| 2025 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2024 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Former Members of Congress Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2024 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2023 | Henry J Kaiser Family Foundation | 990 | Trustee, Chair | 4 | $34,500 | $0 | View return |
| 2023 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2023 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $25,000 | $0 | View return |
| 2022 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2022 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $25,000 | $0 | View return |
| 2021 | Henry J Kaiser Family Foundation | 990 | Trustee, Chair Effective Dec 15 2021 | 4 | $22,750 | $0 | View return |
| 2021 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2021 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Henry J Kaiser Family Foundation | 990 | Trustee | 4 | $22,000 | $0 | View return |
| 2020 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2020 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $75,000 | $0 | View return |
| 2019 | Henry J Kaiser Family Foundation | 990 | Trustee | 4 | $22,750 | $0 | View return |
| 2019 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2019 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2017 | Bipartisan Policy Center Inc. | 990 | Director, Co-Chair CPR | 10 | $50,000 | $0 | View return |
| 2017 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2016 | Bipartisan Policy Center Inc. | 990 | Director, Co-Chair CPR | 10 | $50,000 | $0 | View return |
| 2016 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2016 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Bipartisan Policy Center Inc. | 990 | Director, Co-Chair CPR | 10 | $50,000 | $0 | View return |
| 2015 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 10 | $0 | $0 | View return |
| 2014 | Bipartisan Policy Center Inc. | 990 | Director, Co-Chair CPR | 10 | $150,000 | $0 | View return |
| 2014 | Olympia Snowe Women'S Leadership Institute | 990 | Honorary Chair/Director | 7.5 | $0 | $0 | View return |
| 2014 | Commission on Presidential Debates | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Bipartisan Policy Center Inc. | 990 | Director, Co-Chair CPR | 10 | $150,000 | $0 | View return |