Immunome Inc. (IMNM) shares experienced a significant surge, soaring 6.33% in a 24-hour period, following news of a substantial insider purchase by the company's Chief Technology Officer (CTO). The stock's impressive performance comes as investors react positively to the show of confidence from a key executive.

According to a regulatory filing, Immunome's CTO Philip Tsai acquired 12,300 shares of common stock on March 24th, with the total transaction amounting to approximately $103,600. This insider buying activity triggered increased investor interest, leading to a notable uptick in the stock price during after-hours trading on Tuesday, which continued into the next trading session.

Insider purchases, particularly those made by high-ranking officers such as the CTO, are often viewed favorably by the market. Such actions suggest that those with intimate knowledge of the company's operations and potential believe the stock may be undervalued or that positive developments are on the horizon. The substantial nature of Tsai's investment appears to have resonated strongly with investors, contributing to the significant price movement observed in Immunome's stock.