Doosan Completes Competition Reviews in 6 Countries for 2.3 Trillion Won Purchase of SK Siltron
Key Facts
Competition reviews of Doosan’s acquisition of SK Siltron have been completed in 6 countries, including South Korea, the United States and China, according to a report published by Korea Economic Daily on November 12, 2026. The outcome marks regulatory progress for the purchase of SK’s 70.6% stake in the company for 2.3 trillion Korean won, as Doosan announced on July 31, 2026. The report said the reviews ended about two months after the filings were submitted. Approval from competition authorities in the six countries marks an important step for the cross-border deal. The report did not specify an expected completion date.
The deal would give Doosan a direct expansion into semiconductor materials through a company that makes silicon wafers used in chip manufacturing applications. When announcing the agreement, Doosan said SK Siltron produces wafers with diameters of 300 and 200 millimeters. It added that the company’s 300-millimeter, or 12-inch, wafers rank among the world’s top 3 in competitiveness. According to the company, 5 firms, including SK Siltron, account for more than 90% of the global silicon wafer market. This reflects the company’s central position in the semiconductor materials supply chain, in Doosan’s description of the market.
In its disclosure on the deal, Doosan said SK Siltron recorded sales of about 2 trillion won and operating profit of more than 400 billion won in the year before the agreement was announced. These figures indicate the scale of the business the group is acquiring, but do not mean that sales or profit will remain at those levels in the future. A Doosan official described the agreement as providing the group with a “future growth engine” and foundations for sustainable earnings. The company also said Siltron would not be listed on the stock market. These plans and characterizations remain part of the buyer’s stated position when the agreement was signed.
Doosan presented its outlook for Siltron’s business as part of its rationale for the deal, saying it expects average annual growth of about 7% in the company’s wafer business. The group set a sales target of about 3 trillion won in 2031. These figures are targets and forecasts announced by Doosan, not results already achieved. The company also links its growth plan to Siltron’s position in the silicon wafer market and its presence in the two sizes it produces. Achieving the target will depend on business performance in the coming years, while the report on the competition reviews did not give a date for final closing.