Olema Pharmaceuticals (OLMA) falls 10.67% after hours following competitor clinical failure
ByAinvest Wire
Friday, Sep 11, 2026 7:24 pm ET1min read
OLMA--
Olema Pharmaceuticals (OLMA) shares dropped approximately 10.67% in after-hours trading on September 11, 2026, following AstraZeneca's announcement that its competing SERD drug Etcamah failed in a Phase 3 clinical trial. This negative clinical data for a direct competitor in the same therapeutic class raised concerns about the viability of Olema's own pipeline asset, palazestrant.
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