The phrase "principal shareholder" refers to the person or entity that owns the largest portion or majority of shares in a company. They have significant control and influence over the company's decisions and direction. Full definition
In addition, Elon is the non-executive chairman and principal shareholder of SolarCity, which he helped create. (edisonawards.com)
«Having gone around lecturing other shareholders to take an active role in ensuring pay restraint in the country's boardrooms and the City, the prime minister has failed to practice what he preaches when it comes to the government's role as principal shareholder in RBS. (politics.co.uk)
Principal shareholders include Lightspeed Venture Partners, which owns 23 % of the company, and Khosla Ventures, with a 10.9 % stake. (fortune.com)