SK Group
South Korean conglomerate
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| April 2025 | SK Telecom suffered a significant data leak, announcing that all 23 million subscribers would be eligible for a free USIM card replacement starting April 28. |
| March 18 2025 | SK Innovation released its Annual Report for the Fiscal Year 2024, detailing the company's corporate governance and shareholder structure. |
| February 2025 | SK On merged with SK Enterm, further consolidating the company's organizational structure. |
| 2024 | SK Telecom recorded sales of KRW 4.532 trillion, operating profit of KRW 533.3 billion, and net profit of KRW 280.2 billion in the third quarter. |
| December 23 2024 | SK sold 85 percent of its subsidiary SK Specialty to Hahn & Company, a domestic private equity fund, for a stake worth about 2.7 trillion won. |
| November 2024 | SK Innovation and SK E&S completed a merger, creating a new entity with total assets of KRW 105 trillion. Simultaneously, SK On merged with SK Trading International. |
| November 2024 | SK Group Chairman Chey Tae-won was appointed chairman of the board of directors of Soldigm, SK Hynix's U.S.-based NAND flash memory unit. |
| August 20 2024 | SK Networks sold its rental car unit to a Singapore-based private equity fund for 820 billion won (US$618 million). |
| January 2024 | SK Enthem became the 9th subsidiary of SK Innovation, spinning off from SK Energy to handle import and distribution of crude oil and petroleum products. |
| 2022 | SK Telecom announced a strategic partnership with Joby Aviation to develop flying taxis for the South Korean market, targeting launch by 2025. |
| 2022 | SK On ranked fifth in the world with a market share of 7 percent according to SNE research in the first half of the year. |
| July 2022 | SK Group announced a $22 billion investment in the United States across semiconductor, green energy, bioscience, and other technology industries, with a total planned investment of over $52 billion in the US by 2025. |
| 2021 | SK Wyverns was sold to E-Mart and subsequently renamed SSG Landers. |
| 2021 | SK Group recorded combined revenues of $133 billion, with $50 billion coming from exports, demonstrating significant global economic performance. |
| November 2021 | SK Inc became the largest shareholder of SK Square, holding 30.01 percent of the company. |
| November 2021 | SK Telecom spun off a new company called SK Square, focusing on investments, semiconductors, and ICT. |
| October 1 2021 | SK Innovation officially completed the spin-off of its battery business, creating 'SK On'. |
| October 1 2021 | Remaining two business units—batteries and oil exploration—were spun off into SK On and SK Earthon, respectively. |
| September 2021 | Ford and SK Innovation announced a joint venture to manufacture batteries in the Kentucky/Tennessee region for Ford motor vehicles. |
| October 2020 | SK Telecom formed a partnership with Uber Technologies to spin off its mobility operations into a subsidiary called T Map Mobility. |
| 2019 | The company decided to spin off its material division and established SK IE Technology. |
| 2019 | SK Innovation agreed to pay LG Chem $1.8 billion in cash and royalties to avert the import ban, resolving the trade secrets dispute. |
| 2019 | The ITC sided with LG Chem and issued a limited 10-year exclusion order prohibiting imports of certain lithium-ion batteries by SK Innovation into the United States. |
| 2019 | LG Chem sued SK Innovation at the U.S. International Trade Commission (ITC) for misappropriation of trade secrets by hiring former employees, requesting an import ban on SK Innovation's lithium-ion batteries and infrastructure technology. |
| October 28 2019 | SK Telecom announced a partnership with Now Telecom to deploy 5G services in the Philippines, expanding their international telecommunications market presence. |
| June 2019 | SK Telecom launched the world's first 5G roaming service in partnership with Swisscom. |
| December 17 2018 | SK Telecom introduced the 'baro' roaming plan offering unlimited international roaming voice calls, which drew 2.2 million customers and won the 'Best Mobile Technology Breakthrough in Asia' award at the 2019 Asia Mobile Awards. |
| March 21 2018 | SK Innovation announced the acquisition of U.S. shale oil and gas company Longfellow Nemaha. |
| March 31 2017 | SK Innovation announced the closure of its electric vehicle battery plant in China, which had been closed since January of that year due to joint venture partners halting production. |
| February 2017 | SK Group acquired the polyethylene acrylic acid business of Dow Chemical Company for $370 million and planned to increase battery production capacity from 1.9 to 3.9 GWh per year by the end of 2018, targeting supply to Kia and Mercedes. |
| November 2015 | SK Telecom announces a deal to acquire CJ HelloVision, the country's largest cable and Internet operator, with plans to merge it with SK Broadband. |
| 2013 | SK Telecom became the world's first operator to offer a commercial LTE-Advanced network under the brand name bandLTE, coinciding with the release of the Samsung Galaxy S4 LTE-A model. |
| July 2013 | Company restructured into an independent management system, dividing into two business units: E&P (Exploration & Production) and B&I (Batteries and Materials), and establishing five subsidiaries: SK Energy, SK Global Chemical, SK Lubricants, SK Incheon Petrochem, and SK Trading International. |
| July 6 2013 | Reported that Apple was in talks with SK Telecom to release the iPhone 5s model on SK's LTE Advanced network. |
| September 2012 | SK Telecom ceased its S-DMB service after experiencing significant financial losses in its final years. |
| 2011 | Petroleum business was spun off to become SK Energy, and chemical business was spun off to become SK Innovation. |
This contents of the box above is based on material from the Wikipedia articles SK Group, SK Telecom & SK Innovation, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.