HLB bioStep CEO Baek Seongjin Increases Stake to 0.06% via Open Market Purchase… Small but Positive Signal of Management Confidence


  • On May 29, 2026, HLB bioStep CEO Baek Seongjin purchased 5,000 common shares at 3,800 KRW per share through open market trading, increasing his total holdings to 10,000 shares (0.06% stake).
  • Compared to the previous report (May 8), his ownership doubled from 0.03% to 0.06%, with the purchase price (3,800 KRW) representing a ~2.3% premium over the base date closing price (3,715 KRW).
  • This small but voluntary insider purchase by the largest shareholder and CEO signals management confidence in the company's future value, which can be interpreted as a positive signal to the market.
  • However, the scale of the purchase is minimal relative to total shares outstanding (17.43 million shares), increasing stake by only 0.03 percentage points, so the direct impact on short-term stock price is limited. The signal strength would be enhanced if followed by additional purchases or shareholder return policies such as share buybacks.

KOSDAQ Filing Information


  • Filing: Report on Ownership of Specific Securities by Executives and Major Shareholders
  • Company: HLB bioStep (278650)
  • Submission: Seongjin Baek
  • Receipt: 05-29-2026