CalciMedica, Inc. Files 1‑for‑5 Reverse Stock Split and Cuts Authorized Shares

What Happened
CalciMedica, Inc. announced a Certificate of Amendment to its charter to implement a one-for-five (1-for-5) reverse stock split and to reduce authorized common shares from 500,000,000 to 100,000,000. The amendment was approved by stockholders at the August 19, 2026 annual meeting and by the board on August 19, 2026, and is effective at 5:00 p.m. Eastern Time on August 28, 2026. Trading on Nasdaq under the ticker "CALC" will reflect the split-adjusted shares when the market opens on August 31, 2026.

Key Details

• Reverse split ratio: 1-for-5 (every five shares become one share) effective Aug 28, 2026 at 5:00 p.m. ET.
• Authorized common shares reduced from 500,000,000 to 100,000,000.
• Proportionate adjustments to outstanding stock options, restricted stock units, warrants, and shares reserved under equity plans (exercise prices increase; number of shares decreases proportionately).
• No fractional shares will be issued; holders entitled to fractional shares will receive a cash payment in lieu.
• New CUSIP for the common stock after the reverse split: 38942Q301.

Why It Matters
For investors, the reverse stock split reduces the number of outstanding shares and consolidates the share count without changing each holder’s proportional ownership (except for cash-outs of fractional shares). Adjustments to option and award terms preserve economic value per holder but change share counts and exercise prices. The reduction in authorized shares and the split may affect liquidity, per‑share metrics and the stock’s trading appearance on Nasdaq, so shareholders should note the effective and trading-adjustment dates (Aug 28 and Aug 31, 2026).