Pennsylvania Real Estate Investment Trust continued to operate its malls during bankruptcy. When it filed bankruptcy, PREIT listed as having $2.4 billion in assets and total debt of just over $2 billion. Of its debt, $913 million is an unsecured loan it has with Wells Fargo, which is its largest creditor.
https://www.bizjournals.com/philadelphia/news/2020/11/30/bankruptcy-court-approves-preits-reorganization.html