CUSIP
NO. 29264P203
|
|
|
1)
|
NAMES
OF REPORTING PERSONS:
FRAZIER
HEALTHCARE V, LP
|
|
2)
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE
INSTRUCTIONS):
|
|
(a) o
(b) o
|
|
|
3)
|
SEC
USE ONLY:
|
|
4)
|
SOURCE
OF FUNDS (SEE INSTRUCTIONS):
WC
|
|
5)
|
CHECK
IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR
2(e):
o
|
|
6)
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
Delaware
|
NUMBER
OF
SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH |
|
7)
8)
9)
10)
|
SOLE
VOTING POWER
0
SHARED
VOTING POWER
1,697,563
SOLE
DISPOSITIVE POWER
0
SHARED
DISPOSITIVE POWER
1,697,563
|
11)
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,697,563
|
12)
|
CHECK
IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
(SEE
INSTRUCTIONS):
o
|
13)
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW (11):
14.64%
|
14)
|
TYPE
OF REPORTING PERSON (SEE INSTRUCTIONS):
OO
|
CUSIP
NO. 29264P203
|
|
|
1)
|
NAMES
OF REPORTING PERSONS:
FHM
V, LP
|
|
2)
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE
INSTRUCTIONS):
|
|
(a) o
(b) o
|
|
|
3)
|
SEC
USE ONLY:
|
|
4)
|
SOURCE
OF FUNDS (SEE INSTRUCTIONS):
OO
|
|
5)
|
CHECK
IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR
2(e):
o
|
|
6)
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
Delaware
|
NUMBER
OF
SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH |
|
7)
8)
9)
10)
|
SOLE
VOTING POWER
0
SHARED
VOTING POWER
1,697,563
SOLE
DISPOSITIVE POWER
0
SHARED
DISPOSITIVE POWER
1,697,563
|
11)
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,697,563
|
12)
|
CHECK
IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
(SEE
INSTRUCTIONS):
o
|
13)
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW (11):
14.64%
|
14)
|
TYPE
OF REPORTING PERSON (SEE INSTRUCTIONS):
OO
|
CUSIP
NO. 29264P203
|
|
|
1)
|
NAMES
OF REPORTING PERSONS:
FHM
V, LLC
|
|
2)
|
CHECK
THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE
INSTRUCTIONS):
|
|
(a) o
(b) o
|
|
|
3)
|
SEC
USE ONLY:
|
|
4)
|
SOURCE
OF FUNDS (SEE INSTRUCTIONS):
OO
|
|
5)
|
CHECK
IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
ITEMS 2(d) OR
2(e):
o
|
|
6)
|
CITIZENSHIP
OR PLACE OF ORGANIZATION
Delaware
|
NUMBER
OF
SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH |
|
7)
8)
9)
10)
|
SOLE
VOTING POWER
0
SHARED
VOTING POWER
1,697,563
SOLE
DISPOSITIVE POWER
0
SHARED
DISPOSITIVE POWER
1,697,563
|
11)
|
AGGREGATE
AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,697,563
|
12)
|
CHECK
IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
(SEE
INSTRUCTIONS):
o
|
13)
|
PERCENT
OF CLASS REPRESENTED BY AMOUNT IN ROW (11):
14.64%
|
14)
|
TYPE
OF REPORTING PERSON (SEE INSTRUCTIONS):
OO
|
FRAZIER
HEALTHCARE V, LP
|
||
By:
|
FHM
V, LP, its General Partner
|
|
By:
|
FHM
V, LLC, its General Partner
|
|
By:
|
/s/
Thomas S. Hodge
|
|
Thomas
S. Hodge
|
||
Chief
Operating Officer
|
||
FHM
V, LP
|
||
By:
|
FHM
V, LLC, its General Partner
|
|
By:
|
/s/
Thomas S. Hodge
|
|
Thomas
S. Hodge
|
||
Chief
Operating Officer
|
||
FHM
V, LLC
|
||
By:
|
/s/
Thomas S. Hodge
|
|
Thomas
S. Hodge
|
||
Chief
Operating Officer
|
Date:
January 4, 2008
|
FRAZIER
HEALTHCARE V, LP
|
||
By:
|
FHM
V, LP, its General Partner
|
||
By:
|
FHM
V, LLC, its General Partner
|
||
By:
|
/s/
Thomas S. Hodge
|
||
Thomas
S. Hodge
|
|||
Chief
Operating Officer
|
|||
FHM
V, LP
|
|||
By:
|
FHM
V, LLC, its General Partner
|
||
By:
|
/s/
Thomas S. Hodge
|
||
Thomas
S. Hodge
|
|||
Chief
Operating Officer
|
|||
FHM
V, LLC
|
|||
By:
|
/s/
Thomas S. Hodge
|
||
Thomas
S. Hodge
|
|||
Chief
Operating Officer
|