Take context from the input text and decide on the accurate relationship between 'Facebook Inc' and 'Mark Zuckerberg' from the options provided.
Options: founded by, currency, product/material produced, position held

NEW YORK, July 24 (Reuters) - A federal appeals court on Friday said Facebook Inc officials including Chief Executive Mark Zuckerberg cannot be sued by shareholders who said the social media company concealed threats to its growth prospects before its May 2012 initial public offering.
founded by