Alexandria Gerbasi

Alexandria Gerbasi earned a Bachelor of Arts from the University of Texas, Austin. She is currently the Chief Administrative Officer of OVS Group, LLC, an upstream software and service company. Alexandria began her career in the oil and gas industry at OVS Group. She has been integral in building the internal financial, administrative and human resource systems of the company to help guide OVS Group from a startup to a company supporting clients and employees across 20 countries.  In 2019, Alexandria Gerbasi was named an honoree in the Houston Business Journal’s Top 40 under 40 for her work at OVS Group and for her role as the co-founder of the Oil & Gas Trafficking Awareness Group (OGTAG).  

Alexandria lives in the suburbs of Houston with her amazing husband and 3 beautiful children. She serves as a connect group leader at her church, Hope City, and a prayer leader at the Great Southwest Prayer Center. She is also a defender for Love People Not Pixels, the anti-trafficking organization where her husband works as the Outreach Coordinator.


Jennifer Hohman

Jennifer Hohman is a wife and mom to two growing boys. Along with a passion for her community, she managed to obtain 25 years of experience in the energy and technology industries. Jennifer strives to be a leader that listens to her peers. She enjoys building high performing teams tasked with figuring out what their colleagues need to accomplish, and how technology and new ideas can help get it done! These days, that is much easier than raising teenagers! 

Jennifer has been blessed to work with colleagues and partners at Halliburton, Hewlett Packard, ConocoPhillips and now serves as the Chief Information (Inspiration) Officer at Seadrill, an innovative shallow to a deepwater drilling company.  During her experiences working with oil and gas operators, services companies and a tech firm she has learned to take a pragmatic look at innovative trends and lead with the business problem or opportunity in mind to deliver efficiencies or new business capabilities. #RealTalk #RealSolutions #RealResults 

In 2016, sex trafficking got too close to home. In her words, "It woke me the hell up to one of the most complex epidemics my city has ever seen!" She started collaborating with 30+ anti-sex trafficking nonprofit leaders in the Houston area to understand the services, gaps and areas that needed strengthening, thus was formed, the Houston Area Against Trafficking Initiative (HAAT) which meets at her house every month.   

She is now trying to wake a sleeping giant, her community, and is a community leader and advocate for victims and survivors determined to create massive awareness regarding prevention, intervention, and recovery via community uprising and corporate involvement. To do so, a group of the top 20% of influential Houston leaders is coming together to get behind this movement, they are The Houston 20!  

In order to engage the corporate community, Jennifer and other business colleagues co-founded the Oil and Gas Trafficking Awareness (OGTAG) group, which includes 20 operators and 25 service companies, to collaborate on ideas and initiatives to mobilize the energy industry to join the fight against sex trafficking. Recently, OGTAG conducted an industry-wide awareness event in 5 areas of the City of Houston.

Jennifer resides in Memorial with her husband, two boys, and two dogs. She serves on the boards of Elijah Rising and Hope Rising. 


David Reid

Mr. Reid is the Chief Marketing Officer for NOV, where he develops the global market and strategic engine. David joined Varco International in 1992 and has lived in Scotland, California, and Houston covering global roles in service, operations, design, business and product development, leadership, and management. David has influenced modern rig and equipment design and the pioneering of drilling automation and oilfield digitization. He serves on the NOV and Schlumberger IntelliServ Joint Venture Board and is a Technical Director on the SPE Board. 

Outside of oil and gas, David is a board member for Redeemed, Houston’s longest running trauma-informed recovery program for adult women survivors of sex trafficking, and serves as an advisor in OGTAG (Oil and Gas Trafficking Awareness Group.)  He has also pioneered RedM, a Houston-based organization of pro-bono, crowdsourced professionals who give of their skills and talents to help focused, efficient, high investment recovery groups, which hosts regular Red Talks, to network professionals and provide inspiring speakers. 



Mr. Clark is the Chief Commercial Officer of Stupp Corporation where he has served since May of 2011. John leads Stupp Corp’s commercial operations & strategy, organizational development, M&A activities, and delivering overall business growth. He also serves on the Board of Directors for SPOT Traceability.

Prior to joining Stupp, he worked for 17 years in automation, controls, and enterprise software serving in a few executive roles with both Honeywell Process Solutions and Emerson Process Management concluding his tenure in the technology arena as Honeywell’s Vice President of Sales, Americas.  

In his personal time John is a human trafficking abolitionist driving four strategic initiatives:

  • Preventing sex trafficking by raising awareness 
  • Promoting legislation that protects victims and brings justice to criminals
  • Developing long term, trauma-informed, treatment & healing solutions for survivors
  • Helping survivors sustain productive, free and independent lives

In addition to his role on the OGTAG advisory board, John is the founder of Operation Texas Shield, a co-founder of Houston Area Against Trafficking, a founding board member of The Refuge for DMST, and a founding member of The Houston 20.  


Mary Ellen Weylandt

Mary Ellen Weylandt is the Community Engagement Lead for Marathon Oil. She's responsible for designing and implementing strategic programs to address social issues in the communities where Marathon Oil does business – both in Houston and across the United States. Prior to joining Marathon Oil in July 2019, Mary Ellen served in similar roles at ConocoPhillips and Occidental Petroleum. 

Mary Ellen is an active volunteer in the Houston community, volunteering with organizations such as the Houston Livestock Show and Rodeo, Big Brothers Big Sisters, and Elijah Rising. She previously held a leadership role with United Way of Greater Houston’s L.I.N.C. initiative – a group for United Way’s members under 30 years of age. Mary Ellen has also spent significant time volunteering in South America. 

Mary Ellen earned her bachelor’s degrees in Business Administration and Exercise and Sports Science from the University of North Carolina at Chapel Hill.


Dr Karin Witton

Karin leads the development and implementation of sustainability strategies for Halliburton worldwide. 

Karin has over 30 years of leadership roles in sustainability and environmental management. She came to Halliburton after having spent over 7 years as the Global Environmental and Sustainability Director for Weatherford International. She has worked both in house and as a consultant for a wide variety of public and private organizations across the globe in virtually all sectors including oil and gas E&P and service companies; mineral extraction companies; the armed services; industrial manufacturers; utility companies; and wastes handling and disposal organizations. 

From her early years managing contaminated land remediation projects and trouble-shooting wastewater treatment systems, she progressed to the development of formal environmental management programs, systems, and strategies. For the last 15 years, Karin has focused primarily on the development and implementation of integrated sustainable management practices. She is heavily involved in O&G associations such as SPE (HSSE-SR), the National Ocean Industries Association (NOIA) ESG group, the Houston CSR Roundtable, and the Oil and Gas Trafficking Awareness Group (OGTAG).

She holds a PhD in Environmental Science from the University of Kent, UK and a BSc in Microbiology from University College London. She is married with two teenagers and is trying to write a book (or two). 


Kristin Koblis

Ms. Koblis works for the Harris County Department of Public Health as their Chemical, Radiation, and Biological Emergency Response Planner.  Prior to that, she worked for 28 years as a Health, Safety and Environmental professional in the oil and gas industry. Human trafficking is a public health problem. It impacts the victim's health and wellbeing. When “johns" engage in sex trafficking, they are contributing to the spread of sexually transmitted diseases. 

She has a Bachelors degree in Toxicology from Northeastern University in Boston, Massachusetts.  In addition, Ms. Koblis is currently on the board of the Zonta Club of Houston whose mission is to empower women through service and advocacy including anti-human trafficking initiatives. She also volunteers with The Women’s Home, BakerRipley and the Women’s Fund.