Rex Energy Corp. has again received notice from Nasdaq that it is not in compliance with the listing standards of the Nasdaq Capital Market, putting the company in jeopardy of delisting if its plan to meet the exchange’s requirements is not accepted.

Rex disclosed in a U.S. Securities and Exchange Commission filing last week that it received the notice on Nov. 16. It comes about six months after the company regained compliance with the market following a similar notice.

Rex has until Jan. 2 to submit its plans for meeting Nasdaq’s requirements. If the exchange accepts the plan, the company could receive a 180-day extension to demonstrate compliance. If it isn’t accepted, and Rex does not request a hearing on the matter, the company could be delisted. For now, the notice has no effect on trading of the stock.

The Nasdaq Capital Market is for small-cap companies that aren’t prepared to take on the heavier listing standards of loftier exchanges. Companies can qualify for listing if they meet all the criteria of just one of three standards: the equity standard, the market value of listed securities standard and the total assets/total revenue standard.

Rex also received notice from Nasdaq in April 2016 that it was not in compliance and it had six months to regain compliance. Rex said it fell out of compliance again because reported stockholder equity at the end of September was below the $2.5 million requirement. The company also does not meet the other alternative market value and revenue standards.

Rex, an Appalachian pure-play, has grappled with a balance sheet restructuring for years. In January, the company announced a two-year plan to reduce debt and spend within cash flow next year. Since the 2014 commodities downturn, Rex has worked to execute a series of financial initiatives including noncore asset sales and entering two joint ventures.

While Rex beat production guidance in the third quarter and is on track to meet its year-end exit rate, the company reported a net loss through the first nine months of the year of $55.2 million (minus $5.60/share). That’s compared to a net loss of $41.4 million (minus $7.41) during the same time last year. The company’s stock has traded at a 52-week low of $1.70/share.