Pulse Biosciences (PLSE) stock surged 5.40% during the night session on Monday, marking a significant 24-hour gain for the medical technology company.

The sharp rise appears to be driven by positive sentiment following substantial insider purchases. The company's CEO, Paul A. LaViolette, acquired $295,350 worth of common shares, while director and 10% owner Robert W. Duggan purchased 660,233 shares for approximately $13 million.

Such significant buying by top executives and directors is often interpreted by the market as a strong vote of confidence in the company's future prospects and financial health.