SoftBank has led a series B round for advertising and data analytics company Cinarra, which follows a $4.5m Cisco-backed series A round in 2013.

US-based advertising technology provider Cinarra Systems raised $20m in a series B round led by telecommunications company SoftBank yesterday.

Venture capital firm Almaz Capital and private equity firm Siguler Guff & Company also took part in the round. As part of the investment, SoftBank and Cinarra have partnered to bring the latter’s technology to SoftBank’s clients in Japan by launching a targeted advertising platform.

Cinarra operates an advertising and data analytics platform for mobile operators, enabling enterprise customers to use…