CEO Lee Byungjae Resigns; Yoon Sooah Becomes Sole CEO


  • Changed from co-CEOs Lee Byungjae and Yoon Sooah to sole CEO Yoon Sooah
  • Lee Byungjae's resignation due to personal reasons
  • Effective date: 2026-05-18; no separate board resolution date disclosed
  • Remaining CEO Yoon Sooah holds 20,512 shares (0.04%) of Flask
  • Yoon Sooah has been CEO of Flask since August 2019
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KOSDAQ Filing Information


  • Filing: Change In Representative Director
  • Company: Flask (041590)
  • Submission: Flask Co., Ltd.
  • Receipt: 05-19-2026
  • Under KRX KOSDAQ Market Division