| 2025 | Learning Starts Early | 990EZ | Co Chair | 2 | $0 | - | View return |
| 2023 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2023 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2022 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2022 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2022 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2021 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2021 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2021 | Learning Starts Early | 990EZ | Chairman | 10 | $0 | - | View return |
| 2021 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2020 | William and Claire Dart Foundation | 990PF | President, Treasurer, Dire | 0 | $0 | $0 | View return |
| 2020 | Learning Starts Early | 990EZ | Chairman | 10 | $0 | - | View return |
| 2020 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2020 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2019 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2019 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2019 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2018 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2018 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2018 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2017 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2017 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secre | 0 | $0 | $0 | View return |
| 2017 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2016 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2016 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secre | 0 | $0 | $0 | View return |
| 2016 | Robert C Dart Foundation | 990PF | President, Treasurer, & Di | 0 | $0 | $0 | View return |
| 2015 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secre | 0 | $0 | $0 | View return |
| 2015 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2015 | Calaveras Junior Redskins Youth Football and Cheer Program | 990EZ | Director | 10 | $0 | - | View return |
| 2015 | Robert C Dart Foundation | 990PF | President, Treasurer, & Di | 0 | $0 | $0 | View return |
| 2014 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2014 | Calaveras Junior Redskins Youth Football and Cheer Program | 990EZ | Director | 30 | $0 | - | View return |
| 2014 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2014 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2013 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | Chairman, President, Secretary | 0 | $0 | $0 | View return |
| 2013 | Calaveras Junior Redskins Youth Football and Cheer Program | 990EZ | Director | 30 | $0 | - | View return |
| 2013 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2013 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2012 | Robert C Dart Foundation | 990PF | President, Treasurer, & Director | 0 | $0 | $0 | View return |
| 2011 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2011 | Dart Foundation Fka Solid Waste Management Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2011 | Robert C Dart Foundation | 990PF | President & Treasurer | 0 | $0 | $0 | View return |
| 2010 | Robert C Dart Foundation | 990PF | President & Treasurer | 0 | $0 | $0 | View return |
| 2010 | William and Claire Dart Foundation | 990PF | President, Treasurer, Director | 0 | $0 | $0 | View return |
| 2009 | Robert C Dart Foundation | 990PF | President & Treasurer | 0 | $0 | $0 | View return |