At the age of 14, Joshua Haupt woke up in an ambulance. He was supposed to be in school, but he had suffered a seizure at the breakfast table. Later that day, Haupt was diagnosed with epilepsy.

That diagnosis eventually led Haupt down the path to become an entrepreneur in the cannabis industry. Today, Haupt, 32, is worth millions, including a 16 percent stake in Medicine Man Technologies.

Haupt, who lives in Denver, made his fortune after selling a cannabis guidebook company, Pono Publications, and marijuana nutrient line, Success Nutrients. In 2017, he sold both companies to cannabis consulting firm Medicine Man Technologies, for 7 million shares in Medicine Man. Haupt personally owns 4.4 million shares in Medicine Man, according to May 2017 SEC filings, which are currently worth about $9 million. (Medicine Man Technologies is a penny stock that trades on the over-the-counter market, which has less stringent requirements for listing than blue chip indexes and is typically a more volatile market.)

– Read the entire article at CNBC News.