Byrna Technologies is trading 6.06% up at $4.20 after rising from the August 17 close of $3.96; no fresh company-specific announcement, earnings release, analyst action, or other clear catalyst was identified for August 18, 2026.

  • Recent coverage remains focused on disappointing fiscal second-quarter results and board developments.
  • Broader markets are weaker, so the pre-market gain does not clearly track overall sentiment.