| 2025 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2024 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2024 | The Sosland Foundation | 990PF | Chairman, Director | 1 | $0 | $0 | View return |
| 2023 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2023 | The Sosland Foundation | 990PF | Chairman, Director | 1 | $0 | $0 | View return |
| 2022 | Union Station Kansas City Inc | 990 | Director - Secretary | 1 | $0 | $0 | View return |
| 2022 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | The Sosland Foundation | 990PF | Vice Chairman, Director | 1 | $0 | $0 | View return |
| 2021 | The Sosland Foundation | 990PF | Vice Chairman, Director | 1 | $0 | $0 | View return |
| 2021 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2021 | Linda Hall Library Trusts | 990PF | Trustee | 0.4 | $0 | $0 | View return |
| 2021 | Union Station Kansas City Inc | 990 | Director - Secretary | 1 | $0 | $0 | View return |
| 2021 | Linda Hall Library Foundation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2020 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2020 | Linda Hall Library Foundation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2020 | Union Station Kansas City Inc | 990 | Director - Secretary | 1 | $0 | $0 | View return |
| 2020 | Linda Hall Library Trusts | 990PF | Trustee | 0.4 | $0 | $0 | View return |
| 2020 | The Sosland Foundation | 990PF | Vice Chairman, Director | 1 | $0 | $0 | View return |
| 2020 | Economic Club of Kansas City | 990 | Director | 0.5 | $0 | $0 | View return |
| 2019 | Union Station Kansas City Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Economic Club of Kansas City | 990 | Director | 0.25 | $0 | $0 | View return |
| 2019 | Linda Hall Library Trusts | 990PF | Trustee | 0.4 | $0 | $0 | View return |
| 2019 | Linda Hall Library Foundation | 990 | Director | 0.1 | $0 | $0 | View return |
| 2019 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2019 | Umkc Foundation | 990 | Emeritus Director | 1 | $0 | $0 | View return |
| 2019 | Umkc Foundation | 990 | Emeritus Director | 1 | $0 | $0 | View return |
| 2018 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | Union Station Kansas City Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | The Nelson Gallery Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The William Rockhill Nelson Trust | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2018 | Umkc Foundation | 990 | Emeritus Director | 1 | $0 | $0 | View return |
| 2017 | The Nelson Gallery Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2017 | The William Rockhill Nelson Trust | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2017 | Umkc Foundation | 990 | Emeritus Director | 1 | $0 | $0 | View return |
| 2016 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2016 | The Nelson Gallery Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | The William Rockhill Nelson Trust | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2016 | Umkc Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The William Rockhill Nelson Trust | 990 | Trustee | 1 | - | - | View return |
| 2015 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2015 | The William Rockhill Nelson Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Charlotte Street Foundation | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | The Nelson Gallery Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Umkc Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | The Harry S Truman Library Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | The William Rockhill Nelson Trust | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Nelson Gallery Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Charlotte Street Foundation | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | The Harry S Truman Library Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Umkc Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | The Nelson Gallery Foundation | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Charlotte Street Foundation | 990 | Treasurer | 2 | $0 | $0 | View return |
| 2013 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2013 | Umkc Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | The Harry S Truman Library Institute | 990 | Director | 1 | $0 | $0 | View return |
| 2012 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2011 | The Sosland Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2011 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2010 | The Estelle and Morton Sosland | 990PF | Trustee | 1 | $0 | $0 | View return |