Continuing its acquisition spree in the Dallas area, BOK Financial Corp. announced Monday that it has a deal to buy Swiss Avenue Bank for an undisclosed amount of cash.

Swiss Avenue, a $224 million-asset bank established in 1974, offers private banking services to medical professionals in addition to small- business and commercial real estate lending.

BOK Financial said the transaction, combined with two deals announced last week, would boost its assets in Greater Dallas by 43%, to nearly $1 billion. The $6.8 billion-asset company also has deals pending to buy Canyon Creek National Bank in Richardson, Tex., and Mid-Cities National Bank in Hurst, Tex.

All three banks would be merged into Bank of Texas, a BOK Financial subsidiary. The deals are expected to close in the second quarter.

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