Exhibit 4

Schedule of Transactions

IRS Partnership No. 19, L.P.

Date	Number of Common Shares Bought/(Sold)		Price Per Common Share in $US
1/25/2012		2,500.00		$5.40
1/25/2012		2,000.00		$5.39
1/25/2012		1,900.00		$5.41
1/25/2012		1,900.00		$5.40
1/25/2012		1,500.00		$5.41
1/25/2012		1,500.00		$5.41
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.39
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		649		$5.40
1/25/2012		500		$5.40
1/25/2012		500		$5.37
1/25/2012		300		$5.40
1/25/2012		300		$5.39
1/25/2012		100		$5.39

1

IRS Partnership No. 19, L.P.

1/25/2012	21	$5.40
1/25/2012	-500	$5.40
1/25/2012	-300	$5.42
1/25/2012	-200	$5.41
1/25/2012	-100	$5.37
1/26/2012	-300	$5.44
1/27/2012	7,000.00	$5.43
1/27/2012	2,000.00	$5.45
1/27/2012	1,000.00	$5.43
1/27/2012	1,000.00	$5.43
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	1,000.00	$5.40
1/27/2012	700	$5.40
1/27/2012	500	$5.40
1/27/2012	-200	$5.37
1/30/2012	15,000.00	$5.45
1/30/2012	1,000.00	$5.43
1/30/2012	1,000.00	$5.43
1/30/2012	1,000.00	$5.43
1/30/2012	1,000.00	$5.40
1/30/2012	1,000.00	$5.40
1/30/2012	1,000.00	$5.40
1/30/2012	1,000.00	$5.40
1/30/2012	800	$5.40
1/30/2012	500	$5.44
1/30/2012	500	$5.40
1/30/2012	300	$5.40
1/30/2012	-300	$5.31
1/30/2012	300	$5.31
1/31/2012	4,000.00	$5.44
1/31/2012	3,500.00	$5.45
1/31/2012	3,500.00	$5.45
1/31/2012	3,000.00	$5.45
1/31/2012	2,700.00	$5.45
1/31/2012	2,500.00	$5.45

2

IRS Partnership No. 19, L.P.

1/31/2012	2,500.00	$5.45
1/31/2012	2,000.00	$5.45
1/31/2012	2,000.00	$5.45
1/31/2012	1,500.00	$5.45
1/31/2012	1,200.00	$5.45
1/31/2012	1,000.00	$5.45
1/31/2012	1,000.00	$5.44
1/31/2012	1,000.00	$5.40
1/31/2012	500	$5.45
1/31/2012	500	$5.45
1/31/2012	-200	$5.41
2/1/2012	2,300.00	$5.43
2/1/2012	1,200.00	$5.45
2/1/2012	1,000.00	$5.40
2/2/2012	29,690.00	$5.55
2/2/2012	9,800.00	$5.49
2/2/2012	200	$5.49
2/2/2012	1,500.00	$5.50
2/2/2012	54	$5.50
2/2/2012	700	$5.50
2/2/2012	346	$5.50
2/2/2012	1,454.00	$5.50
2/2/2012	46	$5.50
2/2/2012	1,000.00	$5.50
2/2/2012	500	$5.48
2/2/2012	203	$5.50
2/2/2012	210	$5.50
2/2/2012	200	$5.50
2/2/2012	87	$5.50
2/2/2012	797	$5.50
2/2/2012	103	$5.50
2/2/2012	800	$5.50
2/2/2012	10	$5.50
2/2/2012	290	$5.50
2/2/2012	1,300.00	$5.50
2/2/2012	1,100.00	$5.50
2/2/2012	300	$5.48
2/2/2012	200	$5.48
2/2/2012	800	$5.50
2/2/2012	500	$5.48
2/2/2012	400	$5.48
2/2/2012	1,000.00	$5.50
2/2/2012	400	$5.50

3

IRS Partnership No. 19, L.P.

2/2/2012	150	$5.50
2/2/2012	150	$5.50
2/2/2012	4,900.00	$5.50
2/2/2012	2,200.00	$5.50
2/2/2012	100	$5.49
2/2/2012	100	$5.49
2/2/2012	2,100.00	$5.48
2/2/2012	300	$5.49
2/2/2012	200	$5.48
2/2/2012	100	$5.48

4

The Leonetti/O’Connell Family Foundation

Date	Number of Common Shares Bought/(Sold)		Price Per Common Share in $US
1/25/2012		200		$5.34
1/25/2012		479		$5.40
1/25/2012		500		$5.40
1/25/2012		700		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		1,000.00		$5.40
1/25/2012		2,600.00		$5.40
1/30/2012		-500		$5.31
1/30/2012		-500		$5.41
1/30/2012		-300		$5.31
1/30/2012		-200		$5.38
1/30/2012		-200		$5.38
1/30/2012		-100		$5.42
1/30/2012		-100		$5.43
1/31/2012		-500		$5.40
2/1/2012		-400		$5.43
2/1/2012		-300		$5.45
2/1/2012		-200		$5.42
2/1/2012		-100		$5.37
2/1/2012		-100		$5.42
2/2/2012		-500		$5.45
2/2/2012		-200		$5.46
2/2/2012		-100		$5.50

5