Heron Therapeutics is trading 8.01% down at $0.28, with no clear company-specific announcement identified for September 21, 2026.

  • Recent reporting points to previously disclosed CINVANTI patent uncertainty, withdrawn 2026 guidance, and strategic-review concernsβ€”not a new catalyst on this date.
  • The broader market is rising, so the decline does not appear driven by overall risk sentiment.
  • Reuters showed the prior session at $0.31, down 1.90%.