Fundraising is not a CEO's endgame, but it's very similar to the day-to-day of CEO work: promoting the company to others; being the public face; communicating clearly, concisely, and effectively; making sure that the company 'works' in all the ways that matter.
All of these are 'soft skill' competencies that hackers tend to downplay. But you need someone who can do this and do it well.