| 2025 | Skyhawk Flying Club | 990 | President | - | $0 | $0 | View return |
| 2025 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2024 | Trees for Houston | 990 | Director | 3 | $0 | $0 | View return |
| 2024 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2024 | La Pine Senior Citizens Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | The Areopagus Inc | 990EZ | Board Of Director | 0 | $0 | - | View return |
| 2023 | VFW Memorial Hall Assn Corp Orlando Newcomer Post 477 | 990 | Jr Vice Comm | 2 | $0 | $0 | View return |
| 2023 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2022 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2022 | Skyhawk Flying Club | 990 | President | - | $0 | $0 | View return |
| 2022 | Kids' Ark International Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Little Guild of St. Francis for the Welfare of Animals Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Buffalo Bayou Partnership Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2022 | Hope House of Tennessee Inc. | 990 | Individual Director | 2 | $0 | $0 | View return |
| 2022 | Burn Institute | 990 | President | 4 | $0 | $0 | View return |
| 2021 | Burn Institute | 990 | President | 4 | $0 | $0 | View return |
| 2021 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2021 | La Pine Senior Citizens Inc. | 990 | Director | 4 | $0 | $0 | View return |
| 2020 | Trees for Houston | 990 | Vice President | 5 | $0 | $0 | View return |
| 2020 | Weston Scouts Inc C/O Timothy Gavin | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2020 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2020 | La Pine Senior Citizens Inc. | 990 | Director | 4 | $0 | $0 | View return |
| 2019 | Darien Library Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Benevolent & Protective Order of Elks of the USA | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2018 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2018 | La Pine Senior Citizens Inc. | 990 | Director | 12 | $0 | $0 | View return |
| 2018 | Burn Institute | 990 | President | 4 | $0 | $0 | View return |
| 2017 | Ott Charitable Foundation | 990PF | President | 2 | $0 | $0 | View return |
| 2017 | Weston Scouts Inc C/O Timothy Gavin | 990EZ | Trustee | 0 | $0 | $0 | View return |
| 2017 | Burn Institute | 990 | President | 4 | $0 | $0 | View return |
| 2017 | La Pine Senior Citizens Inc. | 990 | Director | 12 | $0 | $0 | View return |
| 2017 | Friends of Kwmu Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Ancient Free & Accepted Masons of Minnesota | 990 | Master | 1 | $0 | $0 | View return |
| 2016 | Ancient Free & Accepted Masons of Minnesota | 990 | Marshal | 1 | $0 | $0 | View return |
| 2015 | La Pine Senior Citizens Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | Seiu Healthcare Wisconsin | 990 | Director | 0.6 | $0 | $0 | View return |
| 2015 | Hattiesburg CIVIC Chorus & Concert Association Inc. | 990 | Chairman | - | $0 | $0 | View return |
| 2015 | Buffalo Bayou Partnership Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Friends of Kwmu Inc. | 990EZ | Board President | 1 | $0 | $0 | View return |
| 2015 | Burn Institute | 990 | President | 4 | $0 | $0 | View return |
| 2014 | Hocking Valley Motorcycle Club | 990EZ | Treasurer | 0 | $0 | - | View return |
| 2014 | La Pine Senior Citizens Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Seiu Healthcare Wisconsin | 990 | Director | 0.25 | $0 | $0 | View return |
| 2014 | Hattiesburg CIVIC Chorus & Concert Association Inc. | 990 | Chairman | - | $0 | $0 | View return |
| 2014 | Ancient Free & Accepted Masons of Minnesota | 990 | Sr. Warden | 1 | $0 | $0 | View return |
| 2013 | Seiu Healthcare Wisconsin | 990 | Director | 1 | $761 | $0 | View return |
| 2013 | Ancient Free & Accepted Masons of Minnesota | 990 | Jr. Warden | 1 | $0 | $0 | View return |
| 2010 | Viking Global Foundation Inc C/O Viking Global Investors LP | 990PF | Director | 1 | $0 | $0 | View return |