Core Viewpoint - South Bow Corp. is addressing the findings from an independent root cause analysis (RCA) related to an incident on the Keystone Pipeline, emphasizing its commitment to safety and system integrity improvements [1][2][3]. Root Cause Analysis Findings - The RCA revealed that the incident at Milepost 171 was due to a fatigue crack originating from the pipe's long-seam weld, with the seam weld geometry contributing to stress concentration [6]. - The pipe and welds met industry standards, and the pipeline was operating within design pressure at the time of the incident [2][6]. - The presence of hydrogen increased material brittleness and accelerated the crack growth during 15 years of normal operations [6]. Remedial Actions - South Bow has completed seven in-line inspection runs and 51 integrity digs, with preliminary results indicating no injurious issues [3]. - The company is modifying its in-line inspection process to improve data analysis and tool performance, with additional inspections scheduled for 2026 [3][4]. - A remedial work plan has been submitted to the Pipeline and Hazardous Materials Safety Administration (PHMSA) for approval, incorporating RCA recommendations [4]. Company Overview - South Bow operates 4,900 kilometers (3,045 miles) of crude oil pipeline infrastructure, connecting Alberta crude oil supplies to U.S. refining markets [11]. - The company is recognized as an investment-grade entity, with shares traded on both the Toronto Stock Exchange and the New York Stock Exchange under the symbol SOBO [11].

Core Viewpoint - South Bow Corp. has announced the extension of the expiration dates for its Canadian and U.S. Exchange Offers related to certain outstanding notes, providing holders additional time to exchange their notes for new series with the same interest rates and due dates [1][3][6]. Canadian Exchange Offer - The expiration date for the Canadian Exchange Offer has been extended from 5:00 p.m. ET on August 4, 2025, to 5:00 p.m. ET on August 6, 2025 [3]. - Holders of the 7.625% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2055 and 7.500% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2055 are offered the opportunity to exchange their notes for new series with the same interest rates and due dates [2][4]. - The deadline to withdraw tenders of the Initial Canadian Notes has also been extended to the new expiration date, with all other terms remaining unchanged [3][4]. U.S. Exchange Offer - The expiration date for the U.S. Exchange Offer has similarly been extended from 5:00 p.m. ET on August 4, 2025, to 5:00 p.m. ET on August 6, 2025 [6][7]. - Holders of the 4.911% Senior Notes due 2027, 5.026% Senior Notes due 2029, 5.584% Senior Notes due 2034, and 6.176% Senior Notes due 2054 are offered the opportunity to exchange their notes for new series with the same interest rates and due dates [5][8]. - The deadline to withdraw tenders of the Initial U.S. Notes has also been extended to the new expiration date, with all other terms remaining unchanged [7][8]. Company Overview - South Bow operates 4,900 kilometers (3,045 miles) of crude oil pipeline infrastructure, connecting Alberta crude oil supplies to U.S. refining markets [12]. - The company is based in Calgary, Alberta, and is an investment-grade spinoff of TC Energy, having become a standalone entity on October 1, 2024 [12].