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MoonLake Immunotherapeutics CEO Sells $2.75 Million in Shares

Apr 18, 2026 14:37 UTC
MLTX
Short term

CEO Jorge Santos da Silva reduced his direct holdings in MoonLake Immunotherapeutics by approximately 4.9%. Despite the sale, the executive retains a significant stake in the clinical-stage biotech firm.

  • CEO sold 150,000 shares at an average price of $18.35
  • Total transaction value was approximately $2.75 million
  • CEO retains over 2.9 million shares, representing the bulk of his holdings
  • Sonelokimab therapy has been granted FDA fast track designation
  • Cash reserves were $394 million at the end of 2025
  • Quarterly operating expenses are approximately $65 million

Jorge Santos da Silva, CEO of MoonLake Immunotherapeutics (NASDAQ: MLTX), has sold 150,000 shares of company stock through open-market transactions. The sales, executed on April 10 and 13, 2026, were completed at a weighted average price of $18.35 per share, totaling approximately $2.75 million. According to SEC Form 4 filings, the transaction represents a small fraction of the CEO's overall position. Following the sale, Santos da Silva continues to hold 2,924,893 shares directly, suggesting a continued long-term commitment to the company's trajectory despite the divestment. MoonLake is currently a clinical-stage entity focusing on inflammatory diseases using proprietary Nanobody technology. The company's primary asset, Sonelokimab, has received a fast track designation from the U.S. Food and Drug Administration (FDA), though the stock has faced pressure following previous clinical trial results and a decline from its 52-week high of $62.75. The company remains pre-revenue with quarterly operating expenses estimated at $65 million. However, MoonLake maintains a solid liquidity position, reporting $394 million in cash at the end of 2025. Investors continue to weigh the potential of FDA approval against the inherent risks of clinical-stage biotechnology investing.

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