Also. . .

* Western Bancorp said it agreed to buy PNB Financial Group Inc. for about $74.2 million in stock. Western said it will exchange one share of its stock for each share of PNB. Western plans to combine PNB’s Pacific National Bank unit with its Southern California Bank unit. Both banks are based in Newport Beach.

* Thomas & Betts Corp., which produces connectors and components for the electronics market, said it plans to buy Van Nuys-based Ocal Inc. for $20.3 million. Ocal stockholders will receive $3.54 in cash for each share of common stock in Ocal, which makes polyvinyl-chloride-coated conduits and components.

* Irvine-based Fluor Corp., one of the world’s largest construction and engineering companies, ended its plan to spin off or sell its American Equipment leasing unit because of a “substantial” change in terms by the top bidder. It also cited changes in market conditions as a factor in its decision. It declined to name the top bidder. The company also said it bought back 8.3 million shares for about $375 million in anticipation of selling the unit, one of the five biggest U.S. suppliers of construction and mining equipment.