Dallas Wilson, a senior manager at Countdown Dunedin Central, was on duty on the afternoon of Monday, May 10, when a man came in and started to stab staff and shoppers.
Mr Wilson was stabbed four times and rushed to Dunedin Hospital in a critical condition.
A female staff member was also stabbed as well as an off-duty Corrections officer and his wife.
All four underwent emergency surgery.
Mr Wilson was discharged from hospital on Monday.
Three people have now been discharged from hospital.
The fourth person remains in Dunedin hospital and is progressing well on a general ward.
A man has been charged with four counts of attempted murder and was remanded in custody after appearing in the Dunedin District Court the day after the attack.
Mr Wilson said he could not speak about the specifics of the incident as it was before the courts but he wanted to share his story and thank New Zealand for the support he had received.
"All the details I remember about the incident itself are with the police, backed up with CCTV footage," he said.
"It was a random attack. The victims did not know the man."
Mr Wilson, who has two young sons, said he was expected to make a full recovery within about six weeks.
"Surgery went really well and there were no complications," he said.
"Fortunately all wounds narrowly missed any vital organs," Mr Wilson said.
He said the incident came out of the blue.
"There was so many people at the scene putting themselves at risk," he said.
"It all just happened very quickly and I was just grateful that he got apprehended not long after he attacked me.
"I’d like to thank everyone who helped me and others at the scene and the support of police, St John and medical staff until my release from hospital on Monday."
Mr Wilson was now recovering at home and appreciated all the messages and well wishes.
"Recovery is coming along — I picked up pneumonia in hospital late last week but the medical team were more than happy with the progression of the stab wounds and hopefully I will be pain-free soon enough."
The alleged offender has interim name suppression
and will appear again in court next month.
The other three victims did not want to speak about their own experience but earlier this week, via police, thanked the public for supporting them.
Mr Wilson said he hoped everyone injured that terrible afternoon would make a full recovery.
"And thanks for intervening," he passed on to them.
The supermarket reopened several days after the attack and
a security guard remains at the main entrance during opening hours.
