The filing is "intended to provide Pier 1 with additional time and financial flexibility" as it looks for a buyer.
The company said it would continue to operate as it restructures $700 million in debt.
Mall operators Simon Property and Brookfield "have a stake in keeping the [bankrupt] fast-fashion retailer and mall staple running."
The company has also closed 38 locations as it struggles with declining mall traffic and a shift away from casual dining.
The prepacked Chapter 11 bankruptcy plan includes $2.8 billion in operating cash and elimination of more than $4.6 billion of debt.
Dean's bankruptcy is "a fresh setback to a U.S. dairy industry struggling against declining U.S. milk consumption and rising competition."
The shale oil startup cited "a historically challenging commodity price environment and a capital market that is highly constrained for energy companies."
The discount retailer has been reporting yearly losses since 2015.
Seemingly minor overseas issues can significantly affect a restructuring or distressed-sale transaction by a U.S. parent company.
The largest refinery on the U.S. East Coast was forced to file for bankruptcy protection after an explosion and fire last month.
The company is seeking to reduce a $1 billion debt burden resulting from acquisitions of the assets of distressed mining firms.
The company says its finances have wilted as the expected benefits from its $430 million acquisition of ProFlowers have not materialized.
