SK Hynix Inc.
Leadership History
3 leaders · 2012 to present
Kwak Noh-jung is the CEO of SK Hynix, in the role since 2022. The first chief executive was Lee Seok-hee, from 2018.
| Name | Role | From | To | Years in role |
|---|---|---|---|---|
| Kwak Noh-jung | President and Chief Executive Officer | 2022 | Present | 4 |
| Lee Seok-hee | Former Chief Executive Officer | 2018 | 2022 | 4 |
| Chey Tae-won | Chairman, SK Group | 2012 | Present | 14 |
SK hynix is South Korea's second big memory chipmaker and, since June 2026, at times its most valuable listed company. It traces back to Hyundai Electronics, founded in 1983, and became part of SK Group in 2012. Its DRAM and NAND chips go into servers, smartphones and PCs, but its HBM for AI accelerators has driven record profits since 2024. The company is headquartered in Icheon, South Korea.
SK hynix is an integrated device manufacturer: it designs, fabricates, packages and tests memory chips in-house and sells them to cloud providers, AI accelerator makers, server OEMs, smartphone makers and PC brands. DRAM is the larger business and includes HBM, server DDR5 and mobile LPDDR. NAND flash covers mobile storage and enterprise SSDs, including Solidigm's high-capacity QLC drives. Profitability swings with memory prices, so long-term supply agreements (about 10 customers as of July 2026) and premium HBM pricing matter as much as volume.
President and Chief Executive Officer
2022 – Present
4 years (current)
Kwak joined Hyundai Electronics in 1994 and became CEO in March 2022. He led the company through the 2023 downturn, the HBM3E and HBM4 ramps, FY2025 revenue of ~$69B (KRW 97.15T), and the July 2026 Nasdaq ADR listing.
Former Chief Executive Officer
2018 – 2022
4 years
Lee executed the monumental $9 billion acquisition of Intel's NAND memory and storage business, rebranding it as Solidigm to aggressively capture SSD market share.
As CEO, he navigated brutal US-China semiconductor trade restrictions while maintaining massive capital expenditures in next-generation DRAM facilities.
Chairman, SK Group
2012 – Present
14 years (current)
Chey drove the massive, highly risky $3 billion acquisition of Hynix by the SK Group in 2012 during a severe downturn in the memory market.
His aggressive capital injection transformed the struggling chipmaker into SK Hynix, securing the resources needed to eventually dominate the global High Bandwidth Memory (HBM) market.
Despite facing acute challenges, including the perpetual threat of memory price collapses, the large financial burden of constructing new fabrication facilities in the United States and South Korea, and the aggressive catch-up efforts of Samsung Electronics in the HBM market, SK Hynix's fundamental business model remains structurally dominant in the high-performance computing segment. Following the US Department of Commerce's imposition of severe semiconductor export bans in late 2022, SK Hynix was forced to navigate a complex compliance landscape, relying on temporary 'validated end user' (VEU) exemptions that remain subject to revocation, creating a persistent overhang of regulatory risk that could permanently sever the company's access to the Chinese market if geopolitical tensions escalate. The cost of EUV tools, combined with the diminishing returns of transistor scaling, threatens to erode the historical cost-per-bit reductions that have driven the memory industry for forty years, forcing SK Hynix to rely increasingly on complex 3D packaging and architectural innovations rather than pure lithographic shrinking to deliver performance gains, a transition that requires R&D expenditure and introduces new yield risks in the manufacturing process.
Dr. Kwak Noh-jung has served as President and Chief Executive Officer of SK hynix since March 2022.
Kwak Noh-jung joined Hyundai Electronics in 1994 as a semiconductor process engineer. Over nearly three decades, he led manufacturing technology, served as Head of Safety & Development, and Chief Operating Officer (COO) before taking the helm as CEO.
Under Kwak's leadership, SK hynix executed the flawless production ramp of HBM3 and HBM3E, cemented the exclusive supplier relationship with Nvidia, announced the $3.87 billion US advanced packaging plant in Indiana, and delivered historic record profits.
Dr. Lee Seok-hee, a former Intel research engineer and KAIST professor, served as CEO from 2018 to 2022. Lee orchestrated the $9.0 billion acquisition of Intel's NAND business and now serves as CEO of US subsidiary Solidigm.
Park Sung-wook, a legendary memory technologist who began at Hyundai Electronics in 1984, served as CEO from 2013 to 2018. Park championed the R&D that created the world's first HBM chip in 2013 and guided SK hynix through its initial highly profitable years under SK Group.
SK Group Chairman Chey Tae-won took a massive personal gamble in 2011 by acquiring debt-ridden Hynix despite internal board skepticism. Chey poured tens of billions in counter-cyclical capital into R&D and fabs, creating the foundation for SK hynix's AI triumph.
Chung Ju-yung (1915-2001), the legendary founder of the Hyundai Group chaebol, founded Hyundai Electronics Industries in 1983, believing South Korea had to master advanced electronics to become a first-world industrial powerhouse.
Dr. Kim Dong-seop serves as President and Head of the Yongin Project, directing the land acquisition, power infrastructure, environmental permitting, and megafab construction of the $90B Yongin Semiconductor Cluster.
Kwak emphasizes "Total AI Memory Leadership," demanding that engineers listen obsessively to customer architecture requirements, solve thermal and packaging bottlenecks, and treat yield optimization as an exact science.
Kwak serves as Chairman of the Korea Semiconductor Industry Association (KSIA), leading South Korea's national policy advocacy for semiconductor tax incentives, power grid development, and talent training.
During the 2023 crash, leadership slashed capital expenditures on legacy commodity chips by over 50% while protecting HBM and advanced packaging investments, enabling SK hynix to emerge with undisputed market leadership when demand surged.
Kwak is tasked with maintaining SK hynix's HBM lead through HBM4 and HBM4E, bringing the Yongin megafab cluster online by 2027, operationalizing the Indiana packaging facility, and cementing a permanent tech moat over Samsung and Micron.
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