Capital Stock and Additional Paid-in Capital

9 Months Ended

Sep. 30, 2012

Capital Stock and Additional Paid-in Capital

4. Capital Stock and Additional Paid-in Capital

The following details our equity transactions during the nine months ended September 30, 2012:

	Preferred Stock				Common Stock				Additional Paid-in Capital
	Shares		$		Shares		$		$
Balances, December 31, 2011		1,321,514	$	1,322		13,812,490	$	13,969	$	59,289,516
Exercise of stock options		—		—		179,270		179		64,321
Share-based compensation		—		—		—		—		1,411,672
Stock dividends to Carilion Clinic(1)		—		—		—		59		94,915
Issuance of common stock other (2)		—		—		14,091		14		19,986
Balances, September 30, 2012		1,321,514	$	1,322		14,005,851	$	14,221	$	60,880,410

(1) The stock dividends payable in connection with Carilion Clinic’s Series A Preferred Stock will be issued subsequent to September 30, 2012. For the period from January 12, 2010, the original issue date of the Series A Preferred Stock, through September 30, 2012, the Series A Preferred Stock issued to Carilion has accrued $583,070 in dividends. The accrued and unpaid dividends as of September 30, 2012 will be paid by the issuance of 215,410 shares of our common stock upon Carilion’s written request.

(2) Represents shares of common stock issued to one director in lieu of cash fees for committee chairmanship.