GRAIL, LLCSecurities fraud class action lawsuit filed after trial failure disclosure caused 50.5% stock drop.

Glancy Prongay Wolke & Rotter LLP reminds Grail, Inc. shareholders of an August 4, 2026 deadline to move for lead plaintiff in a class action covering purchases of Grail common stock between May 13, 2025 and February 19, 2026. The suit follows Grail's February 19, 2026 disclosure that its NHS-Galleri Trial did not meet the primary endpoint of statistically significant Stage III-IV cancer reduction, partly because longer follow-up may be needed. On that news, Grail's stock fell $51.32, or 50.5%, to close at $50.21 per share on February 20, 2026. The complaint alleges that defendants made materially false or misleading statements and failed to disclose that management's confidence in earlier positive top-line results ignored trendlines suggesting three years would be insufficient to demonstrate the primary endpoint.
GRAIL, LLCSecurities fraud class action lawsuit filed after trial failure disclosure caused 50.5% stock drop.