AmerisourceBergen Board Hit With Novel Ruling on Opioid Claims

AmerisourceBergen Corp.'s board is back in the legal crosshairs for its handling of opioids after Delaware’s top court handed down a novel ruling reviving investor litigation over the drug distributor’s role in fueling the nationwide addiction epidemic.

The state supreme court breathed new life into the case late Monday, reinstating claims that AmerisourceBergen’s leaders ignored years of red flags about its handling of addictive prescription painkillers and failed to set up internal reporting systems for monitoring the company’s compliance with anti-"pill mill” protocols.

Justice Gary F. Traynor, writing for the unanimous five-member tribunal, said a judge on Delaware’s Chancery Court ...