| 2024 | The Summit Charitable Foundation Inc | 990PF | President | 40 | $395,831 | $75,910 | View return |
| 2024 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2023 | The Summit Charitable Foundation Inc | 990PF | President | 40 | $385,275 | $85,138 | View return |
| 2023 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2023 | Sant Charitable Foundation Inc | 990PF | President/Director | 8 | $0 | $0 | View return |
| 2023 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Maret School Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2022 | The Summit Charitable Foundation Inc | 990PF | President | 40 | $354,276 | $31,884 | View return |
| 2022 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2022 | Sant Charitable Foundation Inc | 990PF | President/Director | 8 | $0 | $0 | View return |
| 2022 | Maret School Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2021 | The Summit Charitable Foundation Inc | 990PF | President | 40 | $335,808 | $30,200 | View return |
| 2021 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2021 | Sant Charitable Foundation Inc | 990PF | President/Director | 8 | $0 | $0 | View return |
| 2021 | Maret School Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2020 | The Summit Charitable Foundation Inc | 990PF | President | 40 | $326,028 | $29,342 | View return |
| 2020 | Sant Charitable Foundation Inc | 990PF | President/Director | 8 | $0 | $0 | View return |
| 2020 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2020 | Maret School Inc. | 990 | Trustee | 2 | $0 | $0 | View return |
| 2019 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2019 | Sant Charitable Foundation Inc | 990PF | President/Director | 8 | $0 | $0 | View return |
| 2018 | Sant Charitable Foundation Inc | 990PF | President/Director | 40 | $165,000 | $15,000 | View return |
| 2018 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2018 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Sant Charitable Foundation Inc | 990PF | President | 40 | $165,000 | $15,000 | View return |
| 2017 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2017 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Sant Charitable Foundation Inc | 990PF | President | 1 | $165,000 | $15,000 | View return |
| 2016 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2015 | Coast Dairies & Land Company | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Sant Charitable Foundation Inc | 990PF | President | 1 | $0 | $0 | View return |
| 2015 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2014 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2014 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Coast Dairies & Land Company | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Chesapeake Bay Foundation Inc. | 990 | Trustee (Until 01/15) | 1 | $0 | $0 | View return |
| 2013 | The Trust for Public Land | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Ivorybill Foundation Inc C/O P Martin Ashford Advisors LLC | 990PF | President, Treasurer & Director | 1 | $0 | $0 | View return |
| 2013 | Coast Dairies & Land Company | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Chesapeake Bay Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |