£
|
Rule
13d-1(b)
|
þ
|
Rule
13d-1(c)
|
£
|
Rule
13d-1(d)
|
|
CUSIP
NO. 86837X105
|
13G
A/1
|
|
||||||
1
|
NAME
OF REPORTING PERSON
S.S.
or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
|
DIAMONDBACK
HOLDINGS, LLC
|
||||||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) o
(b) o
|
|||||||
3
|
SEC
USE ONLY
|
|||||||
4
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
|
Delaware
|
||||||
NUMBER
OF
SHARES
BENEFICIALLY
OWNED
BY
EACH
REPORTING
PERSON
WITH
|
5
|
SOLE
VOTING POWER
|
0
|
|||||
6
|
SHARED
VOTING POWER
|
1,240,000
|
||||||
7
|
SOLE
DISPOSITIVE POWER
|
0
|
||||||
8
|
SHARED
DISPOSITIVE POWER
|
1,240,000
|
||||||
9
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
|
*1,240,000
|
||||||
*upon
conversion of 31,000 shares of Series A Preferred
Stock.
|
||||||||
10
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAINSHARES
o
|
|||||||
11
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW
|
3.87%
|
||||||
12
|
TYPE
OF REPORTING PERSON
|
OO
|
|
CUSIP
NO. 86837X105
|
13G
A/1
|
|
||||||
1
|
NAME
OF REPORTING PERSON
S.S.
or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
|
WEXFORD
CAPITAL LP
|
||||||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) o
(b) o
|
|||||||
3
|
SEC
USE ONLY
|
|||||||
4
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
|
Delaware
|
||||||
NUMBER
OF
SHARES
BENEFICIALLY
OWNED
BY
EACH
REPORTING
PERSON
WITH
|
5
|
SOLE
VOTING POWER
|
0
|
|||||
6
|
SHARED
VOTING POWER
|
1,240,000
|
||||||
7
|
SOLE
DISPOSITIVE POWER
|
0
|
||||||
8
|
SHARED
DISPOSITIVE POWER
|
1,240,000
|
||||||
9
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
|
*1,240,000
|
||||||
*upon
conversion of 31,000 shares of Series A Preferred
Stock.
|
||||||||
10
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAINSHARES
o
|
|||||||
11
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW
|
3.87%
|
||||||
12
|
TYPE
OF REPORTING PERSON
|
PN
|
|
CUSIP
NO. 86837X105
|
13G
A/1
|
|
||||||
1
|
NAME
OF REPORTING PERSON
S.S.
or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
|
WEXFORD
GP LLC
|
||||||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) o
(b) o
|
|||||||
3
|
SEC
USE ONLY
|
|||||||
4
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
|
Delaware
|
||||||
NUMBER
OF
SHARES
BENEFICIALLY
OWNED
BY
EACH
REPORTING
PERSON
WITH
|
5
|
SOLE
VOTING POWER
|
0
|
|||||
6
|
SHARED
VOTING POWER
|
1,240,000
|
||||||
7
|
SOLE
DISPOSITIVE POWER
|
0
|
||||||
8
|
SHARED
DISPOSITIVE POWER
|
1,240,000
|
||||||
9
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
|
*1,240,000
|
||||||
*upon
conversion of 31,000 shares of Series A Preferred
Stock.
|
||||||||
10
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAINSHARES
o
|
|||||||
11
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW
|
3.87%
|
||||||
12
|
TYPE
OF REPORTING PERSON
|
OO
|
|
CUSIP
NO. 86837X105
|
13G
A/1
|
|
||||||
1
|
NAME
OF REPORTING PERSON
S.S.
or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
|
CHARLES
E. DAVIDSON
|
||||||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) o
(b) o
|
|||||||
3
|
SEC
USE ONLY
|
|||||||
4
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
|
United
States
|
||||||
NUMBER
OF
SHARES
BENEFICIALLY
OWNED
BY
EACH
REPORTING
PERSON
WITH
|
5
|
SOLE
VOTING POWER
|
0
|
|||||
6
|
SHARED
VOTING POWER
|
1,240,000
|
||||||
7
|
SOLE
DISPOSITIVE POWER
|
0
|
||||||
8
|
SHARED
DISPOSITIVE POWER
|
1,240,000
|
||||||
9
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
|
*1,240,000
|
||||||
*upon
conversion of 31,000 shares of Series A Preferred
Stock.
|
||||||||
10
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAINSHARES
o
|
|||||||
11
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW
|
3.87%
|
||||||
12
|
TYPE
OF REPORTING PERSON
|
IN
|
|
CUSIP
NO. 86837X105
|
13G
A/1
|
|
||||||
1
|
NAME
OF REPORTING PERSON
S.S.
or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
|
JOSEPH
M. JACOBS
|
||||||
2
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) o
(b) o
|
|||||||
3
|
SEC
USE ONLY
|
|||||||
4
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
|
United
States
|
||||||
NUMBER
OF
SHARES
BENEFICIALLY
OWNED
BY
EACH
REPORTING
PERSON
WITH
|
5
|
SOLE
VOTING POWER
|
0
|
|||||
6
|
SHARED
VOTING POWER
|
1,240,000
|
||||||
7
|
SOLE
DISPOSITIVE POWER
|
0
|
||||||
8
|
SHARED
DISPOSITIVE POWER
|
1,240,000
|
||||||
9
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
|
*1,240,000
|
||||||
*upon
conversion of 31,000 shares of Series A Preferred
Stock.
|
||||||||
10
|
CHECK
BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAINSHARES
o
|
|||||||
11
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW
|
3.87%
|
||||||
12
|
TYPE
OF REPORTING PERSON
|
IN
|
|
Item
4.
|
Ownership
|
Item 5.
|
Ownership of Five Percent or Less
of a Class
|
Item
10.
|
Certification
|
|
Date:
July 15, 2010
|
DIAMONDBACK
HOLDINGS, LLC
|
|
By:
|
/s/Arthur
H. Amron
|
|
Name:
|
Arthur
H. Amron
|
|
Title:
|
Vice
President and Assistant Secretary
|
|
WEXFORD
CAPITAL LP
|
||
By:
|
/s/
Arthur H. Amron
|
|
Name:
|
Arthur
H. Amron
|
|
Title :
|
Partner
and Secretary
|
|
WEXFORD
GP LLC
|
||
By:
|
/s/
Arthur H. Amron
|
|
Name:
|
Arthur
H. Amron
|
|
Title:
|
Vice
President and Assistant Secretary
|
|
/s/
Charles E.
Davidson
|
||
CHARLES
E. DAVIDSON
|
||
/s/
Joseph M.
Jacobs
|
||
JOSEPH
M. JACOBS
|
||