At Apple, the topic of succession planning is becoming increasingly pressing. While CEO Tim Cook has not signaled any immediate plans to step down, there is growing speculation about his eventual departure and the selection of his successor. Cook, set to turn 65 next year, is older than most S&P 500 CEOs and has been with Apple for 25 years. The potential pool for his replacement, primarily drawn from Apple's current executive team, faces its own challenges; most of these executives are around 60 years old.