HireRight Inc. (NASD: HIRE) said Monday its shareholders approved the proposed sale to US Investigations Services LLC (USIS). Shareholders will receive $19.75 per share in the deal, valuing the transaction at around $227.9 million.

Irvine CA-based HireRight provides pre-employment background checks and drug tests. USIS provides background checks and drug screen, and was part of a U.S. government agency before its privatization. Today the Fall Church VA-based company is owned by Providence Equity Partners.