Law firm investigates TransMedics after margin pressure and investment disclosures hurt stock price

Johnson Fistel, PLLP is investigating TransMedics Group, Inc. following the company's Q1 2026 financial report that showed declining operating margins and increased expenses due to investments in growth and supply chain costs. Despite revenue growth, TransMedics warned adjusted operating margins would remain below 2025 levels, causing a sharp stock price drop. The investigation aims to determine if TransMedics complied with federal securities laws and if investors who suffered losses can recover them.