News that US Food and Drug Administration Center for Biologics Evaluation and Research (CBER) director Peter Marks submitted his resignation, effective 5 April, late in the day on 28 March shook the biopharmaceutical industry over the weekend, with the repercussions of the CBER leadership change rattling drug and vaccine maker stocks on 31 March. Valuations plummeted for biopharma companies in general, while broader stock indices closed the day in mostly positive territory.
Peter Marks’ Departure From FDA Rattles Biopharma Industry
XBI Reaches A New 2025 Low
Stock prices plummeted, particularly for vaccine makers and cell and gene therapy developers, after the US FDA’s top biologics overseer resigned over vaccine misinformation concerns.

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