CalciMedica is trading 8% up in pre-market at $2.16 after extreme volatility following its 1-for-5 reverse stock split.

  • The split became effective August 28, 2026, with split-adjusted trading beginning August 31, 2026, and was intended to help restore Nasdaq minimum-bid compliance.
  • Shares surged 360.81% on August 31 and fell 6.54% on September 1; authorized shares were reduced from 500 million to 100 million.
  • The move reflects unusually volatile post-split trading, not a newly announced September 2 catalyst.