A low profile man, he is the son of Henry Zegar, a subway contractor for the New York City Transit Authority and Lilian, a musical comedy performer and opera singer. He earned his degree in Bachelor of Arts in Science from Long Island University and got his masters from New York University with a degree in Computer Science. As one of the founders of Bloomberg LP, he was the one who wrote the software of the company while partnering with Michael Bloomberg, Thomas Secunda, and Duncan MacMillan. Thanks to Bloomberg’s rise of revenue, he is now back on track as being one of the richest men in the world.
Charles, after being widowed in 2001, was remarried to Merryl Snow, an administrative judge, who is also a signatory of the Gates/Buffett Giving Pledge. The couple are both active in their Zegar Family Foundation.