Wilkerson Sonja Michelle

Date	Company	Security	Transaction	Code	Indirect	10b5-1	#Shares	#Remaining
16 Dec 24	KOP Koppers	Dividend Equivalent Rights Common Stock	Grant	Acquire A	No	No	9.399	88.615
16 Sep 24	KOP Koppers	Dividend Equivalent Rights Common Stock	Grant	Acquire A	No	No	8.345	79.216
10 Jun 24	KOP Koppers	Dividend Equivalent Rights Common Stock	Grant	Acquire A	No	No	7.377	70.871
2 May 24	KOP Koppers	Common Stock	Option exercise	Acquire M	No	No	20	20,749
2 May 24	KOP Koppers	RSU Common Stock	Grant	Acquire A	No	No	2,079	6,405
2 May 24	KOP Koppers	Dividend Equivalent Rights Common Stock	Option exercise	Dispose M	No	No	20	63.494
25 Mar 24	KOP Koppers	Dividend Equivalent Rights Common Stock	Grant	Acquire A	No	No	20	83.494
25 Mar 24	KOP Koppers	Dividend Equivalent Rights Common Stock	Grant	Acquire A	No	No	5.652	63.494

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