Home›People›Lori Simpson
LS

Lori Simpson

Managing Principal and director at Langan Engineering, Environmental, Surveying, Landscape Architecture & Geology, D.P.C..

ExecutiveDirector
Updated Nov 10, 2026·Latest SEC filing Apr 21, 2026·Suggest an edit

About Lori Simpson

Lori Simpson is a managing principal and director at Langan Engineering, Environmental, Surveying, Landscape Architecture & Geology, D.P.C..

Experience

This experience comes from Lori Simpson's profile and from SEC filings. For roles taken from filings, the years are when the filings name Lori Simpson in the role, so the role may have started earlier or lasted longer.

Deep Foundations Institute Current
Treasurer & Trustee
2024 – Present
Langan Engineering, Environmental, Surveying, Landscape Architecture & Geology, D.P.C. Current
Managing Principal and director
2010 – Present · Parsippany, NJ
Engineering and environmental consulting for developers, property owners, public agencies and energy companies.
Treadwell & Rollo, Inc.
Principal
1990 – 2010
Daniel B. Stephens & Associates, Inc
Staff Engineer
1989 – 1990
Earth Systems Consultants
Intern
1986 – 1987

Key Colleagues at Startups

The people Lori Simpson works with at each company, as listed on that company's latest Form D.

CH
Chris Hager
Executive officer
AP
Alan Poeppel
Managing Principal and director
RJ
Robert Johnston
Executive Officer and Director
GE
Gregory Elko
Executive Officer and Director
WB
Walter Bogardus
Executive officer
DG
David Gockel
Executive Chair
GL
George Leventis
Managing Director
MG
Marc Gallagher
Executive officer
RF
Rudolph Frizzi
Executive officer
RB
Richard Burrow
Managing Principal and director
RF
Ronald Fuerst
Executive officer
RL
Ryan Linthicum
Next CEO and director
MB
Michael Burke
Executive officer
DH
Donald Hodson
Executive officer

Sources

  1. SECLangan Engineering, Environmental, Surveying, Landscape Architecture & Geology, D.P.C. Form D, filed Apr 21, 2026