Greek-American businessman John Catsimatidis has an estimated net worth of $3.4 billion as of April 2016, according to Forbes. Most of his net worth is derived from diverse sources which include supermarkets, oil and real estate.

He currently works for Gristedes Foods, the largest grocery chain which is based in Manhattan. He is the current chairman, chief executive officer, president and owner of the company. He also serves the same position in Red Apple Group, which is a real estate company that currently has $700 to $800 holdings. He is also the owner of the Manhattan-based newspaper, Hellenic Times. He also serves as the chief executive officer and chairman of the subsidiary of Red Apple Group, the United Refining Company. Red Apple Group also has interests in real estate and aviation.

John Catsimatidis was born on September 7, 1948 in Nisyros, Greece. After studying at Brooklyn Technical High School, he attended New York University where he took a degree in electrical engineering.