| Organization | Howie Lempel | Holden Karnofsky |
|---|---|---|
| GiveWell | Program Officer, Global Catastrophic Risks (2015-02-27–2016-09-01); Research Analyst (2013-08-28–2015-02-27) | 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–); Board Secretary (2008-01-04–2011-07-25); Co-Executive Director (2011-08-05–2017-06-01) |
| Open Philanthropy | Program Officer, Global Catastrophic Risks (2016-01-11–2017-03-09) | 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–) |
| Title | Publication date | Author | Publisher | Affected organizations | Affected people | Document scope | Cause area | Notes |
|---|