Sono-Tek is trading 8.7% up at $5.41 in pre-market on September 30, 2026, with no clear catalyst identified. - The September 29 close was $4.98. - Its latest listed news is from July, and its next earnings report is expected October 20. - Broader-market indicators are near flat or slightly lower and do not clearly explain the rise; a prior after-hours report also noted a gain without an identified catalyst.