PacWest Bancorp has acquired CU Bancorp in a transaction valued at approximately $705 million.

CU Bancorp, headquartered in Los Angeles, is the parent of California United Bank, which has branches in Thousand Oaks and Simi Valley. The bank has about $3 billion in assets and nine branches in Los Angeles, Orange, Ventura and San Bernardino counties.

California United Bank will be merged into Pacific Western Bank, a subsidiary of PacWest Bancorp. The transaction, which was approved by the PacWest and CU Bancorp boards of directors, is expected to close in the fourth quarter of 2017 and is subject to customary closing conditions, including obtaining approval by CU Bancorp’s shareholders and bank regulatory authorities.

The combined company would have approximately $25 billion in assets and 87 branches, prior to anticipated consolidations.

Under terms of the agreement, CU Bancorp shareholders will receive 0.5308 shares of PacWest common stock and $12.00 in cash for each share of CU Bancorp. Based on PacWest’s April 5, 2017 closing price of $51.72, the total value of the merger consideration is $39.45 per CU Bancorp share.