Anthropic Long-Term Benefit Trust — key-event: Jason Matheny appointed founding trustee

NoteThe source directly confirms that Jason Matheny was appointed as a founding trustee of the Anthropic Long-Term Benefit Trust in September 2023. The source explicitly states under 'Meet the Initial Trustees': 'Jason Matheny: CEO of the RAND Corporation' and identifies him as one of five initial Trustees. The date matches the claim's 'as of 2023-09' specification. The footnote noting his later resignation in December 2023 does not contradict the claim about his appointment as of September 2023—it occurred after the claimed date.