🟢 Tscan Therapeutics is trading 6.6% up in after-hours trading with no clear catalyst identified

Tscan Therapeutics is trading 6.6% up at $0.33, with no clear company-specific announcement or late-breaking catalyst identified.

• Shares closed at $0.31 on September 18, 2026.
• The latest significant developments remain the September 2 strategic reorganization and September 11 executive retention program, both predating this move.
• Broader markets were modestly positive, but below the threshold for a strong market-wide explanation.