Berkshire Hathaway’s Board Is Old. Not All Investors Are Happy About That.

Warren Buffett lost his closest confidant when Charlie Munger died this week. But he has lost other advisers recently as well.

In the past two years, three other longtime Berkshire Hathaway directors died. All were in their 90s, and all had forged close ties to Buffett decades earlier. The board’s tenure and makeup have drawn scrutiny from some investors who say the group needs more changes.