Livongo

founder: glen tullman (ceo) Equity raised: $142 million Estimated 2017 revenue: $36 million

Lead investors: general catalyst, kleiner perkins caufield & byers, microsoft ventures

What it does: sells a service that helps diabetics manage their disease. launched in 2014 in mountain view, california, the company makes a glucose monitor that sends patients’ insulin levels to the cloud, where its technology returns results and treatment instructions to the monitor’s screen. when a reading indicates a serious health threat, a livongo diabetes specialist calls the patient within 90 seconds. most of its 200-plus customers are self-insured employers, including at&t, boeing and exxon mobil. a veteran ceo and entrepreneur, tullman, 58, has a son who was diagnosed with type 1 diabetes at age eight. tullman’s mother also suffers from the disease.