Ionis Pharmaceuticals IncInvestigation for securities fraud and failed Phase-3 trial causing 23.9% stock drop
Pomerantz LLP is investigating claims on behalf of investors of Ionis Pharmaceuticals, Inc. The investigation concerns whether Ionis and certain of its officers and/or directors have engaged in securities fraud or other unlawful business practices. On July 9, 2026, Ionis disclosed that the late-stage Phase-3 CARDIO-TTransform trial of Wainua, an amyloid cardiomyopathy treatment developed in collaboration with AstraZeneca, did not meet its primary endpoint. On this news, Ionis’s stock price fell $20.19 per share, or 23.9%, to close at $64.27 per share on July 9, 2026. Investors are advised to contact Danielle Peyton at newaction@pomlaw.com or 646-581-9980, ext. 7980.
Ionis Pharmaceuticals IncInvestigation for securities fraud and failed Phase-3 trial causing 23.9% stock drop
AstraZeneca PLCCollaboration drug Wainua failed Phase-3 trial, impacting AstraZeneca's pipeline