Getting married after Zuckerberg achieved such a high level of success probably made the couple at least consider a prenuptial agreement.
"If they had gotten married in college, it probably wouldn't have occurred to them," said Jennifer Saslaw, an attorney at Moradi Saslaw LLP in San Francisco.
Lawyers said there was no guarantee the couple signed an agreement, citing divorce cases involving wealthy people such as actor Mel Gibson and singer Paul McCartney who skipped prenups. But they say it is likely they did.
"In every single state, a wealthy person is better with a prenup," said Dailey. "I cannot comprehend Zuckerberg marrying without one."
Image: Recent activity lists "Mark listed FB on NASDAQ" in this image taken from Mark Zuckerberg's Facebook page on May 18, 2012.