Weis Markets, Inc. is a Mid-Atlantic food retailer based in Sunbury, Pennsylvania, It currently operates 197 stores with over 23,000 employees in Pennsylvania, Maryland, New York, New Jersey, West Virginia, Virginia, and Delaware. Weis Markets was founded in 1912 by two brothers, Harry and Sigmund Weis, as Weis Pure Foods. The company has grown significantly since then, and in 2020, it was ranked 150th on the Fortune 500 list of the largest United States corporations by revenue.