| 2024 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2024 | Henry and Louise Timken Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2024 | Stark Education Partnership Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Henry and Louise Timken Foundation | 990 | President | 1 | $0 | $0 | View return |
| 2023 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2023 | Stark Education Partnership Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Henry and Louise Timken Foundation | 990 | President (Beginning 6/22) | 1 | $0 | $0 | View return |
| 2022 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2022 | Stark Education Partnership Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2020 | North Canton Medical Foundation | 990 | Board Member (Termed 02/25/20) | 2 | $0 | $0 | View return |
| 2020 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2019 | North Canton Medical Foundation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2019 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2018 | North Canton Medical Foundation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2018 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2017 | North Canton Medical Foundation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2017 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2017 | Community Services of Stark County Inc | 990 | Director | 2 | $0 | $0 | View return |
| 2016 | North Canton Medical Foundation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2016 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2016 | Gertrude Mead Ott Charitable Fund | 990PF | Ttee | 1 | $0 | - | View return |
| 2016 | St George'S School | 990 | Individual Trustee | 2 | $0 | $0 | View return |
| 2016 | Quest Recovery and Prevention Services Incorporated | 990 | Director | 2 | $0 | $0 | View return |
| 2015 | North Canton Medical Foundation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2015 | Quest Recovery and Prevention Services Incorporated | 990 | Trustee | 2 | $0 | $0 | View return |
| 2015 | Gertrude Mead Ott Charitable Fund | 990PF | Ttee | 1 | $0 | - | View return |
| 2015 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2015 | St George'S School | 990 | Individual Trustee | 2 | $0 | $0 | View return |
| 2014 | Gertrude Mead Ott Charitable Fund | 990PF | Ttee | 1 | $0 | - | View return |
| 2014 | The Timken Matthews Family Foundation | 990PF | Pres/Ttee | 1 | $0 | - | View return |
| 2014 | St George'S School | 990 | Individual Trustee | 2 | $0 | $0 | View return |
| 2013 | Community Services of Stark County Inc | 990 | Board Director | 2 | $0 | $0 | View return |
| 2013 | Gertrude Mead Ott Charitable Fund | 990PF | Ttee | 1 | $0 | - | View return |
| 2012 | Gertrude Mead Ott Charitable Fund | 990PF | Ttee | 1 | $0 | - | View return |
| 2012 | The Timken Matthews Family Foundation | 990PF | Pres/Sec/Ttee | 1 | $0 | - | View return |
| 2011 | The Timken Matthews Family Foundation | 990PF | Pres/Sec/Trustee | 1 | $0 | - | View return |
| 2011 | Gertrude Mead Ott Charitable Fund | 990PF | Trustee | 0 | $0 | - | View return |
| 2010 | The Timken Matthews Family Foundation | 990PF | Pres/Sec/Trustee | 1 | $0 | $0 | View return |
| 2010 | Gertrude Mead Ott Charitable Fund | 990PF | Trustee | 1 | $0 | $0 | View return |