Alexander & Baldwin, Inc. is buying the Oahu land assets of Kaneohe Ranch Company and Harold K.L. Castle Foundation for $373 million.  Kaneohe Ranch will sell its Oahu land holdings for $260 million, but continue to own and manage some Oahu properties and its mainland land assets.  It also includes most of Kailua's retail district. Harold K.L. Castle Foundation will sell all of its properties to A&B. The transactions are expected to close in late December.