Dave Goldberg reportedly died after exercising while on vacation

Dave Goldberg, the CEO of SurveyMonkey and Facebook COO Sheryl Sandberg's husband, died after collapsing at the gym in a private resort in Mexico on Friday, according to The New York Times.

The 47-year-old collapsed while exercising during a vacation with his family, and efforts to revive him at the gym and at a local hospital were unsuccessful, a person close to the family told The Times on Monday. Re/code's Peter Kafka also reported the same.

His brother Robert Goldberg announced his passing in a Facebook post on Friday, but just said it was unexpected, writing the following:

It's with incredible shock and sadness that I'm letting our friends and family know that my amazing brother, Dave Goldberg, beloved husband of Sheryl Sandberg, father of two wonderful children, and son of Paula Goldberg, passed away suddenly last night.

An official cause of death is still unknown to the public. SurveyMonkey also posted the following statement:

We are deeply saddened to announce that Dave Goldberg passed away suddenly last night.

Dave's genius, courage and leadership were overshadowed only by his compassion, friendship and heart.

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.

Goldberg's brother has asked that those who knew Dave post their memories with him and photos of him to his Facebook profile in lieu of donations. So far, the tech community has mourned his loss both on and off Facebook with beautiful tributes.