13G Filing: Partner Fund Management and Portola Pharmaceuticals Inc (PTLA)

Page 3 of 13

Page 3 of 13 – SEC Filing

CUSIP
No.
737010108
13G Page
3 of 13 Pages

1.

NAME OF REPORTING PERSON

S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

Partner Fund Management GP, LLC

2.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)      ¨

(b)     x

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

 

3,230,997 shares

7.

SOLE DISPOSITIVE POWER

0

8.

SHARED DISPOSITIVE POWER

See Row 6 above

9.

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

See Row 6 above

10.

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

¨

11.

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

5.7%

12.

TYPE OF REPORTING PERSON

OO

Follow Portola Pharmaceuticals Inc (NASDAQ:PTLA)

Page 3 of 13