Zuckerberg, sporting jeans and a sweatshirt, arrived at a Sheraton hotel in midtown Manhattan around 1 p.m. Monday , according to a report from MSNBC.com. CFO David Ebersman, wearing a more traditional suit and tie, also was on hand for the company's appearance.

The report also said that a long line of investors stood outside the Sheraton for about an hour, waiting to get in and hear the social network's pitch about the strength of its business and vision.

The nine-day roadshow is said to include stops in New York, Boston, San Francisco, Chicago, Baltimore and possibly Los Angeles.

Despite a , two recent hefty deals -- for and to buy former from Microsoft -- as well as disappointing , interest in Facebook's IPO remains strong. Susquehanna Financial Group analyst Herman Leung said in a note to investors Monday that he expects Facebook's revenue to grow 40% this year and 33% in 2013, MSNBC reported.

Most reports agree that Facebook's initial public offering will launch May 18. Facebook has not announced a date.