Williams tragically committed suicide at the age of 63.
Zak — whose mother is Robin’s first wife, Valerie Velardi —told the publication back in 2014 that he missed his dad all the time.
“I miss him all the time,” he said of the Mrs. Doubtfire star, in a December 2014 issue of the magazine.
Zak - who is a mental-health advocate, entrepreneur and Angel investor - also said “It’s through helping others that I’ve begun to heal”.
Congrats to the happy family!