MoonLake Immunotherapeutics (MLTX) shares fell 87% pre-bell Monday after Bloomberg reported that late-stage trial data for the company's experimental skin disease drug, sonelokimab, failed to demonstrate superiority over a rival treatment from UCB.
Maris-Tech (MTEK) stock was down 43% after the company reported late Friday weaker financial results for the six months ended June 30 versus a year earlier.
Precipio (PRPO) shares were 15% lower, adding to Friday's loss.