13G Filing: Partner Fund Management and Endologix Inc (ELGX)

1.

NAME OF REPORTING PERSONS

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) o

(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

5,278,282 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	o
11.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.4%
12.	TYPE OF REPORTING PERSON OO

Page 3 of 13 – SEC Filing

1.	NAME OF REPORTING PERSONS 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) o (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 5,278,282 shares
		7.	SOLE DISPOSITIVE POWER 0
		8.	SHARED DISPOSITIVE POWER See Row 6 above