Oasis Petroleum  (OAS) – Get Report shares slumped after the oil-and-gas fracking-services provider said it filed under Chapter 11 of U.S. bankruptcy law.

The stock recently traded at 21.67 cents, down 49%. It has lost 93% of its value this year.

“Due to historically low global energy demand and commodity prices, we determined that it is best for Oasis Petroleum to take decisive action to strengthen our liquidity and overcome the headwinds now challenging both our company and industry,” the Houston company’s chief executive, Thomas Nusz, said in a statement.

The company said it filed the Chapter 11 petition in U.S. Bankruptcy Court for the Southern District of Texas.

Oasis has entered a restructuring-support agreement with substantially all its lenders on its revolving-credit facility and holders of 52% of the face amount of its bonds regarding a comprehensive prepackaged restructuring, Oasis said in a statement.

Its lenders have