| 2025 | Reffkin Foundation | 990PF | Asst Secretary/Asst Treasurer | 0.1 | $0 | $0 | View return |
| 2024 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2024 | Parker Institute for Cancer Immunotherapy | 990 | Treasurer & Director | 1 | $0 | $0 | View return |
| 2024 | The Whole Heart Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2024 | Preston-Werner Initiatives Inc | 990 | Treasurer/Co-Secretary/Director | 0.1 | $0 | $0 | View return |
| 2024 | Coefficient Giving Reserch | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2024 | Reffkin Foundation | 990PF | Asst Secretary/Asst Treasurer | 0.1 | $0 | $0 | View return |
| 2024 | Kevin and Nicole Systrom Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2024 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2024 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2024 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2024 | Preston-Werner Foundation | 990PF | CFO/Co-Secretary | 0.1 | $0 | $0 | View return |
| 2024 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2024 | 100 Dollar Hats | 990EZ | Secretary/Director | 1 | $0 | $0 | View return |
| 2024 | The Sommerfeldt Cohler Foundation | 990PF | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2024 | Siriwan Singhasiri and Kenneth Lin Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2024 | Coefficient Giving Advisors Inc. | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2024 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2023 | Preston-Werner Initiatives Inc | 990 | Treasurer/Secretary/Director | 0.1 | $0 | $0 | View return |
| 2023 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2023 | Kevin and Nicole Systrom Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2023 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2023 | The Sommerfeldt Cohler Foundation | 990PF | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2023 | 100 Dollar Hats | 990EZ | Secretary/Director | 1 | $0 | $0 | View return |
| 2023 | Reffkin Foundation | 990PF | Asst Secretary/Asst Treasurer | 0.1 | $0 | $0 | View return |
| 2023 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2023 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2023 | Siriwan Singhasiri and Kenneth Lin Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2023 | The Whole Heart Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2023 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2023 | Parker Institute for Cancer Immunotherapy | 990 | Treasurer & Director | 1 | $0 | $0 | View return |
| 2023 | Preston-Werner Foundation | 990PF | CFO/Co-Secretary | 0.1 | $0 | $0 | View return |
| 2023 | Coefficient Giving Reserch | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2022 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2022 | Preston-Werner Initiatives Inc | 990 | Treasurer/Secretary/Director | 0.1 | $0 | $0 | View return |
| 2022 | 100 Dollar Hats | 990EZ | Secretary/Director | 1 | $0 | $0 | View return |
| 2022 | Parker Institute for Cancer Immunotherapy | 990 | Treasurer & Director | 1 | $0 | $0 | View return |
| 2022 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2022 | Reffkin Foundation | 990PF | Asst Secretary/Asst Treasurer | 0.1 | $0 | $0 | View return |
| 2022 | The Sommerfeldt Cohler Foundation | 990PF | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2022 | Kevin and Nicole Systrom Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2022 | Siriwan Singhasiri and Kenneth Lin Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2022 | Preston-Werner Foundation | 990PF | CFO/Secretary | 0.1 | $0 | $0 | View return |
| 2022 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2022 | The Whole Heart Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2022 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2022 | Coefficient Giving Reserch | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2021 | Preston-Werner Foundation | 990PF | CFO/Secretary | 0.1 | $0 | $0 | View return |
| 2021 | Coefficient Giving Reserch | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2021 | Parker Institute for Cancer Immunotherapy | 990 | Treasurer & Director | 1 | $0 | $0 | View return |
| 2021 | The Whole Heart Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2021 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2021 | Reffkin Foundation | 990PF | Asst Secretary/Asst Treasurer | 0.1 | $0 | $0 | View return |
| 2021 | Preston-Werner Initiatives Inc | 990 | Treasurer/Secretary/Director | 0.1 | $0 | $0 | View return |
| 2021 | The Sommerfeldt Cohler Foundation | 990PF | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2021 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2021 | Kevin and Nicole Systrom Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2021 | Siriwan Singhasiri and Kenneth Lin Foundation | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2021 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2021 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2021 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2020 | Preston-Werner Foundation | 990PF | CFO/Secretary | 0.1 | $0 | $0 | View return |
| 2020 | Parker Institute for Cancer Immunotherapy | 990 | Treasurer & Director | 1 | $0 | $0 | View return |
| 2020 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2020 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2020 | Preston-Werner Initiatives Inc | 990 | Treasurer/Secretary/Director | 0.1 | $0 | $0 | View return |
| 2020 | The Sommerfeldt Cohler Foundation | 990PF | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2020 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2020 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2020 | The Whole Heart Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2020 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2019 | The Primary School - East Palo Alto | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2019 | Sanya Foundation | 990PF | Treasurer | 0.5 | $0 | $0 | View return |
| 2019 | Preston-Werner Foundation | 990PF | Chief Financial Officer | 0.1 | $0 | $0 | View return |
| 2019 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2019 | Preston-Werner Initiatives Inc | 990 | Treasurer/Secretary/Director | 0.1 | $0 | $0 | View return |
| 2019 | Coefficient Giving Reserch | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2019 | The Whole Heart Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2019 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2019 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2019 | Parker Institute for Cancer Immunotherapy | 990 | Secretary/Treasurer & Director | 1 | $0 | $0 | View return |
| 2019 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2019 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2018 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2018 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2018 | Parker Institute for Cancer Immunotherapy | 990 | Secretary/Treasurer & Director | 1 | $0 | $0 | View return |
| 2018 | Coefficient Giving Reserch | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2018 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2018 | The Primary School - East Palo Alto | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2018 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2018 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2018 | The Primary School Lab | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2018 | Pacific Atlantic Action Coalition | 990 | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2017 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2017 | Sean N Parker Foundation | 990PF | Secretary/Treasurer/Director | 0.5 | $0 | $0 | View return |
| 2017 | Parker Institute for Cancer Immunotherapy | 990 | Secretary/Treasurer & Director | 1 | $0 | $0 | View return |
| 2017 | The Primary School - East Palo Alto | 990 | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2017 | Start Small | 990PF | VP/Secretary/Treasurer | 1 | $0 | $0 | View return |
| 2017 | Open Philanthropy Action Fund C/O Apercen Partners LLC | 990 | Treasurer | 0.5 | $0 | $0 | View return |
| 2017 | Vogt Foundation C/O Apercen Partners LLC | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2017 | The Primary School Lab | 990 | Treasurer/Secretary | 0.5 | $0 | $0 | View return |
| 2017 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2016 | The Primary School - East Palo Alto | 990 | Treasurer / Secretary | 0.5 | $0 | $0 | View return |
| 2016 | Parker Institute for Cancer Immunotherapy | 990 | Secretary/Treasurer & Director | 1 | $0 | $0 | View return |
| 2016 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2016 | Start Small | 990PF | VP, Secretary, Treasurer, And Director | 1 | $0 | $0 | View return |
| 2016 | Breyer Family Foundation | 990PF | Secretary | 1 | $0 | $0 | View return |
| 2016 | Sean N Parker Foundation | 990PF | Secretary, Treasurer & Director | 0.5 | $0 | $0 | View return |
| 2016 | Good Ventures Foundation C/O Apercen Partners LLC | 990PF | Assistant Secretary | 1 | $0 | $0 | View return |
| 2016 | Chan Zuckerberg Biohub Inc. | 990 | Secretary (Thru 10/16) | 5 | $0 | $0 | View return |
| 2015 | Parker Institute for Cancer Immunotherapy | 990 | Secretary/Treasurer And Director | 1 | $0 | $0 | View return |
| 2015 | Aphorism Foundation C/O Realize CPA LLP | 990PF | Treasurer | 1 | $0 | $0 | View return |
| 2015 | Start Small | 990PF | VP, Secretary, Treasurer, And Director | 1 | $0 | $0 | View return |
| 2015 | Sean N Parker Foundation | 990PF | Secretary, Treasurer & Director | 0.5 | $0 | $0 | View return |
| 2014 | Aphorism Foundation C/O Realize CPA LLP | 990PF | Treasurer | 1 | $0 | $0 | View return |
| 2014 | Sean N Parker Foundation | 990PF | Secretary, Treasurer & Director | 0.5 | $0 | $0 | View return |
| 2013 | Sean N Parker Foundation | 990PF | Secretary, Treasurer & Director | 0.5 | $0 | $0 | View return |
| 2012 | Sean N Parker Foundation | 990PF | Secretary | 0.5 | $0 | $0 | View return |
| 2011 | Sean N Parker Foundation | 990PF | Secretary | 0.5 | $0 | $0 | View return |