Sleep.ai announced $5.3 million in new funding on November 11, 2026, to support new partner integrations, expansion in Germany and other markets, and development of its AI-based predictive health models. Treasure Coast Ventures led the investment, with participation from the Harvard Business School Alumni Angels of Greater NY and other investors. Sleep.ai reports that it has collected and analyzed more than 1.1 billion hours of real-world sleep data, measured longitudinally, night after night…