Amprius Technologies stock fell nearly 6% over the two trading days following a May 20, 2026, Manatee Research report, which alleged that the company exaggerated customer orders, overstated the quality and scale of its contract manufacturing network, and relied on aggressive bill-and-hold revenue arrangements to support its growth narrative. The report also alleged that Amprius’s manufacturing partners include troubled or unproven entities and raised concerns about the company’s relationship with Berzelius, a Chinese supplier connected to Amprius’s former CEO and current director. Block & Leviton is investigating.
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