WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2019

Shares 46,726 Value ($000) $3,170 Avg Close $64.77 Range $57.75 - $72.34

Q4 2018

Shares 59,459 Value ($000) $3,934 Avg Close $64.35 Range $53.36 - $76.44

Q3 2018

Shares 60,521 Value ($000) $5,030 Avg Close $86.83 Range $72.82 - $100.10

Q2 2018

Shares 83,903 Value ($000) $9,030 Avg Close $99.34 Range $90.39 - $110.06

Q1 2018

Shares 201,093 Value ($000) $22,351 Avg Close $98.39 Range $86.89 - $107.41

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	46,726	$3,170	$64.77	$57.75 - $72.34
Q4 2018	59,459	$3,934	$64.35	$53.36 - $76.44
Q3 2018	60,521	$5,030	$86.83	$72.82 - $100.10
Q2 2018	83,903	$9,030	$99.34	$90.39 - $110.06
Q1 2018	201,093	$22,351	$98.39	$86.89 - $107.41