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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1414475	Western Gas Partners Lp	WES	Natural Gas Transmission (4922)	261075808

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1223756	R Anthony Chase	1201 Lake Robbins Drive The Woodlands TX 77380		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Units Representing Limited Partnership Interests	Disposition	2012-11-13	13,200	$48.57	15,512	No	4	S	Direct
Common Units Representing Limited Partnership Interests	Disposition	2012-11-13	1,800	$49.29	13,712	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Footnotes

This transaction was executed in multiple trades at prices ranging from $48.11 to $49.11. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of units and prices at which the transaction was effected.
This transaction was executed in multiple trades at prices ranging from $49.14 to $49.43. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of units and prices at which the transaction was effected.