4. STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Apr. 30, 2018

Preferred Stock

Schedule of preferred stock dividends

Declaration Date	Record Date	Payment Date	Dividends Paid		Dividend Per Share
Fiscal Year 2016
6/5/2015	6/19/2015	7/1/2015	$	1,034,000	$	0.65625
9/8/2015	9/18/2015	10/1/2015	$	1,035,000	$	0.65625
12/7/2015	12/18/2015	1/4/2016	$	1,035,000	$	0.65625
3/7/2016	3/18/2016	4/1/2016	$	1,035,000	$	0.65625
			$	4,139,000	$	2.62500
Fiscal Year 2017
6/2/2016	6/17/2016	7/1/2016	$	1,036,000	$	0.65625
9/6/2016	9/16/2016	10/3/2016	$	1,081,000	$	0.65625
12/6/2016	12/16/2016	1/3/2017	$	1,081,000	$	0.65625
3/9/2017	3/20/2017	4/3/2017	$	1,081,000	$	0.65625
			$	4,279,000	$	2.62500
Fiscal Year 2018
6/6/2017	6/19/2017	7/3/2017	$	1,081,000	$	0.65625
9/5/2017	9/18/2017	10/2/2017	$	1,081,000	$	0.65625
12/7/2017	12/18/2017	1/2/2018	$	1,081,000	$	0.65625
3/7/2018	3/19/2018	4/2/2018	$	1,082,000	$	0.65625
			$	4,325,000	$	2.62500

Common Stock

Schedule of stock issued under financing transactions

Description of Financing Transaction	Shares of Common Stock Issued		Gross Proceeds Raised
Fiscal Year 2016
At Market Issuance Sales Agreement dated June 13, 2014		1,232,821	$	11,456,000
At Market Issuance Sales Agreement dated August 7, 2015		964,523	$	7,447,000
Equity Distribution Agreement dated August 7, 2015		1,210,328	$	6,969,000
Common Stock Purchase Agreement dated October 30, 2015		2,645,503	$	20,000,000
		6,053,175	$	45,872,000
Fiscal Year 2017
At Market Issuance Sales Agreement dated August 7, 2015		6,137,403	$	18,246,000
Equity Distribution Agreement dated August 7, 2015		3,750,323	$	13,031,000
		9,887,726	$	31,277,000
Fiscal Year 2018
At Market Issuance Sales Agreement dated August 7, 2015		1,051,259	$	4,304,000
Public Offering dated on February 14, 2018		10,294,445	$	23,163,000
		11,345,704	$	27,467,000