Organizational Summary
The PASPB body elects a nine person Board of Directors. Each Director seat is a three year term and the Directors will hold various positions during their term. Below you will find the current Board Members and their positions.
PASPB hosts Standing Committees that serve to keep our membership aware of changes to local and national accounting issues of interest. Volunteers serve to chair and staff these committees. Meetings are held on an as-needed basis. The Committee Chairs within PASPB are appointed by the Board of Directors annually. Please see the current Committee Chairs below.
Get in touch
Please e-mail us at info@paspb.com if you have any questions or concerns.
Board of Directors
President
Diana Trejo-Mesa, MSA
F&PA Analyst | ConocoPhillips
Diana Trejo-Mesa is Vice President of PASPB and a Financial Planning & Analysis Analyst at ConocoPhillips. With a strong background in petroleum operations and financial services, Diana has over a decade of experience in the oil and gas industry. She previously led facility services for both Concho and ConocoPhillips, where she developed expertise in cross-functional support, operations, and leadership.
She holds a Master of Science in Finance from the University of Oklahoma and a BBA in Management from the University of Texas of the Permian Basin. Her technical skillset includes petroleum operations, Microsoft Excel, and business analytics.
Diana is passionate about empowering others through education and professional development. She previously served on the COPAS National Planning Committee and is a strong advocate for community and career growth. Outside of work, she enjoys life in Midland with her husband Rick, their four children, and their two dogs and two cats.
Vice President
Clarissa Melise Bretado, MBA
Senior Tax Associate | Whitley Penn
Clarissa Bretado is a tax associate at Whitley Penn LLP in Midland, Texas, with expertise in tax regulation, auditing, and financial compliance. She holds a B.A. in Accounting from Texas State University and an MBA in Business Analytics from Lamar University.
Her experience includes conducting sales tax audits for the Texas State Comptroller and working in public accounting, where she developed strong technical skills and a detail-oriented approach. Clarissa also serves as Vice President for the Petroleum Accountants Society of the Permian Basin (PASPB) and Technology & Social Media Director for the Neighbors Eden Project, reflecting her commitment to professional growth and community impact. She is a proud mother of a six-year-old son, who inspires her daily pursuit of excellence at work and in the community.
Secretary
Victoria Yharte
Senior JIB Accountant | Permian Resources
Victoria Yharte is a Senior JIB Accountant at Permian Resources with over 10 years of experience in the oil and gas industry. She holds a degree in Accounting from the University of Texas of the Permian Basin and previously served as PASPB’s Revenue Committee Chair, as well as a member of the COPAS National Planning Committee.
As Secretary, Victoria brings strong organizational skills, attention to detail, and a deep commitment to supporting the accounting community. Raised in Midland, she is passionate about continuous learning and professional growth. Outside of work, Victoria enjoys family life as a devoted mother to her four-year-old son.
Membership
Dovie Stark
Sr. Plant Analyst – Plant Accounting | Energy Transfer
Dovie Stark is an Accountant with over 25 years of experience in the oil and gas industry, specializing in accounting, revenue accounting, drilling reports, and production. She began her career at the age of 19 with Parker & Parsley and has since worked with several respected energy companies across the Midland-Odessa region.
Dovie currently serves as an Sr Plant Analyst – Plant Accounting for Energy Transfer and earned her bachelor’s degree in accounting from the University of Texas Permian Basin in May 2023. A dedicated PASPB member for the past six years, she has a deep understanding of the industry, a strong work ethic, and a steady commitment to advancing education and professional development through her role on the Education Day Committee for the past two years.
Outside of work, Dovie has been happily married for 34 years and is the proud mother of two daughters and grandmother to five grandchildren.
Treasurer
Crystal Moreno
Analyst, Accounting & Finance | ConocoPhillips
Crystal Moreno brings strong financial acumen and energy industry expertise to her role as Treasurer of PASPB. She currently serves as an Analyst in Accounting & Finance at ConocoPhillips, where she supports strategic financial processes and reporting.
A proud graduate of Texas Tech University, Crystal is based in Midland, Texas, and is passionate about advancing the accounting profession in the Permian Basin through community involvement and professional development.
Technical Speakers
Leslie Parra
Operations Accountant | XRI Water
Leslie Parra is an experienced oil and gas accountant with a background in joint interest billing, OBO accounting, and operational consulting. She began her career with Pioneer Natural Resources and later served in advanced roles with Endeavor Energy Resources and Pecos Energy. In 2025, she was a featured panelist at the SUPER DUG Conference for her contributions to operational efficiency.
Leslie brings deep leadership and outreach experience to PASPB, having served as Chair of the Small Oil and Gas Committee, Social & Community Engagements Chair, and a member of the 2024 National Planning Committee. As Board Member over Technical Speakers, she helps elevate PASPB member’s knowledge through the wonderful speakers she coordinates with.
Passionate about service, Leslie has held key volunteer leadership roles with the Junior League of Midland, Volunteers of Midland, and IMPACT. She is a former board member of the Adult Protective Services Advisory Board and an active member of the Uptown Business and Professional Women of the Permian Basin.
Meeting Arrangements
Katelyn Williams
Right of Way Agent | Lone Star Land Services
Katelyn Williamsserves as PASPB’s Meeting Arrangements Board Member and currently works as a Right of Way Agent with Lone Star Land Services. She earned both her Master of Science in Accounting and her BBA in Accounting from Texas Tech University.
Katelyn began her career as an auditor at Ernst & Young in Austin, where she gained valuable experience in financial reporting and compliance. She later transitioned into the oil and gas industry, working in post-acquisition integration at Endeavor Energy Resources before moving into revenue accounting at David H. Arrington Oil & Gas Operating. Today, in her role at Lone Star Land Services, Katelyn focuses on title research, lease analysis, and supporting negotiations that secure land and mineral rights for oil and gas operations.
Beyond her professional career, Katelyn is a dedicated member of the Junior League of Midland, where she channels her passion for community service into meaningful local initiatives. She brings a sharp eye for detail and a passion for technical development to PASPB’s programming. Outside of work, she enjoys spending time with her two dogs, Moomoo and Charles.
Website & Publicity
Cloe’ Izabella Bretado
Accountant | David H. Arrington Oil & Gas
Cloe Izabella Bretado is an accountant at David H. Arrington Oil & Gas and an MBA student at the University of Texas of the Permian Basin. A CPA candidate with a BBA in Accounting, Cloe brings strong skills in financial analysis, compliance, and event coordination to her role with PASPB.
As Board Member over Website & Publicity, she plays a key role in planning and connections. She also serves as Treasurer of the Neighbors Eden Project, where she oversees financial reporting and regulatory compliance. Cloe’s professionalism, attention to detail, and passion for service make her a valued leader within the PASPB community.
Newsletter/COPAS Accounts
Fausto Mendoza
Assistant Controller | Sand Revolution II
Fausto Mendoza is a seasoned Financial Controller with over a decade of experience in accounting, auditing, and financial operations. He has held leadership roles at companies such as Warrior Technologies, Allied, and Republic Services, where he led month-end closings, improved internal controls, and produced accurate financial reporting.
Earlier in his career, Fausto worked as a Senior Audit Associate at Weaver and Tidwell, where he gained deep expertise in risk assessment and financial analysis. His background also includes experience as a General Manager in a high-volume retail setting, giving him practical insight into business operations.
He currently serves as the board member over Newsletter/COPAS Accounts for PASPB, where he supports and notifies all members of upcoming events in the Permian Basin.
Fausto has been happily married for nearly 20 years and is the proud father of four sons.
Committee Chairs
Committee Chair, PASPB Scholarship Committee
Esmeralda Carreon, MBA
Revenue Accountant | Diamondback Energy
Esmeralda Carreon is an accomplished accounting professional with a strong background in the oil and gas industry. She currently serves as a Revenue Accountant at Diamondback Energy and holds a Master of Business Administration in Accounting from the University of Texas Permian Basin.
With over seven years of experience at companies such as Endeavor Energy Resources, Hi-Crush, and Black Mountain Sand, Esmeralda has developed a broad skill set in revenue accounting, cost analysis, payroll, and operations support. Her attention to detail, strong analytical mindset, and commitment to continuous improvement make her a valuable asset to the PASPB Scholarship Committee.
Esmeralda is passionate about giving back to the community and supporting educational advancement across the Permian Basin.
Co-Chair, Scholarship Committee
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Revenue Committee
Patience Alvarado
Tax Associate | Whitley Penn
Patience is a CPA candidate with a Master of Accountancy and a professional background that began in billing before transitioning into tax. Following a rewarding career shift, Patience now specialize in preparing federal and state tax returns.
Having recently moved to Midland from San Antonio, she looks forward to becoming an active member of the community. Patience is passionate about community engagement, serving others, and contributing to work that creates value for both clients and colleagues.
Small Oil & Gas/Financial Reporting Committee
Andrea Barrera
Accounts Payable | David H. Arrington Oil & Gas, LLC
Andrea Barrera brings over 10 years of accounts payable experience and a passion for accuracy, organization, and operational excellence. She helps keep financial processes running smoothly by ensuring invoices are processed efficiently, payments are made on time, and vendors receive exceptional support. Her commitment to precision and teamwork helps strengthen the organization's financial operations.
Outside of work, Andrea is a proud wife and mother of three who enjoys spending quality time with her family and cheering on her children’s soccer team.
Andrea’s strong teamwork, discipline, and commitment that she values at home and on the field are the same qualities that help her succeed professionally.
Joint Interest Committee/Audit Committee
Evan M. Green, CPA | Past President – PASPB
Audit Partner at Whitley Penn
Evan Green is an Audit Partner at Whitley Penn, where he specializes in serving energy-sector clients with complex audit and assurance needs. With experience spanning upstream, midstream, and oilfield services, as well as private equity and international reporting. Evan brings a strategic, risk-based approach to every engagement. He currently serves on PASPB as Chair of both the Joint Interest and Audit Committees and is a former President of PASPB. Evan is a CPA, Texas Tech alumnus, and active member of TXCPA, AICPA, and Young Professionals in Energy.
Education Day Committee
Janeth Griego, MPA
Financial Reporting Manager at Parallel Petroleum Corp
Janeth Griego serves as the Financial Reporting Manager at Parallel Petroleum Corp and brings a strong background in oil and gas accounting to her leadership role with PASPB. She holds both a bachelor’s and master’s degree in accounting from UT Permian Basin and is an active member of TXCPA and Beta Gamma Sigma.
With prior experience at Weaver and a history of board service with PASPB, Janeth offers a deep understanding of financial reporting, regulatory compliance, and event coordination. Her passion for education and professional development drives her commitment to making Education Day a valuable and impactful experience for members across the Permian Basin.
Co-Chair, Education Day Committee
Dovie Stark
Accountant | BTA Oil Producers
Dovie Stark is an Accountant with over 25 years of experience in the oil and gas industry, specializing in accounting, revenue accounting, drilling reports, and production. She began her career at the age of 19 with Parker & Parsley and has since worked with several respected energy companies across the Midland-Odessa region.
Dovie currently serves as an Accountant at BTA Oil Producers and earned her bachelor’s degree in accounting from the University of Texas Permian Basin in May 2023. A dedicated PASPB member for the past four years, she brings a deep understanding of the industry, a strong work ethic, and a steady commitment to advancing education and professional development through her role on the Education Day Committee.
Outside of work, Dovie has been happily married for 32 years and is the proud mother of two daughters and grandmother to five grandchildren.
Sponsorship Committee
Mattie Smith, MBA | Past President
Accounting Manager | Rivertree Resources, LLC
Founder | Assurance Grant Consulting Services (AGCS)
Mattie Smith is the Accounting Manager at Rivertree Resources, LLC, a privately held land and mineral company with diversified assets and non-operating interests across the Texas and New Mexico Permian Basin, Powder River, Texas Panhandle, and Western Oklahoma. She oversees accounting and financial reporting for revenue, ownership, and mineral management, applying both technical expertise and strategic insight to support the company’s growth.
She is also the Founder of Assurance Grant Consulting Services (AGCS), which helps small and faith-based nonprofits secure sustainable funding through practical grant training and consulting support.
As the Sponsorship Committee chair of the Permian Basin Society of Petroleum Accountants (PASPB), Mattie advances the mission of PASPB through sponsor relations.
Outside of work, she co-founded the Neighbors Eden Project, a volunteer-led nonprofit that provides free lawn care to elderly and disabled residents in Midland, Texas. A proud mother of four, she values lifelong learning, community service, and hands-on projects that strengthen families and communities.
Social Committee
Clarissa Melise Bretado, MBA
Senior Tax Associate | Whitley Penn
Clarissa Bretado is a tax associate at Whitley Penn LLP in Midland, Texas, with expertise in tax regulation, auditing, and financial compliance. She holds a B.A. in Accounting from Texas State University and an MBA in Business Analytics from Lamar University.
Her experience includes conducting sales tax audits for the Texas State Comptroller and working in public accounting, where she developed strong technical skills and a detail-oriented approach. Clarissa also serves as Membership Chair for the Petroleum Accountants Society of the Permian Basin (PASPB) and Technology & Social Media Director for the Neighbors Eden Project, reflecting her commitment to professional growth and community impact. She is a proud mother of a five-year-old son, who inspires her daily pursuit of excellence at work and in the community.
Social Committee
Ashley Aguirre
Tax Intern | Whitley Penn
Ashley Aguirre is an accounting student with a strong passion for leadership, professional development, and serving the accounting community. Ashley works as an administrative assistant at Whitley Penn, gaining valuable experience in the accounting profession while continuing her education.
She has also accepted a Spring 2027 Tax Internship with Whitley Penn, where she looks forward to expanding her knowledge and developing her career in public accounting. As a first-generation college student, Ashley is passionate about encouraging others to pursue their goals and take advantage of opportunities for personal and professional growth. She believes that involvement in organizations is an important part of building leadership skills, creating lasting connections, and preparing for a successful career in accounting.
Education Committee – Plan and manage Education Day sessions.
Small Oil & Gas/Financial Reporting – Share financial updates and support small oil and gas companies.
Joint Interest/Audit – Oversee audit processes and joint interest matters.
Revenue – Manage revenue-sharing processes and updates.
Social Community Events – Organize social events to boost member engagement.
As a Committee Chair, you’re fully in charge of your team. You can make it as involved as you want—building up a team, hosting events, and driving initiatives, or keep it streamlined by simply reporting updates from the COPAS National Level. It’s entirely up to you how you want to shape it!
What Committee Chairs do: