Doosan enters race to acquire SK Siltron in strategic semiconductor push

Doosan will compete with PEFs such as Hahn & Co., MBK, IMM PE and STIC Investments for the wafer maker

Doosan Corp. is the holding firm of Doosan Group
Doosan Corp. is the holding firm of Doosan Group
Jun-Ho Cha 2
2025-04-16 21:40:04 chacha@hankyung.com
Mergers & Acquisitions

South Korea’s Doosan Group has entered the bidding war for SK Siltron Co., the world’s third-largest manufacturer of semiconductor wafers, marking a bold move to expand its footprint across the semiconductor value chain and facilitate its transition from heavy equipment maker into high-tech manufacturer.

Doosan recently notified SK Inc., the holding company of SK Group, of its intention to join the race to acquire a 70.6% stake in SK Siltron from SK Inc., people familiar with the matter said on Wednesday.

The asset, which SK is offloading amid a broader portfolio realignment, has already attracted interest from a range of domestic private equity firms, including Hahn & Co., MBK Partners Ltd., IMM Private Equity and STIC Investments Inc.

The transaction is expected to value SK Siltron at around 5 trillion won ($3.5 billion), with Doosan estimating the equity value of the stake on offer at 1.5 trillion won ($1.1 billion), after deducting some 3 trillion won of debt.

SK Siltron employees show silicon wafers produced at its factory
SK Siltron employees show silicon wafers produced at its factory

A KEY GROWTH PILLAR FOR DOOSAN

For Doosan, the move reflects a long-term bet on semiconductors as a pillar of future growth, alongside small modular nuclear reactors, renewable energy, robotics and artificial intelligence.

The conglomerate has already forayed into the semiconductor space, acquiring non-memory chip testing company Doosan Tesna in 2022 for 460 billion won.

SK Siltron would give Doosan a strategic anchor in the front-end of chip manufacturing, where it currently lacks scale.

Sources said Doosan is expected to highlight its industrial pedigree and long-term strategic interest in the semiconductor sector as it competes with financial bidders.

The group is likely to argue that an acquisition by a private equity firm could trigger a resale to monetize the asset, whereas Doosan would ensure long-term operational stability and employment security for SK Siltron's workforce, they said.

SK Siltron's wafer plant in Gumi, North Gyeongsang Province
SK Siltron's wafer plant in Gumi, North Gyeongsang Province

A person close to the matter said Doosan’s acquisition push is led by Park Sang-soo, the eldest son of group Chairman Park Jeong-won.

A former semiconductor analyst at Korea Investment & Securities Co., Park Sang-soo joined Doosan Corp., the group’s holding firm, last year as a senior executive within its new business strategy team.

FINANCING COULD BE A CHALLENGE

Still, financing could prove challenging.

Doosan Corp. has about 200 billion won in cash and cash equivalents on a standalone basis, according to sources.

The company is said to be exploring various options, including leveraged financing from local banks and a possible consortium with financial investors to secure the deal.

SK Siltron’s silicon wafer plant in Gumi
SK Siltron’s silicon wafer plant in Gumi

If successful, the acquisition would mark Doosan’s most significant M&A transaction since its 2007 acquisition of US construction equipment maker Bobcat, later renamed Doosan Bobcat Inc.

SK Siltron is the world's third-largest manufacturer of semiconductor wafers, also called substrates, after Japan's SUMCO and Shin-Etsu Chemical.

The cash cow of SK Group generates more than 600 billion won in earnings annually.

In 2017, SK Group purchased a 51% stake in SK Siltron from LG Group for 620 billion won and an additional 19.6% from financial investors.

SK Group Chairman Chey Tae-won owns the remaining 29.4% stake in the wafer maker.

Write to Jun-Ho Cha at chacha@hankyung.com

In-Soo Nam edited this article.

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