| Organization | Holden Karnofsky | Howie Lempel |
|---|---|---|
| GiveWell | Co-Founder, Co-Executive Director (2006-08-01–2007-04-27); Co-Executive Director (2007-04-28–2008-01-03); Program Officer (2008-01-04–2008-01-04); Board Secretary (2008-01-04–2011-07-25); Co-Executive Director (2011-08-05–2017-06-01) | Program Officer, Global Catastrophic Risks (2015-02-27–2016-09-01); Research Analyst (2013-08-28–2015-02-27) |
| Open Philanthropy | Co-CEO (2021-06-01–); Project Lead (2014-08-01–2017-06-01); Chief Executive Officer (2017-06-01–2021-06-01); Co-CEO (2021-06-01–2023-07-01); Director of AI Strategy (2023-07-01–2024-04-01) | Program Officer (2016-01-11–2017-03-09); Senior Advisor & Interim Managing Director of Global Catastrophic Risks (2023-12-01–2024-11-01) |
| Title | Publication date | Author | Publisher | Affected organizations | Affected people | Document scope | Cause area | Notes |
|---|