| 2024 | Mtg Research Inc | 990 | Director | 0.1 | $0 | $0 | View return |
| 2023 | Mtg Research Inc | 990 | Director | 0.1 | $0 | $0 | View return |
| 2023 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | Climate Policy Initiative Inc. | 990 | Secretary (Thru Jan 2023) | 1 | $0 | $0 | View return |
| 2022 | Climate Policy Initiative Inc. | 990 | Secretary | 1 | $0 | $0 | View return |
| 2022 | Jasper Ridge Charitable Fund | 990 | Director - Until 12/31/22 | 0.2 | $0 | $0 | View return |
| 2022 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2021 | Climate Policy Initiative Inc. | 990 | Secretary | 1 | $0 | $0 | View return |
| 2021 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2020 | The Bridgespan Group Inc. | 990 | Trustee (Until May 2020) | 1 | $0 | $0 | View return |
| 2019 | Impact Audit Partners Inc | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2019 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2019 | Chagrin Valley Jaycees Charitable Foundation | 990EZ | Director | 2 | $0 | $0 | View return |
| 2019 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | The Bridgespan Group Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The Bridgespan Group Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | Chagrin Valley Jaycees Charitable Foundation | 990EZ | Director | 2 | $0 | $0 | View return |
| 2018 | Security Council Report Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2018 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Impact Audit Partners Inc | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2018 | Creative Commons Corporation | 990 | Board Member (Thru 12/9/18) | 2 | $0 | $0 | View return |
| 2017 | Creative Commons Corporation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2017 | Bipartisan Policy Center Inc. | 990 | Director - Until 06/2017 | 1 | $0 | $0 | View return |
| 2017 | Impact Audit Partners Inc | 990 | Vice Chairman | 1 | $0 | $0 | View return |
| 2017 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2017 | Chagrin Valley Jaycees Charitable Foundation | 990EZ | Director | 2 | $0 | $0 | View return |
| 2017 | The Bridgespan Group Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2017 | Security Council Report Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2016 | Security Council Report Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Creative Commons Corporation | 990 | Board Member | 2 | $0 | $0 | View return |
| 2016 | Chagrin Valley Jaycees Charitable Foundation | 990EZ | Director | 2 | $0 | $0 | View return |
| 2016 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2015 | Security Council Report Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Behavioral Ideas Lab Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Climate Policy Initiative Inc. | 990PF | Board Member | 1 | $0 | $0 | View return |
| 2015 | Creative Commons Corporation | 990 | Chairman Of The Board | 5 | $0 | $0 | View return |
| 2015 | Jasper Ridge Charitable Fund | 990 | Director | 0.2 | $0 | $0 | View return |
| 2015 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Creative Commons Corporation | 990 | Chairman | 5 | $0 | $0 | View return |
| 2014 | Bipartisan Policy Center Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | Climate Policy Initiative Inc. | 990PF | Board Member | 1 | $0 | $0 | View return |
| 2014 | Security Council Report Inc. | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | The Bridgespan Group Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Creative Commons Corporation | 990 | Chairman | 5 | $0 | $0 | View return |
| 2013 | The Bridgespan Group Inc. | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | Security Council Report Inc. | 990 | Chair (Ended June 2013) | 1 | $0 | $0 | View return |
| 2012 | The William & Flora Hewlett Foundation | 990PF | President (Term Ended 8/2012) | 40 | $1,198,455 | $59,504 | View return |
| 2012 | The William & Flora Hewlett Foundation | 990PF | President (Term Ended 8/2012) | 40 | $1,198,455 | $59,504 | View return |
| 2012 | Climate Policy Initiative Inc. | 990PF | Board Member | 1 | $0 | $0 | View return |
| 2011 | The William & Flora Hewlett Foundation | 990PF | President | 40 | $617,762 | $128,937 | View return |
| 2010 | The William & Flora Hewlett Foundation | 990PF | President | 40 | $630,481 | $110,790 | View return |