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
- 0 -
|
|
8
|
SHARED VOTING POWER
404,145
|
||
9
|
SOLE DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED DISPOSITIVE POWER
404,145
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
404,145
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
1.6%
|
||
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
- 0 -
|
|
8
|
SHARED VOTING POWER
2,020,109
|
||
9
|
SOLE DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED DISPOSITIVE POWER
2,020,109
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,020,109
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
8.1%
|
||
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
- 0 -
|
|
8
|
SHARED VOTING POWER
404,145
|
||
9
|
SOLE DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED DISPOSITIVE POWER
404,145
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
404,145
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
1.6%
|
||
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
- 0 -
|
|
8
|
SHARED VOTING POWER
2,424,254
|
||
9
|
SOLE DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED DISPOSITIVE POWER
2,424,254
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,424,254
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
9.7%
|
||
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
- 0 -
|
|
8
|
SHARED VOTING POWER
2,424,254
|
||
9
|
SOLE DISPOSITIVE POWER
- 0 -
|
||
10
|
SHARED DISPOSITIVE POWER
2,424,254
|
||
11
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,424,254
|
||
12
|
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
|
o
|
|
13
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
9.7%
|
||
14
|
TYPE OF REPORTING PERSON
IN
|
Item 1.
|
Security and Issuer.
|
Item 2.
|
Identity and Background.
|
Item 3.
|
Source and Amount of Funds or Other Consideration.
|
Item 4.
|
Purpose of Transaction.
|
Item 5.
|
Interest in Securities of the Issuer.
|
Item 6.
|
Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.
|
Item 7.
|
Material to be Filed as Exhibits.
|
|
99.1
|
Joint Filing and Solicitation Agreement by and among Accipiter Life Sciences Fund, LP, Accipiter Life Sciences Fund (Offshore), Ltd., Accipiter Capital Management, LLC, Candens Capital, LLC and Gabe Hoffman, dated May 28, 2013.
|
Dated: May 28, 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
|
Name and Position
|
Principal Occupation
|
Principal Business Address
|
||
Gabe Hoffman, Director
|
Managing member of Accipiter Capital Management, LLC, and Candens Capital, LLC
|
3801 PGA Boulevard
Suite 600
Palm Beach Gardens, Florida 33410
|
||
Tom Davis, Director
|
President and CEO of Meridian Fund Services Limited
|
c/o Meridian Fund Services Limited
73 Front Street Hamilton HM 12
P.O. Box HM 528 Hamilton HMCX
Bermuda
|
||
Cary Marr, Director
|
Corporate Governance
|
PO Box 30208
George Town, Cayman Islands KY1-1201
|
Shares of Common
Stock Purchased
|
Price Per
Share($)
|
Date of
Purchase
|
2,928
|
17.2801
|
03/21/2013
|
|
1,163
|
17.2571
|
03/21/2013
|
|
93
|
19.2581
|
05/01/2013
|
|
1,992
|
19.2605
|
05/01/2013
|
|
250,837
|
* |
18.2500
|
05/17/2013
|
6,133
|
18.2346
|
05/17/2013
|
8,899
|
17.2800
|
03/21/2013
|
|
3,537
|
17.2570
|
03/21/2013
|
|
71,302
|
17.7850
|
03/21/2013
|
|
771,642
|
* |
18.2500
|
05/17/2013
|
552,521
|
* |
18.2500
|
05/17/2013
|
18,867
|
18.2347
|
05/17/2013
|
|
8,269
|
18.5428
|
05/17/2013
|
|
175,140
|
18.3674
|
05/17/2013
|
|
25,000
|
18.3330
|
05/17/2013
|
|
15,000
|
18.3307
|
05/17/2013
|