Why is SK Innovation merging its battery separator subsidiary SKIET, and what are the key operational changes involved?

SK Innovation is merging its battery separator subsidiary SKIET primarily because SKIET has faced持续承压 (sustained profitability pressure), and the merger is expected to alleviate group-level operational and financial burdens. Key operational changes include shutting down SKIET’s aging, low-efficiency Yesan plant in North Chungcheong Province by year-end—after 15 years of operation—and selling its Changzhou factory in China; as a result, SKIET’s separator production will be consolidated into its Polish facility, which has an annual capacity of 1.5 billion square meters.

What is the corporate and governance timeline for the SK Innovation–SKIET merger, and how will the business structure change post-merger?

The merger has been formally approved by the boards of both SK Innovation and SKIET; SK Innovation will be the surviving entity, and SKIET—listed on Korea’s KOSPI since May 2021—will lose its independent legal status after five years of public listing. Post-merger, SK Innovation will eliminate redundant management functions, streamline the separator business, and redirect R&D and operational resources toward core segments; the specific organizational restructuring plan remains undecided. A shareholder meeting to discuss the merger with investors is scheduled for September 14 in Seoul.

SK Innovation Plans to Merge Battery Separator Subsidiary

Sep 4, 2026

SK Innovation announced plans to fully absorb its battery separator subsidiary SK IE Technology to alleviate financial pressure and optimize operations. The merger involves consolidating production capacity at a Polish base while closing aging facilities.

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SK Innovation Plans to Merge Battery Separator Subsidiary

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