This report does not constitute a rating action. For the latest full analysis on this entity, please see the full analysis"Four Key Formosa Companies ,"published Nov. 2, 2026, on RatingsDirect. Ratings Detail (as of November 02, 2026)* Formosa Plastics Corp. Issuer Credit Rating BBB+/Stable/-- Taiwan National Scale twAA/Stable/twA-1+ Issuer Credit Ratings History 19-Oct-2026 BBB+/Stable/-- 03-Jul-2025 BBB/Negative/-- 30-Oct-2023 BBB+/Negative/-- 19-Oct-2026 Taiwan National Scale twAA/Stable/twA-1+ 03-Jul-2025 twAA-/Negative/twA-1+ 30-Oct-2023 twAA/Negative/twA-1+ Related Entities Formosa Chemicals&Fibre Corp. Issuer Credit Rating BBB+/Stable/-- Taiwan National Scale twAA/Stable/twA-1+ Senior Unsecured Taiwan National Scale twAA Formosa Petrochemical Corp. Issuer Credit Rating BBB+/Stable/-- Taiwan National Scale twAA/Stable/twA-1+ Formosa Taffeta Co. Ltd. Issuer Credit Rating Taiwan National Scale twA/Positive/twA-1 Nan Ya Plastics Corp. Issuer Credit Rating