Facebook CEO Mark Zuckerberg shared a picture of himself with Instagram Co-founder and CEO Kevin Systrom on Monday. “On Easter 5 years ago, Kevin and I finalized our discussions for Instagram to join us. It's been amazing seeing Instagram flourish under his leadership. Working with Kevin has been one of the best decisions of my life”, wrote Zuckerberg in his Instagram post. Notably, Facebook had acquired the photo and video sharing platform Instagram for $1 billion in April 2012.