | $0 | $0 | View return |
| 2014 | Central City Opera House Association | 990 | Board Member | 2 | $0 | $0 | View return |
| 2014 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2013 | Central City Opera House Association | 990 | Board Member | 2 | $0 | $0 | View return |
| 2013 | Clyfford Still Museum Foundation | 990 | President | 0.5 | $0 | $0 | View return |
| 2013 | Denver Art Museum Inc. | 990 | Chairman | 1 | $0 | $0 | View return |
| 2013 | Northwestern University | 990 | Trustee | 1 | $0 | $0 | View return |