UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
−Removed: The following table sets forth information regarding Koppers Holdings’ repurchases of shares of its common stock during the three months ended March 31, 2026:
+Added: The following table sets forth information regarding Koppers Holdings’ repurchases of shares of its common stock during the three months ended June 30, 2026:
Period Total Number of Common Shares Purchased (1)
1 unchanged sentence
Total Number of Common Shares Purchased as Part of Publicly Announced Plans or Programs Approximate Dollar Value of Common Shares that May Yet be Purchased Under the Plans or Programs (Dollars in Millions)
−Removed: January 1 - January 31 0 $ 0.00 0 $ 66.5
−Removed: February 1 - February 28 38,505 $ 37.77 38,505 $ 65.0
−Removed: March 1 - March 31 541,913 $ 37.67 541,913 $ 44.6
+Added: April 1 - April 30 0 $ 0.00 0 $ 44.6
+Added: May 1 - May 31 158,309 $ 41.27 158,309 $ 38.1
+Added: June 1 - June 30 199,923 $ 42.55 199,923 $ 29.6
Total 358,232 358,232
7 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.