Pipedrive, the sales CRM tool for small and medium-sized businesses, is the latest European company to reach unicorn status. Founded in Estonia and now headquartered in New York, the company has taken a majority investment from U.S. enterprise software focused private equity firm Vista Equity Partners. This means that Vista has effectively acquired Pipedrive, in the sense that the PE firm now has a majority stake. Multiple sources with knowledge of the deal tell TechCrunch the transaction values Pipedrive at $1.5 billion dollars. The official announcement also makes mention of unicorns.