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Session Speakers

Dolly Nguyen Haim Brenneman

Dolly Brenneman is a servant leader, entrepreneur, organizer, development consultant, and an executive coach working to awaken and transform individuals and organizations to soar to new heights.


Her vast experiences in healthcare, banking & investment, insurance, interfaith and community organizations help enriches those she interacts with fresh, creative and unique perspectives. She enjoys matching talents and resources to help diverse stakeholders to succeed in their mission.  She coaches her clients to gain new insights, minimize stress, find new directions, achieve new goals, and what it takes to live the best life that they have been given.

President and Founder

Soaring To Greatness

David Bryson

As a member of the leadership team, David provides strategic leadership and management oversight to Marketing, Business Development, Gas Control, and Planning and Economic Valuation for the transmission and gas storage services and assets across North America.


In his 25 years at Enbridge, David has held various roles across Enbridge’s Liquids and Gas businesses, including asset performance, operations, project development and execution, and customer service with a focus on driving optimal performance while identifying and pursuing new business development opportunities to grow and enhance the business. David has a Mechanical Engineering Degree from the University of Western Ontario and is a graduate of the Harvard Business School’s Advanced Management Program.

Senior Vice President & Chief Commercial Officer,

Gas Transmission and Midstream,


M. Helen Cavazos

Founder and President

M.H.Cavazos & Associates

Helen’s human resources career includes working both in the private and public sector and most recently with non-profit organizations.  She has worked with top 500 companies such as Blue Cross Association in the Chicago area and with McDonald’s Corporation, in Houston, Hawaii and corporate offices in Chicago area.


            She served as Vice President for Human Resources & Chief Diversity Officer at METRO. After METRO, she has been working  as a management consultant with non-profit organizations such as SER Jobs, the Houston Food Bank, Avenue 360 Health & Wellness and HACE – Hispanic Alliance for Career Enhancement. 


            Helen has served on numerous boards in leadership positions both at national and local level. She currently serves in the Houston Mayor’s Hispanic Advisory Board, Executive Committee of The Ronald McDonald’s House Charities Board of Houston/Galveston, the Women’s Initiative Leadership Council of the Anti-Defamation League, the Hispanic Leadership Council for the Houston Symphony and the Advisory Committee of ACAP’s Diversity Summit. Most recently appointed to serve on the Gulf Coast Workforce Board and enjoys serving in an advisory capacity for the non-profit organization Power on Heels and proud member of LULAC Council 60.  

Donna Cole

Cole Chemical is a 41 year old supplier of chemicals and related products with services to industries across the USA. Cole Chemical uses customized supply chain optimization tools to lower the acquisition costs of chemicals, synthetic lubricants, fuels and specialty chemicals for customers. 


Donna says “The Diversity Summit provides important and relevant human effectiveness training to assist Cole Chemical with our employees’, customers’ and suppliers’ relationships.”

President and CEO

Cole Chemical

Dana Dawsey

As Dow Texas operations Leader, Dana is responsible for the plant assets, personnel and ensuring the achievement of global objectives. Dana provides leadership and support through daily actions, and provides coaching and guidance to plant teams and individuals.

As co-lead for Texas Operations Inclusion and Diversity Leadership team, Dana collaborates with a team to lead the journey to foster a workplace in which each employee and contractor at Dow feels respected, engaged and valued in the workplace regardless of their background. She has great passion for Inclusion and Diversity and is also active in all ten Dow ERGs including her service as Chair for Women’s Inclusion Network (WIN) and Recruitment and Engagement Co-Chair for Global African Affinity Network (GAAN). She is also a member of the Society of Women Engineers.


Dana joined Dow in 2016, after having worked for Caterpillar Inc. in various Operations, Supply Chain, Project Management, EH&S and Inclusion and Diversity leadership roles. She holds both a Bachelor of Science degree in Industrial Engineering and a Master of Science degree in Industrial Management both from Northern Illinois University. She is also a certified Six Sigma Black Belt.

Dow Texas Operations Leader & Site Inclusion and Diversity Leader

Dow Chemical

Ryan Ebright

Phillips 66 is a diversified energy manufacturing and logistics company.  An industrial engineer from Kansas State University,


Ryan has 15 years of experience in the downstream business and has recently joined the Inclusion and Diversity team for Global Marketing. 

Sales Manager

Gulf Coast, Branded Marketing,

Phillips 66

Joyce Rehm Eisler

Joyce designs and conducts leadership programs and professional development workshops. She has been a guest speaker at the 2015, 2016, 2018 Annual Texas Diversity & Leadership Conferences, 2015 Live2Lead-Houston, 2019 ATD-Houston Talent Development and the 2019 Women’s Global Leadership Conference in Energy.

Certified Leadership Coach and

Supervisor of Training

Occidental (Oxy)

Shara Hammond

After joining the company in 2007, she has served in progressing HR business partner roles supporting International business units, North American onshore and offshore field operations, corporate organizations, and leading the Talent Acquisition function. With a breadth and depth of expertise spanning the full scope of human resources, her areas of specialty include organizational development, talent management, and leadership development.

Leadership and Inclusion Manager

Marathon Oil Company.

Kelly Kleinkort

Catalyst is a global nonprofit working with leading companies to create inclusive workplaces. She has worked with Fortune 500 companies, foreign governments, nonprofits and institutions of higher education to build bridges of understanding across cultures and peoples and create inclusive environments. She frequently presents on unconscious bias, inclusive leadership and courageous conversations.


Kelly holds a Bachelor of Arts in Speech Communication from Texas A&M University, a Master of Public Administration degree from UNC-Chapel Hill and a language certification from Inner Mongolia University of China, where she lived and worked for three years. She is a Fulbright Scholar as well as a Young Sinologist, a fellowship awarded by the Chinese Academy of Social Sciences.

Director of Corporate Engagement


Roland Manzano

Roland Manzano has a Bachelor of Science from Sam Houston State University with over thirty years of Human Resources experience. His career began in executive recruiting with a local search firm. He is a CPC (Certified Personnel Consultant), certified in Employee and Labor Relations, has worked with companies such as Cap Gemini America, Compaq Computer Corporation, Bank of America, BMC Software and is currently Director of Human Resources/Staffing at METRO (Metropolitan Transit Authority of Harris County) since July of 2003.

HR/Staffing Director


Marius Kotze

Marius was appointed Head of Human Resources Petroleum in September 2019. He is responsible for all Human Resources (HR) Business Partnership activities across the BHP Petroleum Business.   

Marius’ human resources career spans more than 18 years across all resource sectors of BHP in various strategic HR roles. Prior to his current role, Marius was Vice President HR Petroleum, Head of HR Business Partnership in BHP Petroleum.  Marius was also the Head of HR in BHP Potash and prior to that the Head of HR in BHP Copper Olympic Dam.  Marius has worked in South Africa, Australia, Canada and the US. 

Marius is qualified with a Bachelor of Commerce and Degree Honours (Industrial Psychology). 


BHP Petroleum

Pranika Uppal Sinha

Pranika has a passion for developing people, and has been in training and development for over 17 years. Her focus at Oxy includes talent management, leadership development, and inclusion / diversity. Pranika previously worked as a diversity consultant, and is the former President of the Texas Diversity Council, Gulf Coast Chapter. Pranika has a keen interest in mentoring and developing women, and started the women’s network at Oxy in 2013. She also speaks regularly at local conferences on diversity/inclusion and leadership topics.


Pranika holds a B.S. degree from Northwestern University in Environmental Engineering, and an MBA from Rice University. She is a Corporate Fellow with University of Houston, Downtown - MBA program and periodically co-teaches talent management. Pranika is also a graduate of Leadership Houston, Class XXXIV.

Senior Manager, Talent Development & Inclusion
Occidental (Oxy)

Amanda Scott

Amanda started her career working on US Political campaigns, in 5 different states, focused on electing women at all levels, from Presidential to Gubernatorial to local city government races in Houston. Amanda has experience in the Healthcare, Construction and Energy industries. She has expertise in many facets of HR, including Diversity and Inclusion, Employee Relations, Talent Acquisition, Management Strategy, and Organizational Development. A native Houstonian, she loves living here with her husband, daughter, and three fur-babies.

Specialist Diversity & Inclusion


Deborah Wilkins Buford

Senior Equal Opportunity Consultant


Deborah has been working with Shell Oil Company since 1997.  In total, she has over 37 years of varied Human Resources experience in employee relations, diversity management, facilitation and training, and Equal Employment Opportunity (EEO).


Her Diversity and Inclusion (D&I) experience includes leading regional and global implementation of D&I plans and providing strategic guidance to staff, senior and mid-level management regarding D&I issues. She now serves as the Senior Equal Opportunity Consultant for Shell, with responsibility for EEO compliance and oversight of Shell’s US Employee Resource Groups. 


Deborah graduated from the Pennsylvania State University with a Bachelor’s degree from the College of Human Development.  She holds SPHR certification and completed the National Training Labs - Diversity Practitioner Certificate Program.  She resides in Sugar Land, TX with her husband, Gordon.

Shea Bible

Blue Topaz is an HR Services company that brings clarity and creativity to the HR challenges facing businesses and leaders today. 


Shea’s career spans over two decades in the oil and gas and utilities industries in various senior Human Resources leader roles.  Shea has global and regional expertise in aligning business and HR strategy to improve company performance and employee engagement.  As President of Blue Topaz Consulting, Shea is excited to help others make a bold move to their grandest vision!


Blue Topaz Consulting

Cheryl Guido

Cheryl Guido has over 20 years of professional experience working with individuals with disabilities, and has held a variety of positions in counseling and case management.  Cheryl oversees multiple programs such as Vocational Rehabilitation, Transition, and Independent Living Services.  Additionally, she works in various community leadership roles partnering with local businesses to develop strategies for hiring qualified applicants with disabilities.


Prior to assuming the duties of a Vocational Rehabilitation Manager, Cheryl  was a Field Director, Vocational Rehabilitation Counselor, Transition Program Specialist, General Program Specialist and Area Manager.

Vocational Rehabilitation (VR) Manager

Gulf Coast Central Unit

Texas Workforce Solutions Vocational Rehabilitation Services

Marius Kotze

Marius was appointed Head of Human Resources Petroleum in September 2019. He is responsible for all Human Resources (HR) Business Partnership activities across the BHP Petroleum Business.   

Marius’ human resources career spans more than 18 years across all resource sectors of BHP in various strategic HR roles. Prior to his current role, Marius was Vice President HR Petroleum, Head of HR Business Partnership in BHP Petroleum.  Marius was also the Head of HR in BHP Potash and prior to that the Head of HR in BHP Copper Olympic Dam.  Marius has worked in South Africa, Australia, Canada and the US. 

Marius is qualified with a Bachelor of Commerce and Degree Honours (Industrial Psychology). 

VP Human Resources

BHP Petroleum

Sandhya Rao

First Vice-President


Sandhya grew up in Houston and attended Rice University where she graduated  Magna Cum Laude,  1991 with a Bachelor of Arts in Psychology and Behavioral Science. In June 1994, she received her Doctor of Jurisprudence from the Stanford University Law School. She was Admitted to the State Bar of Texas, in November 1994.

Since September 1995, she worked as a staff attorney in the U.S. District Court for the Southern District of Texas, Houston Division, conducting legal research. Because of her  brittle bone condition, she uses a wheelchair, only has marginal vision in her left eye.

She serves in the following leadership positions: First Vice President of the I Blind Users Group; Secretary of the Federal Section of the Houston Bar Association; Member, Board of Directors of the Lighthouse of Houston; Chair, Stanford Law Alumni Association of Houston Chapter; Member, Stanford Alumni Association of Houston; Secretary, Braille Revival League; Member, Houston Counsel for the Blind.

LloyLd vLan Lloyd van Oostenrijk

Lloyd graduated magna cum laude from both Iowa State University (2001) and the University of Houston Law Center (2006).  Prior to attending law school, Lloyd worked as an investigator and paralegal with the Iowa Civil Rights Commission.  His publications include Paper or Plastic? Electronic Discovery and Spoliation in the Digital Age, 42 Hous. L. Rev. 1163 (2005) and Disclosure of Privileged Material: Waive Your Expert Goodbye, 7 Expert Evidence Rep. 16 (2007).  While in private practice, Lloyd represented both employers and employees in employment law matters.

Trial Attorney in the Houston District Office

U.S. Equal Employment Opportunity Commission.