SET temporarily posted P sign on QDC due to Auto Pause.

Auto Pause Subject : SET temporarily posted P sign on QDC due to Auto Pause. Security Symbol - QUANTUM D C PUBLIC COMPANY LIMITED (QDC) Sign posted : P Sign posted on (date) : 26-Dec-2025 Auto pause period : from 09:43 hours onwards The P sign will be posted during pause period. Recommence trading time : Pre-Open at 10:23 hours Open at 10:43 hours Reason : The total amount of such listed securities for bids at all price levels or offers at all price levels exceeds 15 percent of the amount of the listed securities. ______________________________________________________________________