TRANSTHERA-B's stock fell sharply by 5.70% during intraday trading on Wednesday.
The decline followed the release of clinical data for the company's core product tiengoitinib, presented at the 2026 ASCO Gastrointestinal Cancers Symposium. Market participants may have engaged in a "sell-the-news" reaction to the data disclosure.
Additionally, the broader biotechnology sector showed weakness, contributing to the downward pressure on TRANSTHERA-B shares. The company remains in early-stage clinical development with pre-revenue status and reported significant net losses in its recent financial results.