Imperial Petroleum is trading 11.8% higher at $29.07, up from its September 22 close of $26.10; no new company-specific announcement dated September 23, 2026, was identified to clearly explain the pre-market move.
- The latest relevant disclosure is a September 11 preferred-share dividend of $0.546875.
- The dividend is payable September 30 to shareholders of record September 25; available evidence does not directly link it to the move.