Sierra Ventures is a venture capital firm based in Silicon Valley focused on early-stage technology companies. They specialize in the Next Generation Enterprise and Emerging Technologies sectors. The firm has a hands-on approach, working closely with entrepreneurs to help them effectively scale their businesses.

Portfolio companies:

1. Zimperium: Mobile security for enterprises.
2. InvenSense: Provider of MotionTracking™ sensor system on chip (SoC) and Sound solutions for consumer electronic devices.
3. Greenplum: Large-scale data platform that allows companies to easily conquer their most demanding big data analytics challenges.
4. Treasure Data: Global leader in Enterprise Data Management.