5 Largest Privately Held Companies in America

4. Mars, Incorporated

Annual Revenue: $45 Billion

Mars, Incorporated is a leading global food company, popularly known for its iconic candy brands like M&M’s, Snickers, and Twix. Founded in 1911 by Frank C. Mars, the company has grown to become one of the largest privately-held companies in America. Mars, Incorporated has over 140,000 employees and an estimated annual revenue of $45 billion, as of 2022.