| 2024 | Alfred P Sloan Foundation | 990PF | Trustee/President | 40 | $1,210,275 | $83,375 | View return |
| 2024 | California Cable & Telecommunications Association | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | Us-Mexico Border Philanthropy Partnership | 990 | Board Member | 1 | $0 | $0 | View return |
| 2024 | Science Communication Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Alfred P Sloan Foundation | 990PF | Trustee/President | 40 | $1,164,255 | $80,250 | View return |
| 2023 | Us-Mexico Border Philanthropy Partnership | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | California Cable & Telecommunications Association | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | The Quad Preparatory School | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Willits Hallowell Center Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2023 | The Trustees of Mount Holyoke College | 990 | Trustee | 2 | $0 | $0 | View return |
| 2023 | Scholars at Risk Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Alfred P Sloan Foundation | 990PF | Trustee/President | 40 | $1,132,675 | $84,000 | View return |
| 2022 | Options Counseling Services of Oregon | 990 | Chief Information Officer | 40 | $124,543 | $0 | View return |
| 2022 | California Cable & Telecommunications Association | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Willits Hallowell Center Inc. | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2022 | The Quad Preparatory School | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | The Trustees of Mount Holyoke College | 990 | Trustee | 2.5 | $0 | $0 | View return |
| 2021 | Alfred P Sloan Foundation | 990PF | Trustee/President | 40 | $1,084,775 | $80,450 | View return |
| 2021 | Options Counseling Services of Oregon | 990 | Chief Information Officer | 40 | $107,232 | $0 | View return |
| 2021 | The Quad Preparatory School | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Alfred P Sloan Foundation | 990PF | Trustee/President | 40 | $1,052,777 | $79,099 | View return |
| 2020 | Options Counseling Services of Oregon | 990 | CIO | 40 | $106,373 | $0 | View return |
| 2020 | The Quad Preparatory School | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Alfred P Sloan Foundation | 990PF | Trustee/President | 40 | $1,016,025 | $77,265 | View return |
| 2019 | Options Counseling Services of Oregon | 990 | Chief Information Officer | 40 | $106,921 | $0 | View return |
| 2017 | Williams College | 990 | President | 40 | $648,610 | $0 | View return |
| 2017 | New England Small College Athletic Conference | 990 | 7/1/17-12/31/17 | 1 | $0 | $0 | View return |
| 2016 | Williams College | 990 | President | 40 | $642,887 | $0 | View return |
| 2016 | Williamstown Theatre Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | New England Small College Athletic Conference | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Sterling and Francine Clark Art Institute | 990 | Ex Officio | 1 | $0 | $0 | View return |
| 2015 | Williams College | 990 | President | 40 | $640,643 | $0 | View return |
| 2015 | New England Cable & Telecommunications Association Inc | 990 | Director (Thru June 2015) | 1 | $0 | $0 | View return |
| 2015 | Williamstown Theatre Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | Sterling and Francine Clark Art Institute | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | New England Small College Athletic Conference | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Massachusetts Museum of Contemporary Art Foundation Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Williams College | 990 | President | 40 | $600,508 | $0 | View return |
| 2014 | New England Cable & Telecommunications Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Williamstown Theatre Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | New England Small College Athletic Conference | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Massachusetts Museum of Contemporary Art Foundation Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Sterling and Francine Clark Art Institute | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Williams College | 990 | President | 40 | $496,678 | $0 | View return |
| 2013 | New England Cable & Telecommunications Association Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Williamstown Theatre Foundation Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | New England Small College Athletic Conference | 990 | Director | 1 | $0 | $0 | View return |
| 2013 | Massachusetts Museum of Contemporary Art Foundation Inc. | 990 | Director | 2 | $0 | $0 | View return |
| 2013 | Sterling and Francine Clark Art Institute | 990 | Trustee | 1 | $0 | $0 | View return |