WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

WAFRA INC.'s Holding History (CIK: 0000920440)

Note: Option positions (PUT/CALL) are excluded.

Q2 2017

Shares 58,066 Value ($000) $3,845 Avg Close $55.73 Range $52.23 - $59.49

Q1 2017

Shares 64,701 Value ($000) $4,274 Avg Close $55.38 Range $49.25 - $59.68

Q4 2016

Shares 13,755 Value ($000) $770 Avg Close $47.64 Range $42.61 - $53.78

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	58,066	$3,845	$55.73	$52.23 - $59.49
Q1 2017	64,701	$4,274	$55.38	$49.25 - $59.68
Q4 2016	13,755	$770	$47.64	$42.61 - $53.78