SAN FRANCISCO—Details of how tech executive Bob Lee came to be fatally stabbed in downtown San Francisco early Tuesday were scarce as friends and family continued to mourn the man they called brilliant and kind.
San Francisco police found Lee, 43, on the sidewalk in front of a condominium building with stab wounds shortly after 2:35 a.m. Tuesday. He was taken to a hospital, where he died. He leaves behind two children.
The neighborhood where the stabbing occurred is near the Embarcadero waterfront and full of tech offices, towering condominium buildings, and not much else late at night.
Lee is known for creating the widely used mobile payment service Cash App while working as chief technology officer of the payment company Square, now known as Block. He was the chief product officer for the cryptocurrency firm MobileCoin at the time of his death….