Oil and gas
10 ExxonMobil legal leaders
These ten current and former ExxonMobil legal leaders include its general counsel, assistant general counsels and managing counsel who have led corporate, litigation, chemical, low carbon and regional legal work. A reader can learn how ExxonMobil's legal leaders build and run their teams across a large energy company.
Professionals to explore
01—10Estuardo R. Sierra
LinkedInExperience: Assistant General Counsel · ExxonMobil
Assistant General Counsel at ExxonMobil since 2026. Former ExxonMobil roles include Managing Counsel - Litigation (2023–2026), Managing Counsel - Corporate Strategic Planning (2021–2023), Managing Counsel - Downstream (2018–2021) and Assistant Chief Attorney - Production Company (2016–2018).
Gwendolyn Dawson
LinkedInExperience: Managing Counsel, Low Carbon Solutions · ExxonMobil
Managing Counsel, Low Carbon Solutions at ExxonMobil since 2026, where the profile says she manages a team of lawyers handling legal needs for the Low Carbon Solutions business, including carbon capture and storage and lithium. Former ExxonMobil roles include Managing Counsel, Technology & IP (2022–2026) and Managing Counsel, Litigation - International Disputes (2020–2021).
Jeffrey Taylor
LinkedInExperience: Vice President, General Counsel & Secretary · ExxonMobil
Vice President, General Counsel & Secretary at ExxonMobil since 2024. The profile also lists Executive Vice President and General Counsel at Fox Corporation from 2021 with no end date, and former roles as Deputy General Counsel & Chief Compliance Officer at General Motors (2015–2019) and VP & GC at Raytheon Integrated Defense Systems (2010–2015).
JoAnn Lee
LinkedInExperience: Associate General Counsel Senior Member, ExxonMobil Law Leadership Team D&I Champion · ExxonMobil
Former Associate General Counsel and senior member of the ExxonMobil Law Leadership Team (2018–2020). Former ExxonMobil roles also include Assistant General Counsel, Global Litigation (2009–2018), Chief Attorney for the Exxon Mobil Chemical Company Commercial Group (2008–2009) and Chief Attorney, Labor, Employment, and Special Services Group (2004–2008).
Joseph Ope
LinkedInExperience: Asia Pacific Regional General Counsel · ExxonMobil
Former Asia Pacific Regional General Counsel at ExxonMobil (2012–2026), where the profile says he led the legal function across the Asia Pacific region with responsibility for a 55+ member team. Chief Legal Officer at JERA Global Energy Solutions since 2026.
Joseph Walsh
LinkedInExperience: General Counsel - Downstream Companies and Assistant General Counsel · ExxonMobil
Former General Counsel - Downstream Companies and Assistant General Counsel at ExxonMobil (2007–2024), now Partner at Duane Morris LLP since 2024. The profile says he held several global positions managing lawyers across ExxonMobil's core legal areas, including environmental, regulatory and commercial work.
Justin Anderson
LinkedInExperience: Assistant General Counsel for Litigation · ExxonMobil
Assistant General Counsel for Litigation at ExxonMobil since 2023. Former Partner at Paul, Weiss, Rifkind, Wharton & Garrison LLP (2015–2023), former Assistant U.S. Attorney, Deputy Chief of Appeals at the United States Attorneys' Offices (2009–2015), and former Law Clerk to Judge Jose A. Cabranes (2008–2009).
Matt Rasmussen
LinkedInExperience: Assistant General Counsel - Corporate · ExxonMobil
Assistant General Counsel - Corporate at ExxonMobil since 2024. Former ExxonMobil roles include Managing Counsel - Upstream (2022–2024), Managing Counsel - Mergers, Acquisitions & Divestments (2021–2022) and Managing Counsel - Upstream Commercial & Operations (2020–2021).
Robert Wood
LinkedInExperience: Managing Counsel - Global Operations, Environmental & Regulatory, and Property Solutions · ExxonMobil
Managing Counsel - Global Operations, Environmental & Regulatory, and Property Solutions at ExxonMobil since 2025. Former ExxonMobil roles include Managing Counsel - Environment, Regulatory, Property and Business Solutions (2023–2025), Managing Counsel - International Disputes in Belgium (2021–2023) and Head of Strategic Legal Issues - Europe Region (2020–2021).
Shawn Foster
LinkedInExperience: Managing Counsel - Chemical Products, Specialty Products and Ventures · ExxonMobil
Managing Counsel - Chemical Products, Specialty Products and Ventures at ExxonMobil since 2025. Former ExxonMobil managing counsel roles cover Chemical Products, Global Operations and Product Solutions Ventures (2023–2024), Chemical Products, Operations and M&A (2022–2023) and IP Licensing and Chemical Technology (2018–2021).
Choose the right perspective
Match the person's practice area to your question: a litigation leader, a managing counsel supporting one business line and a regional general counsel each see different problems. Check whether the relevant role is current or past so their experience matches the period you care about.
Questions to take into the conversation
- 01How does a large energy company organize legal support between global practice groups and business lines?
- 02What does an in-house litigation team handle directly, and when does it bring in outside counsel?
- 03How do lawyers supporting new businesses, such as low carbon ventures, approach risks the company has not faced before?
Reaching ExxonMobil legal leaders
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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