Western Gas Partners Lp

GRASSI INVESTMENT MANAGEMENT LLC

Report date

3/31/2014

Quarter

2014 Q1

Filed

4/30/2014

Shares

15,500

Value ($000)

1,026

Weight

0.2%

2013 Q3 - 2014 Q1 (3 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2014 Q1	4/30/2014	1,026	0.2%	15,500	3/31/2014
2013 Q4	4/30/2014	3,430	0.8%	55,600	12/31/2013
2013 Q3	4/30/2014	3,450	0.9%	57,375	9/30/2013