| 2024 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2024 | Sonoma Land Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2023 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2023 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Sonoma Land Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2023 | The Book Club of California | 990 | Director | 0.38 | $0 | $0 | View return |
| 2022 | Sonoma County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2022 | Sonoma Land Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2022 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | The Book Club of California | 990 | Director | 0.38 | $0 | $0 | View return |
| 2021 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2021 | Sonoma County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Book Club of California | 990 | Director | 0.38 | $0 | $0 | View return |
| 2021 | Sonoma Land Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2021 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2020 | Sonoma County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Sonoma Valley Hospital Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2019 | Sonoma County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Sonoma County Community Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Sonoma Land Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2019 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Simon Blattner Family Foundation | 990PF | President | 1 | $0 | $0 | View return |
| 2018 | Sonoma Valley Hospital Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Sonoma Land Trust | 990 | Board Member | 2 | $0 | $0 | View return |
| 2018 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Sonoma Valley Hospital Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2017 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Sonoma Land Trust | 990 | Board Member(Starting 03/17) | 2 | $0 | $0 | View return |
| 2016 | Simon Blattner Family Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2016 | Sonoma Valley Hospital Foundation | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Sonoma Valley Museum of Art | 990 | Past President | 1 | $0 | $0 | View return |
| 2015 | Simon Blattner Family Foundation | 990PF | President | 1 | $0 | $0 | View return |
| 2015 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | Sonoma Valley Museum of Art | 990 | Director/Pres | 5 | $0 | $0 | View return |
| 2014 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | California College of the Arts | 990 | Trustee | 1 | $0 | $0 | View return |