O’Reilly’s is the product of Charles F. O’Reilly, the son of an Irish immigrant who left Ireland in the aftermath of the potato famine, and his son Charles H. O’Reilly. From one store in 1957, O’Reilly Auto Parts now sells aftermarket car parts in over 5,000 stores in 47 states. Under the leadership of CEO and co-president Greg Johnson, O’Reilly’s in August 2019 announced it was acquiring Mexican auto parts chain Mayasa.