Kostecsis Completes Exchangeable Bond Conversion, Turns to Profit, Financial Structure Improves


  • Q1 2026 revenue 5,448 million KRW (up 64.5% YoY from 3,312 million), operating profit turned positive, net profit 947 million (vs -353 million)
  • All exchange rights of 2nd exchangeable bonds exercised (Feb-Mar 2026) → disposal of 442,778 treasury shares, extinguishment of bonds and derivative liabilities (~1,968 million), gain on treasury share disposal 2,742 million
  • Debt ratio improved: Net debt/equity ratio 46.7% (vs 59.1% at year-end), total equity 28,598 million (vs 22,304 million)
  • Cash and cash equivalents increased to 2,444 million (from 1,490 million)
  • Major sales: RF communication package 3,946 million, power semiconductor spacer 1,502 million, export share 67.3%
  • R&D expenses 227 million (4.16% of sales), 30 patents registered/filed
  • One pending lawsuit (242 million) → management deems immaterial
  • Expanding AI data center and power semiconductor thermal management solutions

KOSDAQ Filing Information


  • Filing: Quarterly Report (2026.03)
  • Company: KOSTECSYS (355150)
  • Submission: KOSTECSYS. CO., LTD.
  • Receipt: 05-15-2026