Geron's stock experienced a sharp pre-market decline of 6.15% on Wednesday.
The sell-off followed the release of the company's fourth-quarter financial results, which fell short of analyst expectations. Geron reported an operating loss of USD 27.822 million, which was worse than the Ibes estimate of a USD 24 million loss.
Additionally, the company posted a quarterly earnings per share (EPS) of USD -0.05, contributing to negative investor sentiment ahead of the market opening.