San Francisco: Facebook Inc. co-founder and chief executive officer Mark Zuckerberg said on Tuesday he and his wife would give 99 percent of their Facebook shares to charitable purposes, Xinhua reported.

Proceeds of the holdings by the couple, Mark Zuckerberg and Priscilla Chan, of the public listed US social network currently worth $45 billion and will be managed by a new organisation known as the Chan Zuckerberg Initiative. On his Facebook page, Zuckerberg posted "A letter to our daughter", who was born last week.