Personnel: Tom Henighan at Anthropic (Co-founder, Researcher)

Note: The source is Anthropic's company values and governance page. While it mentions that Anthropic has 'researchers, engineers, policy experts and operational leaders,' it does not list individual personnel by name. The only named individuals in the source are the Board of Directors (Dario Amodei, Daniela Amodei, Yasmin Razavi, Jay Kreps, Reed Hastings, Chris Liddell) and LTBT Trustees. Tom Henighan is not mentioned anywhere in this excerpt. To verify the claim about Tom Henighan's role, title, and start date, a different source (such as a personnel directory, LinkedIn profile, or press release) would be required.