−Removed: Our operating headquarters is currently located in Malvern, Pennsylvania and our primary research and development facility is in Conshohocken, Pennsylvania.
−Removed: As of December 31, 2024, we had ten manufacturing facilities in two countries.
−Removed: We also had five administrative facilities and two research and development facilities located in two countries.
−Removed: Our joint ventures operated out of two facilities located in two countries.
+Added: Our operating headquarters is currently located in Wayne, Pennsylvania.
+Added: As of December 31, 2025, we had nine manufacturing facilities and two administrative facilities located in the United States.
The table below presents summary information regarding our principal manufacturing facilities that we own as of December 31, 2025.
−Removed: Location Segment
−Removed: Baton Rouge, Louisiana, United States Ecoservices
−Removed: Baytown, Texas, United States Ecoservices
−Removed: Dominguez, California, United States Ecoservices
−Removed: Delfzijl, The Netherlands (1)
−Removed: Advanced Materials & Catalysts
−Removed: Hammond, Indiana, United States Ecoservices
−Removed: Houston, Texas, United States Ecoservices
−Removed: Kansas City, Kansas, United States (1)
−Removed: Advanced Materials & Catalysts
−Removed: Martinez, California, United States Ecoservices
−Removed: West Orange, Texas, United States Ecoservices
−Removed: Portland, Oregon, United States Ecoservices
−Removed: (1) We lease a portion of the site to the Zeolyst Joint Venture.
+Added: Baton Rouge, Louisiana, United States
+Added: Baytown, Texas, United States
+Added: Dominguez, California, United States
+Added: Hammond, Indiana, United States
+Added: Houston, Texas, United States
+Added: Martinez, California, United States
+Added: Waggaman, Louisiana, United States
+Added: West Orange, Texas, United States
+Added: Portland, Oregon, United States
+Added: We believe that these facilities are adequate, suitable and of sufficient capacity to support our immediate needs.
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.