1
|
NAME OF REPORTING PERSON
Accipiter Life Sciences Fund, LP
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS
WC
|
||
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
|
||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE VOTING POWER
236,648
|
|
8
|
SHARED VOTING POWER
- 0 -
|
||
9
|
SOLE DISPOSITIVE POWER
236,648
|
||
10
|
SHARED DISPOSITIVE POWER
- 0 -
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
236,648
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
|
||
14
|
TYPE OF REPORTING PERSON
PN
|
1
|
NAME OF REPORTING PERSON
Accipiter Life Sciences Fund (Offshore), Ltd.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS
WC
|
||
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
CAYMAN ISLANDS
|
||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE VOTING POWER
1,525,664
|
|
8
|
SHARED VOTING POWER
- 0 -
|
||
9
|
SOLE DISPOSITIVE POWER
1,525,664
|
||
10
|
SHARED DISPOSITIVE POWER
- 0 -
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,525,664
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
6.1%
|
||
14
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Candens Capital, LLC
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS
AF
|
||
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
|
||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE VOTING POWER
236,648
|
|
8
|
SHARED VOTING POWER
- 0 -
|
||
9
|
SOLE DISPOSITIVE POWER
236,648
|
||
10
|
SHARED DISPOSITIVE POWER
- 0 -
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
236,648
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 1%
|
||
14
|
TYPE OF REPORTING PERSON
OO
|
1
|
NAME OF REPORTING PERSON
Accipiter Capital Management, LLC
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS
AF
|
||
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
DELAWARE
|
||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE VOTING POWER
1,762,312
|
|
8
|
SHARED VOTING POWER
- 0 -
|
||
9
|
SOLE DISPOSITIVE POWER
1,762,312
|
||
10
|
SHARED DISPOSITIVE POWER
- 0 -
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,762,312
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
7.0%
|
||
14
|
TYPE OF REPORTING PERSON
OO
|
1
|
NAME OF REPORTING PERSON
Gabe Hoffman
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
|
(a) o
(b) o
|
|
3
|
SEC USE ONLY
|
||
4
|
SOURCE OF FUNDS
AF
|
||
5
|
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)
|
¨
|
|
6
|
CITIZENSHIP OR PLACE OF ORGANIZATION
USA
|
||
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
|
7
|
SOLE VOTING POWER
1,762,312
|
|
8
|
SHARED VOTING POWER
- 0 -
|
||
9
|
SOLE DISPOSITIVE POWER
1,762,312
|
||
10
|
SHARED DISPOSITIVE POWER
- 0 -
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,762,312
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
7.0%
|
||
14
|
TYPE OF REPORTING PERSON
IN
|
Item 3.
|
Source and Amount of Funds or Other Consideration.
|
Item 5.
|
Interest in Securities of the Issuer.
|
Dated: November 27, 2013
|
ACCIPITER LIFE SCIENCES FUND, LP
|
|
By:
|
Candens Capital, LLC
its general partner
|
|
By:
|
/s/ Gabe Hoffman
|
|
Gabe Hoffman, Managing Member
|
ACCIPITER LIFE SCIENCES FUND (OFFSHORE), LTD.
|
||
By:
|
Accipiter Capital Management, LLC
its investment manager
|
|
By:
|
/s/ Gabe Hoffman
|
|
Gabe Hoffman, Managing Member
|
ACCIPITER CAPITAL MANAGEMENT, LLC
|
||
By:
|
/s/ Gabe Hoffman
|
|
Gabe Hoffman, Managing Member
|
CANDENS CAPITAL, LLC
|
||
By:
|
/s/ Gabe Hoffman
|
|
Gabe Hoffman, Managing Member
|
/s/ Gabe Hoffman
|
|
GABE HOFFMAN
|
Shares of Common
Stock Purchased/(Sold)
|
Price Per
Share($)
|
Date of
Transaction
|
(6,415)
|
18.0900
|
11/06/2013
|
|
(367)
|
19.1283
|
11/14/2013
|
|
(225)
|
19.1004
|
11/14/2013
|
|
(48)
|
19.0921
|
11/15/2013
|
|
(24,000)
|
19.0497
|
11/15/2013
|
|
(781)
|
19.4960
|
11/25/2013
|
|
(2,064)
|
19.4821
|
11/25/2013
|
|
(93,359)
|
19.3981
|
11/25/2013
|
|
(3,778)
|
19.4992
|
11/25/2013
|
(2,073)
|
19.1283
|
11/14/2013
|
|
(1,275)
|
19.1004
|
11/14/2013
|
|
(152)
|
19.0921
|
11/15/2013
|
|
(76,000)
|
19.0497
|
11/15/2013
|
|
(2,472)
|
19.4960
|
11/25/2013
|
|
(6,536)
|
19.4821
|
11/25/2013
|
|
(295,641)
|
19.3981
|
11/25/2013
|
|
(11,962)
|
19.4992
|
11/25/2013
|