WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

Public Sector Pension Investment Board's Holding History (CIK: 0001396318)

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

Q4 2018

Shares 20,650 Value ($000) $1,366 Avg Close $64.35 Range $53.36 - $76.44

Q3 2018

Shares 15,200 Value ($000) $1,263 Avg Close $86.83 Range $72.82 - $100.10

Q2 2018

Shares 12,900 Value ($000) $1,388 Avg Close $99.34 Range $90.39 - $110.06

Q1 2018

Shares 12,900 Value ($000) $1,434 Avg Close $98.39 Range $86.89 - $107.41

Q4 2017

Shares 12,900 Value ($000) $1,374 Avg Close $81.78 Range $72.56 - $95.02

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	20,650	$1,366	$64.35	$53.36 - $76.44
Q3 2018	15,200	$1,263	$86.83	$72.82 - $100.10
Q2 2018	12,900	$1,388	$99.34	$90.39 - $110.06
Q1 2018	12,900	$1,434	$98.39	$86.89 - $107.41
Q4 2017	12,900	$1,374	$81.78	$72.56 - $95.02