SEOUL, December 18 (AJP) - Heavy-equipment-strong South Korean conglomerate Doosan Group has moved closer to the chipmaking segment after being named the preferred bidder to acquire SK siltron, the world’s third-largest maker of silicon wafers.
SK Inc. said in a regulatory filing Wednesday that it had notified Doosan Corp. of its selection as the preferred negotiating partner for the sale of its stake in SK siltron. SK Inc. holds 70.6 percent in the wafer entity.
Given the market-estimated valuation of around 5 trillion ($3.4 billion), the transaction is expected to be worth roughly 3 trillion to 4 trillion won, depending on final terms. It remains unclear whether the deal will involve remaining 29.4 percent stake held by SK Group Chairman Chey Tae-won.
“Details of the transaction will be determined through negotiations with the preferred bidder,” SK Inc. said, adding that a follow-up disclosure would be made once terms are finalized or within three months.
SK siltron-held technology is labeled "national core technology" as it is the country's sole specialized producer of semiconductor wafers, a core base material for chip manufacturing, and ranks third globally by market share in 12-inch wafers.
It supplies Samsung Electronics and SK hynix and has not posted a loss since joining SK Group. Its medium- to long-term outlook is viewed as relatively solid, supported by expanding AI-driven chip demand and rising utilization rates at major customers.
The potential acquisition comes as Doosan accelerates a strategic pivot toward semiconductors as part of a broader portfolio reshuffle. The group has already expanded into the sector through the acquisition of semiconductor testing company Doosan Tesna and its subsidiary Enzion, while also strengthening its materials and equipment businesses.
If the SK Siltron deal is completed, Doosan would build a vertically integrated semiconductor portfolio structured around three pillars: Doosan Tesna, which specializes in non-memory chip testing; Doosan Corp.’s Electronics BG unit, which produces copper-clad laminate (CCL) used in semiconductor substrates; and SK Siltron, which would supply customized wafers.
Doosan Corp.’s Electronics BG unit posted standalone revenue of 439.9 billion won in the third quarter, with cumulative revenue through September reaching 1.319 trillion won — already surpassing last year’s full-year figure of 1.0072 trillion won.
SK Group has sought to divest SK siltron since early this year as part of an ongoing restructuring aimed at reallocating resources toward core growth engines. Several domestic and overseas private equity funds conducted preliminary due diligence in the first half of the year, but talks stalled amid differences over valuation and deal terms.
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