The FDA will request Sarepta Therapeutics stop all shipments of Elevidys, its gene therapy for Duchenne muscular dystrophy, following two deaths tied to the product.

Key Takeaways Sarepta Therapeutics shares were down nearly 25% early Friday morning.The tumble followed a report that a third patient has died during a clinical trial for its Elevidys drug that treats muscular dystrophy.

The restructuring enacted by Sarepta Therapeutics is expected to save up to $400 million in annual costs. Read why I'm downgrading SRPT stock from Hold to Sell.

The favorable market reaction indicates investor relief at management’s swift measures to rectify the company's worsening financial situation.

These were the most active stocks ahead of Friday's market open: Sarepta Therapeutics Inc.'s stock tumbled 27% after the company said another patient died following gene-therapy treatment, Bloomberg reported,