| 2024 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2023 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2023 | The Bryn Mawr School for Girls of Baltimore City Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | The Bryn Mawr School for Girls of Baltimore City Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2021 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2021 | The Bryn Mawr School for Girls of Baltimore City Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2020 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2020 | The Bryn Mawr School for Girls of Baltimore City Inc | 990 | Trustee | 1 | $0 | $0 | View return |
| 2019 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2019 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2017 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2017 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2016 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Mpt Foundation Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | Mpt Foundation Inc. | 990 | Director | 0.5 | $0 | $0 | View return |
| 2015 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2015 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2014 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |
| 2013 | The Valleys Planning Council Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2012 | Howard P Colhoun Family Foundation Inc | 990PF | President | 10 | $0 | $0 | View return |