PALO ALTO, CALIF. — Facebook founder and CEO Mark Zuckerberg updated his status to “married” on Saturday.
Zuckerberg and 27-year-old Priscilla Chan tied the knot at a small ceremony at his Palo Alto, Calif., home, capping a busy week for the couple.

Zuckerberg took his company public in one of the most anticipated stock offerings in Wall Street history Friday. And Chan graduated from medical school at the University of California, San Francisco, on Monday, the same day Zuckerberg turned 28.

The couple met at Harvard and have been together for more than nine years.

The ceremony came after Facebook raised $16 billion in the largest initial public offering on record for a technology company.
Facebook shares rose 0.6 percent to $38.23 as of 4 p.m. in New York on May 18 after earlier trading at the IPO price of $38, which valued the company at $104.2 billion.

Zuckerberg’s net worth rose $100 million to $19.4 billion, ranking him 26th on the Bloomberg Billionaires Index, ahead of Google Inc.’s Sergey Brin and Larry Page.

The Facebook photograph shows Zuckerberg in a suit rather than his trademark hoodie, and Chan in a white wedding dress.

A source authorized by the couple to speak said Zuckerberg designed the ring featuring “a very simple ruby.”

The ceremony took place in Zuckerberg’s backyard before fewer than 100 guests, who all thought they were there to celebrate Chan’s graduation.

“Everybody was shocked,” the guest said.

Rather than his trademark hoodie, Zuckerberg wore a suit for the ceremony, while his bride wore a traditional wedding dress.

Food was served family-style and included dishes from the couple’s favorite Palo Alto sushi restaurant. The two had been planning the marriage for months but were waiting until Chan had graduated to hold the wedding, the guest said.

The timing wasn’t tied to the IPO, since the date the company planned to go public was a “moving target,” the guest said.

Even after the IPO, Zuckerberg remains Facebook’s single largest shareholder, with 503.6 million shares. And he controls the company with 56 percent of its voting stock.

The site, which was born in a dorm room eight years ago, has grown into a worldwide network of almost a billion people.

Zuckerberg founded Facebook at Harvard in 2004.

He was named as Time’s Person of the Year in 2010, at age 26.

Zuckerberg grew up in Dobbs Ferry, N.Y

(Bloomberg contributed to this report.)