Gravity4

Defunct

San Francisco, California, United States · Founded 2014

51-200 employees

Sourced & current · updated May 11, 2026

Defunct ad-tech holding company founded 2014 by Gurbaksh Chahal as a serial acquirer. Acquired Triggit (March 2015, native programmatic DSP) along with several other ad-tech firms. Gravity4 itself ceased operations following Chahal's legal issues. Stub created during session 163 drift sweep.

Where they sit

Stack tier: Infrastructure & Data (B)

Demand Side Platform (DSP)Data Management PlatformProgrammatic Platform

A minor, short-lived roll-up player in the programmatic AdTech space that failed to achieve meaningful scale before collapsing