About Henry Hamilton, III
Henry “Hank” Hamilton chairs TGS and serves on the boards of Geophysical Technology and Global Geophysical Services. He also chairs Defy Ventures.
He led TGS as chief executive officer from 1995 to 2009. Earlier, he worked as a Shell geophysicist and led Schlumberger's geophysical product lines in the Americas.
Experience
This experience comes from official bios and from SEC filings. For roles taken from filings, the years are when the filings name Henry Hamilton, III in the role, so the role may have started earlier or lasted longer.
Geophysical Technology Inc. Current
Director
2015 – Present · Stafford, TX
GTI makes and leases nodal seismic recording systems for land, transition-zone and shallow-water surveys.
TG
TGS Current
Chief executive officer (1995 – 2009)
Chairman
1995 – Present
DV
Defy Ventures Current
Chairman
IC
International Association of Geophysical Contractors
Director
1993 – 2011
SC
Schlumberger
Vice president and general manager for geophysical product lines in North and South America
1987 – 1995
SO
Shell Offshore
Geophysicist
1981 – 1987
OD
Odfjell Drilling
Director
SF
Society of Exploration Geophysicists Foundation
Director
UF
University of North Carolina Arts & Sciences Foundation
Director
Key Colleagues at Startups
The people Henry Hamilton, III works with at each company, as listed on that company's latest Form D.
Geophysical Technology Inc. · Form D, Oct 26, 2026
Richard Degner
Chief Executive Officer and Director
Stephen Trauber
Director
CL
Craig Lindberg
Executive Officer and Director
SM
Stephen Meadows
Director
KJ
Kenneth Juncker
Director
Nicole Moss
General Counsel and Secretary
Alec Huval
Chief Financial Officer
Global Geophysical Services, Inc. · Form D, Dec 29, 2023
KJ
Kenneth Juncker
Director
Nicole Moss
Executive officer
CL
Craig Lindberg
Director
SM
Steven Meadows
Director
Richard Degner
Director
LS
Larry Scott
President and director
BL
Brett Lamensky
Executive officer
Stephen Trauber
Director