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Rank 1702 of 3,368

Dennis Gillings net worth

Dennis Gillings's net worth is estimated at $2.4 billion as of 15 Oct 2026, according to Forbes Real-Time Billionaires. The fortune comes mainly from Quintiles.

Industry
Healthcare
Age
82
Self-made
Yes
City
Durham
Source of wealth
Quintiles

Latest estimate

$2.4B

As of 15 Oct 2026, Forbes Real-Time Billionaires

+$206M

+9.4%

vs Mar 2026

History
Healthcare setting, the industry behind this fortune
Healthcare, the industry behind this fortune. Illustration, not a photo of Dennis Gillings.

Dennis's net worth over time

2 dated estimates since 2026

$0 $650M $1B $2B $3B 2026 $2.2B, March 2026, Forbes $2.4B, 15 Oct 2026, Forbes Real-Time Billionaires
As ofNet worthSource
15 Oct 2026$2.4B Forbes Real-Time Billionaires
March 2026$2.2B Forbes

About Dennis Gillings

Dennis Gillings (United Kingdom) has 2 dated net worth estimates in the public record, the latest $2.4 billion as of 15 Oct 2026 from Forbes Real-Time Billionaires. The fortune is tied to Quintiles, which we classify under healthcare. Dennis was born in 1944. The earliest estimate we hold, $2.2 billion, is dated March 2026. That places Dennis at number 1,702 in the current ranking.

Companies linked to Dennis in the public record: IQVIA Holdings, Inc., University of North Carolina at Chapel Hill.

Sources

The description is written by BillionaireList editors from public facts. How estimates are made: methodology.

About Dennis Gillings, common questions

How much is Dennis Gillings worth?
Dennis Gillings's net worth is estimated at $2.4 billion as of 15 Oct 2026, according to Forbes Real-Time Billionaires. That places Dennis at number 1702 in the BillionaireList ranking.

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