On Aug. 14, PostRock Energy Corp. received a notice from NASDAQ that it is not has not not maintained a minimum of $10 million in stockholders' equity, the company said Aug. 19.

PostRock’s common stock will continue to list and trade under the symbol "PSTR." But the company has until Sept. 28 to submit a plan to regain compliance equity requirement.

However, PostRock said it does not intend to submit a compliance plan, and expects to be delisted. Following the delisting, common stock will trade on the OTC market.

Oklahoma City-based PostRock Energy Corp. develops and produces oil and natural gas in Kansas and Oklahoma.