10 Williams legal leaders
Senior vice president and general counsel, vice president and assistant general counsel, and chief ethics and compliance officer titles in corporate governance, transmission, regulatory and compliance, and strategic development work are held today by these Williams legal leaders. A reader can learn how legal leaders work at Williams from people who have held the role.
Professionals to explore
Bob Riley
LinkedInExperience: Vice President & Assistant General Counsel - Corporate Secretary & Corporate Strategic Development · Williams
Bob Riley has been Vice President & Assistant General Counsel - Corporate Secretary & Corporate Strategic Development at Williams since October 2019, based in Tulsa, Oklahoma. Bob Riley's headline lists Asst. General Counsel, Vice President, Corporate Secretary, Labor and Employment (Legal), which points to work on corporate governance and labor and employment matters.
John Gammie
LinkedInExperience: Vice President, Assistant General Counsel · Williams
John Gammie was Vice President, Assistant General Counsel at Williams from 1992 to 2022, with a headline of Retired Vice President, Assistant General Counsel at Williams, based in Tulsa, Oklahoma. John Gammie's profile lists no other employer, so it offers the view of someone whose legal work was spent inside the Williams legal department.
Karissa Cottom
LinkedInExperience: VP Assistant General Counsel - Corporate Strategic Development, Power Innovation, Upstream, & PAC · Williams
Karissa Cottom has been VP Assistant General Counsel - Corporate Strategic Development, Power Innovation, Upstream, & PAC at Williams since May 2026 and also lists Board Member at the Oklahoma Board of Bar Examiners since 2025. Karissa Cottom was Vice President Assistant General Counsel - Litigation & Operations Services at Williams from 2022 to 2025 and Managing Attorney - Corporate Litigation & IT there from 2015 to 2022, with a profile describing a trial lawyer for energy disputes.
Laura Hill
LinkedInExperience: Vice President Assistant General Counsel-Regulatory & Compliance Chief Ethics & Compliance Officer · Williams
Laura Hill has been Vice President Assistant General Counsel-Regulatory & Compliance Chief Ethics & Compliance Officer at Williams since March 2022 and was Vice President & Assistant General Counsel, Operations Services there from 2020 to 2022. Laura Hill was Senior Counsel Environmental, Health & Safety and Permitting at Williams from 2012 to 2020 and Litigation and Environmental Attorney at GableGotwals from 2009 to 2012.
Mark Denny
LinkedInExperience: Vice President - Assistant General Counsel · Williams
Mark Denny has been Vice President - Assistant General Counsel at Williams since May 2026, based in Tulsa. Mark Denny was Executive Vice President - General Counsel & Secretary at Vital Energy from 2023 to 2025, Senior Vice President & General Counsel there from 2019 to 2023, Vice President - General Counsel there from 2018 to 2019 and Vice President - Assistant General Counsel there from 2016 to 2018.
Sarah Miller
LinkedInExperience: Senior Vice President and General Counsel · Williams
Sarah Miller was Senior Vice President and General Counsel at Williams from 2000 to 2017 and has been President and CEO at GPA Midstream Association since October 2024, based in Tulsa, Oklahoma. Sarah Miller was Shareholder at Hall Estill from 2017 to 2024 and Litigation Associate at Crowe Dunlevy from 1997 to 2000.
Steve Seibert
LinkedInExperience: Vice President and Assistant General Counsel · Williams
Steve Seibert was Vice President and Assistant General Counsel at Williams from 2013 to 2020 and Senior Counsel there from 1997 to 2013, with a headline of Assistant General Counsel at Williams (retired), based in Pittsburgh, Pennsylvania. Steve Seibert was Staff Attorney at HBE Corporation from 1991 to 1997.
T. Lane Wilson
LinkedInExperience: Senior Vice President and General Counsel · Williams
T. Lane Wilson has been Senior Vice President and General Counsel at Williams since April 2017, based in Tulsa, Oklahoma. The profile places the role in the Legal department at the President/Vice President level and lists no other employer in its work history, so the Williams role is the full record shown for T. Lane Wilson.
Tony Gehres
LinkedInExperience: Assistant General Counsel · Williams
Tony Gehres was Assistant General Counsel at Williams from 1991 to 2015, with a headline of Vice President and Assistant General Counsel at The Williams Companies, Inc., based in Tulsa, Oklahoma. Tony Gehres was Partner and Associate at Conner & Winters, LLP from 1982 to 1991 and has been a community volunteer and urban farmer in retirement since April 2015.
Tyler Evans
LinkedInExperience: Vice President & Assistant General Counsel Transmission, Power & Gulf · Williams
Tyler Evans has been Vice President & Assistant General Counsel Transmission, Power & Gulf at Williams since May 2026, based in Houston, and was Vice President & Assistant General Counsel Corporate Development, Sequent & Power Innovation there from 2025 to 2026. Tyler Evans was Managing Attorney Corporate Strategic Development at Williams from 2023 to 2025, Senior Counsel Corporate Strategic Development there from 2018 to 2023 and Senior Attorney & Assistant Corporate Secretary there from 2017 to 2018.
Choose the right perspective
Match the person's practice area, such as corporate secretary and governance work, pipeline and power transactions, regulatory and compliance, or litigation, to the decision you face. Check whether the legal role is current or ended, and when, to judge how recent their view is.
Questions to take into the conversation
- 01What did you change first when you took on your current legal role, and why?
- 02How do you decide which legal work stays in house and which goes to outside counsel?
- 03What has your own work taught you about the legal side of getting a new interstate pipeline project approved?
Reaching Williams 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; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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