Arvest Bank Closes Deal to Buy Union Bank of Kansas City by Rob Keys Posted 6/26/2012 11:23 am Updated 6 years ago Arvest Bank completes its purchase of Union Bank of Kansas City, announced in January. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.