Watermark Medical Inc.

Watermark Medical is a B2B medical devices company specializing in cloud-based home sleep diagnostics for obstructive sleep apnea (OSA) detection and management. Founded in 2008 and headquartered in West Palm Beach, Florida, the company has performed over 1.3 million home sleep tests through its flagship ARES™ Home Sleep Test—a disposable, patient-friendly device paired with a virtual platform for data analysis and physician review. The company serves three primary markets: healthcare providers (physician and dental practices, clinics), direct-to-patient services through an accredited independent diagnostic facility, and enterprise clients (employers, institutions, benefit managers) seeking population health sleep solutions. Watermark's cloud-based platform streamlines diagnostic workflows, reduces testing costs relative to traditional in-lab polysomnography, and delivers 96% clinical correlation to laboratory PSG with a documented 1% device failure rate. All tests undergo clinical review by trained sleep technicians and physician oversight. The company maintains a network of 400+ interpreting sleep physicians and serves 75,000+ healthcare providers.