| 2025 | Buffalo Bill Memorial Association | 990 | Trustee | 4.8 | $0 | $0 | View return |
| 2024 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2024 | Buffalo Bill Memorial Association | 990 | Trustee | 4.8 | $0 | $0 | View return |
| 2024 | Hal R and Naoma J Tate Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2024 | Berkeley Geochronology Center | 990 | Member | 1 | $0 | $0 | View return |
| 2024 | American Friends of the Louvre Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Buffalo Bill Memorial Association | 990 | Trustee | 0.96 | $0 | $0 | View return |
| 2023 | Hal R and Naoma J Tate Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2023 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2023 | Berkeley Geochronology Center | 990 | Member | 1 | $0 | $0 | View return |
| 2023 | American Friends of the Louvre Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Buffalo Bill Memorial Association | 990 | Trustee | 2.3 | $0 | $0 | View return |
| 2022 | Hal R and Naoma J Tate Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2022 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2022 | Berkeley Geochronology Center | 990 | Member | 1 | $0 | $0 | View return |
| 2022 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Vice President | 1 | $0 | $0 | View return |
| 2022 | American Friends of the Louvre Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Buffalo Bill Memorial Association | 990 | Trustee | 1.1 | $0 | $0 | View return |
| 2021 | Hal R and Naoma J Tate Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2021 | American Friends of the Louvre Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Vice President | 1 | $0 | $0 | View return |
| 2021 | The National Trust for Scotland Foundation USA Inc. | 990 | Secretary | 2 | $0 | $0 | View return |
| 2021 | Berkeley Geochronology Center | 990 | Member | 1 | $0 | $0 | View return |
| 2020 | Hal R and Naoma J Tate Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2020 | American Friends of the Louvre Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Buffalo Bill Memorial Association | 990 | Trustee | 2.3 | $0 | $0 | View return |
| 2019 | Hal R and Naoma J Tate Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2019 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | The National Trust for Scotland Foundation USA Inc. | 990 | Secretary | 2 | $0 | $0 | View return |
| 2019 | American Friends of the Louvre Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Buffalo Bill Memorial Association | 990 | Trustee | 2.3 | $0 | $0 | View return |
| 2018 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The National Trust for Scotland Foundation USA Inc. | 990 | Secretary/Director | 2 | $0 | $0 | View return |
| 2017 | Buffalo Bill Memorial Association | 990 | Trustee | 4.8 | $0 | $0 | View return |
| 2017 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | Buffalo Bill Memorial Association | 990 | Trustee | 2 | $0 | $0 | View return |
| 2016 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2016 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Buffalo Bill Memorial Association | 990 | Vice Chair | 1.9 | $0 | $0 | View return |
| 2015 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Buffalo Bill Memorial Association | 990 | Trustee | 8 | $0 | $0 | View return |
| 2014 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2014 | Utah Symphony & Opera | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Buffalo Bill Memorial Association | 990 | Vice Chair | 8 | $0 | $0 | View return |
| 2013 | The National Trust for Scotland Foundation USA Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2013 | Lsb Leakey Fdtn for Research Related to Human Origins Behavior and Survival | 990 | Trustee | 1 | $0 | $0 | View return |