The 78-year-old driver who hit them is out of the hospital.
Meanwhile, family members say the organs of the youngest victim, a 3-month-old baby, were donated.
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78-year old driver involved in fatal crash at SF West Portal bus stop no longer in police custody
The baby died of his injuries on Wednesday.
His parents and brother died last weekend. The victim's family is thanking the community for their support.
The family said in a statement "Diego and Matilde" were what one would call real "life enhancers -- the kind of people everyone loved to be around."
"We loved Diego, Matilde, Jaoquim, and Cau deeply and are sure the love they showed to their family and friends will serve as their legacy," the statement says in part.
Full statement here.