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 September 30, 2025:
+Added: The following table sets forth information regarding Koppers Holdings’ repurchases of shares of its common stock during the three months ended March 31, 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: July 1 - July 31 0 $ 0.00 0 $ 75.4
−Removed: August 1 - August 31 130,812 $ 29.69 130,812 $ 71.5
−Removed: September 1 - September 30 0 $ 0.00 0 $ 71.5
+Added: January 1 - January 31 0 $ 0.00 0 $ 66.5
+Added: February 1 - February 28 38,505 $ 37.77 38,505 $ 65.0
+Added: March 1 - March 31 541,913 $ 37.67 541,913 $ 44.6
Total 580,418 580,418
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.