Dennis Gillings

Dennis Gillings

Dennis Gillings (#1916)

  • $ 2 B
  • Clinical trials
  • United Kingdom
  • M
  • 82 Years

About Me

Dennis Gillings is the founder and former CEO and chairman of clinical research firm Quintiles Transnational, which changed its name to IQVIA in 2017. Gillings, a former biostatistics professor, launched Quintiles in 1982 with the goal of making clinical trials for drugs faster and more efficient. Gillings retired from the board of IQVIA in 2018. Quintiles reached annual revenues of $5.7 billion before merging with healthcare data firm IMS Health in 2016.
About Images

Achievements

Career Highlights

A snapshot of the defining milestones, leadership decisions, and breakthroughs that shaped Dennis Gillings’s rise and global influence.

  • #1913   Billionaires (2026)

Wealth Growth

Net Worth Growth Over Time

Tracking Dennis Gillings’s net worth journey over the years, highlighting key growth phases and financial milestones.

Current Net Worth: $2.2B (May 4, 2026)