Massmart on Tuesday warned of a bigger annual loss, due to store damages and lost trading income suffered as a result of the July looting.
Thousands of striking workers at companies under Massmart will return to work after reaching an agreement over disputes.
Thousands of workers, disgruntled over low wages and changes to terms and conditions of employment, went on strike on Friday.
Massmart has assured customers that planned strike action will not interfere with their Black Friday shopping plans.
Workers will start an indefinite strike on Friday at all group companies owned by Walmart-led Massmart Holdings in South Africa.
With an explosion in online sales expected in South Africa in the coming decade, e-commerce is becoming core to the growth strategy of Walmart-owned Massmart.
Walmart-owned retail group Massmart has secured the acquisition of online shopping logistics firm OneCart after announcing in August that it was in talks to buy the company.
A trading update for the first half of the year from Massmart on Friday spooked investors who had been banking on a stronger recovery. Game is at the centre of the problems.
It is not yet clear just how extensive the destruction of particularly retail and warehouse property and the looting of stock in the unrest in KwaZulu-Natal and Gauteng was.
E-commerce was one bright spot in an otherwise mostly grim set of results from Walmart-owned retail group Massmart for the 2020 financial year ended 27 December.