Mark Zuckerberg says he’s giving away 99% of his Facebook shares — worth $45 billion today

Mark Zuckerberg announced Tuesday that he’s giving away 99% of his Facebook shares — valued at $45 billion today —during his lifetime.
The Facebook CEO announced the news in a letter to his newborn daughter, Max.

Zuckerberg and his wife, Priscilla Chan, created the Chan Zuckerberg Initiative. Its mission mimics much of what Zuckerberg and Chan’s donations have focused on in the past: personalized learning, curing diseases, and connecting people.