Dave Goldberg, CEO of SurveyMonkey and the husband of Facebook executive Sheryl Sandberg, has died, Facebook founder Mark Zuckerberg announced Saturday.

Goldberg's brother, Robert Goldberg, announced in his own Facebook post that David “passed away suddenly” Friday night. He is survived by his mother, two sons and wife Sheryl Sandberg, the chief operating officer at Facebook.

“Dave Goldberg was an amazing person and I am glad I got to know him,” Zuckerberg said in a Facebook post. “My thoughts and prayers are with Sheryl and her family. I hope friends will join me in celebrating his life by sharing your memories of Dave on his profile, as his brother Rob suggests.”

Goldberg's cause of death wasn't immediately released, though word of his death was met with an immediate outpouring of sadness from the technology industry. He founded Launch Media in 1994, an online music and media company that was acquired by Yahoo in 2001. Goldberg began as the CEO of SurveyMonkey in 2009.

“Dave's genius, courage and leadership were overshadowed only be his compassion, friendship and heart,” the company said in a statement, as quoted by Business Insider. “His greatest love was for his family. Our sympathy goes out to them and to all who were touched by this extraordinary man. We are all heartbroken.”