Houston-based Archrock Partners has named Stephanie Hildebrandt as senior vice president and general counsel, effective Aug. 7. Archrock supplies natural gas contract compression services.

Hildebrandt joins a company that is under investigation by the U.S. Securities and Exchange Commission and the U.S. Department of Justice. According to its latest quarterly report to the SEC on Tuesday, Archrock is being investigated for “previously disclosed errors and possible irregularities at one of our former international operations,” that being Exterran Corp.

“We have been assisting Exterran Corp. in responding to a subpoena for documents related to the restatement of prior period consolidated and combined financial statements and related disclosures and compliance with the U.S. Foreign Corrupt Practices Act (FCPA), which are also being provided to [the DOJ] at its request,” the filing notes.