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. The source explicitly states under 'Meet the Initial Trustees': 'Jason Matheny: CEO of the RAND Corporation' and the announcement date is September 19, 2023, which matches the claimed 'as of 2023-09' timeframe. The source also notes in a footnote that Matheny stepped down in December 2023, but the claim specifies the appointment as of September 2023, which is confirmed by the source.