Terrestrial Energy is trading at $2.97, up 6.07%, based on the supplied pre-market quote; no confirmed overnight catalyst directly explaining the move was found.

  • Terrestrial Energy announced David Williams as chief commercial officer on October 20, but available reporting does not link the appointment to the share-price move.
  • The supplied market data shows the Nasdaq up 0.60% pre-market. This may provide context but does not establish the cause of the stock’s move.