SK square Co., Ltd. filed a Schedule 13G with the SEC on November 13, 2026, reporting beneficial ownership of 146,100,000 common shares of SK hynix Inc. as of the event date of September 30, 2026.

Key Highlights

  • Reporting person: SK square Co., Ltd., organized in the Republic of Korea, filed this statement as the beneficial owner.
  • Shares held: SK square reported beneficial ownership of 146,100,000 common shares of SK hynix Inc., par value Won 5,000 per share.
  • Ownership percentage: The 146,100,000 shares represent 20.0% of the class, calculated against 728,865,500 common shares outstanding after the offering.
  • Voting and dispositive power: SK square reported sole voting power and sole dispositive power over all 146,100,000 shares, with zero shared voting or dispositive power.
  • Triggering event date: The date of the event requiring this filing was September 30, 2026.
  • Share count basis: The outstanding share figure of 728,865,500 was drawn from SK hynix's prospectus filed with the SEC on July 10, 2026, pursuant to Rule 424(b)(4).

SK Square's Reported 20% Common Share Position in SK hynix

According to the filing, SK square Co., Ltd., headquartered at 65, Eulji-ro, Jung-gu, Seoul 04539, Korea, submitted a Schedule 13G disclosing its beneficial ownership position in SK hynix Inc., whose principal executive offices are located at 2091, Gyeongchung-daero, Bubal-eup, Icheon-si, Gyeonggi-do 17336, Korea. The filing was signed by Joongsuk Oh, Vice President of SK square Co., Ltd., and dated November 13, 2026.

The filing states that all 146,100,000 shares reported are common shares directly held by SK square and that the ownership percentage of 20.0% is calculated based on 728,865,500 common shares outstanding immediately after an offering, as reported by SK hynix in a prospectus filed with the SEC on July 10, 2026. The filing notes that CUSIP number 78392B206 applies to SK hynix's American Depositary Shares, each representing one-tenth of a common share, and that no CUSIP number has been assigned to the common shares themselves.

The filing indicates SK square checked none of the institution-type boxes under Item 3, which addresses whether the filer is a broker, bank, insurance company, investment company, investment adviser, or similar entity. Items 5 through 9 of the Schedule 13G, covering topics such as ownership of 5% or less, ownership on behalf of another person, subsidiary identification, and group membership, are each designated "Not Applicable" in the filing.

What Was Disclosed

SK square Co., Ltd. disclosed via Schedule 13G that it directly holds 146,100,000 common shares of SK hynix Inc., representing 20.0% of the class as of September 30, 2026, with sole voting and dispositive power over all reported shares.