Shareholders of Commercial Federal Corp., the parent company of Omaha-based Commercial Federal Bank, have approved its $1.36 billion merger with Bank of the West.

The deal is set to close Dec. 2.

BancWest Corp., whose principal subsidiaries are Bank of the West and First Hawaiian Bank, is the seventh-largest bank holding company operating in the western United States, with assets of $51.4 billion.

Commercial Federal is a $10.2 billion federal savings bank with branches in Nebraska, Iowa, Colorado, Kansas, Oklahoma, Missouri and Arizona. It has a branch in Lawrence.