Note 2: Acquisition

On April 30, 2010, the Corporation acquired 100% of OAK for total consideration of $83.7 million. The total consideration consisted of the issuance of 3,529,772 shares of Chemical common stock with a total value of $83.7 million based upon a price per share of the Corporation’s common stock of $23.70 at the acquisition date, the exchange of 26,425 vested stock options for the outstanding vested stock options of OAK with a value of the exchange at the acquisition date of approximately $41,000 and approximately $8,000 of cash in lieu of fractional shares. The issuance of 3,529,772 shares of Chemical common stock was based on an exchange rate of 1.306 times the 2,703,009 outstanding shares of OAK at the acquisition date. There were no contingencies resulting from the acquisition.

OAK, a bank holding company, owned Byron Bank, which provided traditional commercial banking services and products through 14 banking offices serving communities in Ottawa, Allegan and Kent counties in west Michigan. Byron Bank was consolidated with and into Chemical Bank on July 23, 2010. At the acquisition date, OAK had total assets of $820 million, including total loans of $627 million, and total deposits of $693 million, including brokered deposits of $193 million.

Upon acquisition, the OAK loan portfolio had contractually required principal and interest payments receivable of $683 million and $97 million, respectively, expected principal and interest cash flows of $636 million and $88 million, respectively, and a fair value of $627 million. The difference between the contractually required payments receivable and the expected cash flows represents the nonaccretable difference, which totaled $56 million at the acquisition date, with $47 million attributable to expected credit losses. The difference between the expected cash flows and fair value represents the accretable yield, which totaled $97 million at the acquisition date. The outstanding contractual principal balance and the carrying amount of the acquired loan portfolio were $565 million and $523 million, respectively, at June 30, 2011, compared to $597 million and $552 million, respectively, at December 31, 2010 and $665 million and $613 million, respectively, at June 30, 2010, and there was no related allowance for loan losses at those dates.

Activity for the accretable yield, which includes contractually due interest, of acquired loans follows:


	Accretable Yield
	(In thousands)
Balance at January 1, 2011	$	72,863
Additions		—
Reductions		—
Accretion recognized in interest income		(17,098	)
Reclassification from (to) nonaccretable difference		—

Balance at June 30, 2011	$	55,765