8-KItem 8.01 · Other Events
Quest Diagnostics Reports Unauthorized Access to Quanum LSM System
Filed with the SEC on · Summarized by InvestorsBot
Quest Diagnostics said on October 21, 2026, that an unauthorized party accessed its Quanum LSM system, which clients use to order tests and view results, and that certain patient records may have been accessed. The company notified federal law enforcement and hired external cybersecurity experts; it said the incident has not materially disrupted operations, while the investigation into its full scope continues.