The Facebook CEO, whose company went public on Friday, has also updated his status to “married.”
The fewer than 100 celebrants that gathered in Zuckerberg’s backyard believed it was a party for Chan, who graduated from the University of California, San Francisco’s medical school on Monday.
Instead, they were surprised to find it was a wedding for the couple who met at Harvard and have been together for more than nine years.
A Facebook spokeswoman said Zuckerberg designed the ring himself, and that it featured “a very simple ruby.”
