Robert F. Buesinger

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
14 Aug 24	WLK Westlake	Common Stock	Payment of exercise	Dispose F	No	No	145.44	2,772	403.16 k	21,923
13 Aug 24	WLK Westlake	Common Stock	Option exercise	Acquire M	No	No	0	7,051	0.00	24,695
13 Aug 24	WLK Westlake	RSU Common Stock	Option exercise	Dispose M	No	No	0	7,051	0.00	0
9 May 24	WLK Westlake	Common Stock	Sell	Dispose S	No	No	158.5	3,500	554.75 k	17,644
7 May 24	WLK Westlake	Common Stock	Sale back to company	Dispose D	No	No	157.5	3,133	493.45 k	21,144
7 May 24	WLK Westlake	Common Stock	Option exercise	Acquire M	No	No	122.65	3,133	384.26 k	24,277
7 May 24	WLK Westlake	Employee Option Common Stock	Option exercise	Dispose M	No	No	122.65	3,133	384.26 k	6,362
15 Mar 24	WLK Westlake	Common Stock	Sell	Dispose S	No	No	144.5	3,878	560.37 k	21,144
13 Mar 24	WLK Westlake	Common Stock	Sell	Dispose S	No	No	144.5	122	17.63 k	25,022

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.