Leadership

Pat Collawn has been named Executive Chair of TXNM Energy, the parent company of PNM and TNMP, effective July 1, 2025.

Pat has more than 30 years of experience in the utility industry. Before joining TXNM Energy in 2007, Pat served as President and CEO of Public Service Company of Colorado, a subsidiary of Xcel Energy.

Business Experience

TXNM Energy

• Executive Chair
• Chair and Chief Executive Officer
• Chair, President and Chief Executive Officer
• President and Chief Operating Officer
• Utilities President

Xcel Energy

• President and Chief Executive Officer, Public Service Company of Colorado
• President, Customer and Field Operations
• President, Retail Services
• Vice President, Marketing and Sales

Community Activities

• New Mexico Partnership, Chair
• University of New Mexico Foundation Board of Trustees
• Kirtland Partnership Committee, Past Chair
• Economic Forum of Albuquerque, Past Board Member
• Greater Albuquerque Chamber of Commerce, Past Chair and Board Member
• United Way of Central New Mexico, Past Chair and Board Member

Professional Affiliations

• Electric Power Research Institute, Board of Directors, Chairman 
• CTS Corporation (NYSE: CTS), Board of Directors
• NEIL (Nuclear Electric Insurance Limited), Board Member
• Edison Electric Institute, Board of Directors, Past Chairman

Education

• Harvard University, Master of Business Administration
• Drake University, Bachelor’s Degree in Journalism

Don Tarry has been named President and CEO for TXNM Energy, the parent company of PNM and TNMP, effective July 1, 2025. He joined the company in 1996 and has previously served as the President and Chief Operating Officer, Senior Vice President, Chief Financial Officer, Vice President, Controller and Treasurer and the Vice President, Customer Service and Chief Information Officer for TXNM Energy. 

Business Experience

TXNM Energy

• President and Chief Executive Officer
• President and Chief Operating Officer
• Senior Vice President and Chief Financial Officer
• Vice President, Controller and Treasurer
• Vice President, Customer Service and Chief Information Officer
• Executive Director, Financial Planning and Business Analysis
• Controller, Business Operations
• Assistant Corporate Controller
• Director, Wholesale Power Accounting
• Director, Internal Reporting, Analysis and Re-engineering
• Controller, Avistar
• Senior Integrated Audit Manager
• Senior Auditor

Arthur Andersen, LLP

• Auditor

Professional Awards and Training

• Certified Public Accountant
• Certified Financial Management
• Certified Management Accountant

Community Activities

• Albuquerque Regional Economic Alliance, Chair
• Greater Albuquerque Chamber of Commerce, Board of Directors
• Leadership New Mexico

Education

• New Mexico State University, 1995, Bachelor of Accountancy, graduated with honors

Henry E. Monroy is Senior Vice President, Chief Financial Officer for TXNM Energy, the parent company of PNM and TNMP. With more than 20 years of experience in the utility industry, Henry oversees the Regulatory, Treasury, Corporate Financial Planning, Controller, Budgeting and Tax functions.

Henry joined the company in 2003 and has previously served as the Vice President of PNM Regulatory, Vice President and Corporate Controller, and various roles in the accounting, revenue and budget functions. He is a Certified Public Accountant in the state of New Mexico and graduated with his Bachelor of Accountancy from New Mexico State University.

Business Experience

TXNM Energy

• Senior Vice President and Chief Financial Officer
• Vice President, PNM Regulatory
• Vice President and Corporate Controller
• Controller, Utility Operations
• Director, Budget, Cost of Service and General Accounting
• Director, Audit and Cost of Service
• Director, Cost of Service and Corporate Budget
• Director, Utility Accounting
• Manager, Revenue Requirements
• Manager, Energy Analysis and Accounting
• Manager, Wholesale Power Marketing Energy Accounting
• Project Manager, Controller Group
• Controller Group Senior Analyst

Johnson, Miller & Co.

• Auditor

Arthur Andersen, LLP

• Auditor

Professional Awards and Training

• Certified Public Accountant

Community Activities

• T2 Ministry Board Member

Education

• New Mexico State University, 2001, Bachelor of Accountancy

Lisa Eden is Senior Vice President of Finance for TXNM Energy, the parent company of PNM and TNMP. With more than 20 years of experience in the utility industry, Lisa most recently served as the Senior Vice President and and Chief Financial Officer, overseeing the Treasury, Investor Relations, Corporate Financial Planning, Controller, Budgeting, Tax and Corporate Auditing functions. 

Lisa joined PNM in 2001 and has previously served as the Vice President and Treasurer role twice, along with Vice President and Chief Information Officer and Vice President, Human Resources. She began her career in finance with Hanseatic Group, Inc. after completing her Master of Business Administration degree from the University of New Mexico in 1992.

TXNM Energy

• Senior Vice President of Finance
• Senior Vice President and Chief Financial Officer
• Vice President and Treasurer
• Vice President and Chief Information Officer
• Vice President, Human Resources
• Vice President, Treasurer
• Executive Director, Financial Planning and Business Analysis
• Assistant Treasurer
• Director, Corporate Strategy
• Senior Manager, Corporate Strategy
• Project Manager, Investor Relations
• Sr. Investment Analyst, Treasury
• Planner, Gas Supply

Other

• Investment Consultant, Kip Nicely & Associates
• Portfolio Manager, Hanseatic Group, Inc.

Professional Affiliations

• CFA Institute

Current Community Activities   

• United Way of Central New Mexico, Board of Directors
• UWCNM Mission: Families Vision Council member

Education

• University of New Mexico, Bachelor of Business Administration; Emphasis: Financial Management
• University of New Mexico, Master of Business Administration, Emphasis: Financial Management and Operations Research
• Chartered Financial Analyst charter holder

Brian Iverson is General Counsel, Senior Vice President Regulatory and Public Policy, and Corporate Secretary for TXNM Energy, the parent company of PNM and TNMP. Prior to joining TXNM Energy in September 2024, Mr. Iverson held a variety of roles at Black Hills Corporation, a publicly traded utility company, for 20 years. Brian oversees the legal team as well as the Regulatory, Public Policy and Supply Chain teams for TXNM Energy.

Business Experience

TXNM Energy

• General Counsel, Senior Vice President Regulatory and Public Policy, and Corporate Secretary

Black Hills Corporation

• Senior Vice President, General Counsel and Chief Compliance Officer
• Senior Vice President - Regulatory and Governmental Affairs and Assistant General Counsel
• Vice President and Treasurer
• Vice President - Electric Regulatory Services
• Corporate Counsel

Education

• University of South Dakota, Juris Doctor
• University of South Dakota, Master of Business Administration
• University of South Dakota, Bachelor of Science in Business Administration, Accounting degree

Monique Jacobson is Senior Vice President, Corporate Services for TXNM Energy, the parent company of PNM and TNMP.

Monique oversees the Customer Experience team, Human Resources and Chief Information Officer functions. Monique has 25 years of experience spanning the public and private sectors. Before joining TXNM Energy in 2025, Monique owned and operated two consulting companies.  She has served as Cabinet Secretary for the New Mexico Tourism Department and the Children, Youth and Families Department.  Prior to being appointed Cabinet Secretary Monique was an executive at PepsiCo for 10 years where she ran the Quaker Breakfast portfolio and led innovation for Gatorade. 

Business Experience

TXNM Energy

• Senior Vice President Corporate Services

Monique & Associates and Forward Solutions

• Owner/Partner

State of New Mexico

• Cabinet Secretary Children, Youth, and Families Department
• Cabinet Secretary Tourism Department

PepsiCo

• General Manager, Quaker Breakfast Portfolio
• General Manager, Quaker Accessible Health and Wellness
• Senior Brand Manager, Gatorade Innovation and Emerging Sports

Community Activities

• BTC Squared, founder
• New Mexico Changemakers
• New Mexico Amigos

Education

• Wharton School of Business at The University of Pennsylvania, Bachelor of Science in Economics, graduated with honors

Robert Bischoff is Vice President and Corporate Controller for TXNM Energy, the parent company of PNM and TNMP. He joined the company in 2005. With more than 19 years of experience in the utility industry, Robert serves as the Company's principal accounting officer.

Business Experience

TXNM Energy

• Director, SEC Reporting and GAAP Analysis
• Assistant Controller, Utility Accounting
• Director, Utility Accounting
• Senior Manager, General Accounting
• Manager, Corporate Accounting
• Project Manager, Corporate Accounting
• Controller Group Senior Analyst

KPMG, LLP

• Senior Auditor
• Auditor

Professional Awards and Training

• Certified Public Accountant

Community Activities

• Junior Achievement instructor and board member
• EEI Accounting Standards Committee, Vice Chair

Education

• New Mexico State University, Bachelor of Accountancy
• New Mexico State University, Master of Accountancy

Lisa Goodman is Vice President, Investor and Community Relations for TXNM Energy, the parent company of PNM and TNMP. Lisa oversees the areas of Investor Relations and Shareholder Services, Corporate Communications and Brand Management, Customer Energy Solutions and Community Engagement. She joined the company in 2003.

Business Experience

TXNM Energy

• Vice President, Investor and Community Relations
• Executive Director, Investor Relations and Shareholder Services
• Director, Investor Relations and Shareholder Services
• Manager, Investor Relations
• Manager, Treasury
• Manager, Financial Planning
• Manager, Business Analysis & Reporting
• Sr. Accountant

Other

• Auditor, KPMG, LLP
• Auditor, Arthur Andersen, LLP

Professional Awards and Affiliations

• Investor Relations Charter (IRC)
• Institutional Investor All-America Executive Team honors: 2019, 2020, 2021, 2024
• National Investor Relations Institute Chapter Member
• PNM Resources Responsible Citizens Group Board Member
• Women’s Energy Summit, 2022 Rising Star
• Albuquerque Business First 2022 Women of Influence
• New Mexico Business Weekly 2009 40 Under Forty

Community Activities

• PNM Resources Foundation Board Member and Past President
• Leadership New Mexico graduate
• UNM Anderson School of Management Foundation, Past Board Member
• Leukemia & Lymphoma Society NM Chapter, Past Board Member
• United Way Campaign Past Company Lead
• Women’s Housing Coalition, Past Board Chair

Education

• Purdue University, Bachelor of Science in Accounting
• Georgetown University, Professional Certificate, EEI Campaign Institute
• University of Idaho, Professional Certificate, Energy Executive Course Summit

Sabrina Greinel is Vice President, Treasurer and Strategy for TXNM Energy, the parent company of PNM and TNMP. She joined the company in 2007. Sabrina oversees the company’s Financing Planning and Treasury functions, including the management of the company’s corporate trusts. She also oversees the company's corporate strategy and risk management functions, including enterprise risk management and insurance.

Business Experience

TXNM Energy

• Vice President, Treasurer & Strategy
• Executive Director, Treasury
• Assistant Treasurer
• Senior Manager, Corporate Budget and Enterprise Risk Management
• Senior Program Manager, Enterprise Risk Management and Corporate Strategy
• Project Manager, Enterprise Risk Management and Corporate Strategy
• Senior Internal Auditor

New Mexico Educational Assistance Foundation

• Internal Auditor

Community Activities

• Albuquerque Public Schools Education Foundation board member
• Magnify Dance Ensemble board member and treasurer
• Big Brothers Big Sisters 2.0 mentor
• Junior Achievement instructor

Education

• University of New Mexico, Bachelor of Business Administration; Emphasis: Finance
• University of New Mexico, Master of Business Administration; Emphasis: Accounting

Sheila Mendez is Vice President and Chief Information Officer for TXNM Energy, the parent company of PNM and TNMP.  With over 33 years of experience in technology and 25 years in the utility industry, Sheila oversees the management and development of all business technology and cyber and physical security for TXNM Energy, PNM and TNMP.  She is also responsible for federal reliability standards compliance, critical infrastructure protection and crisis management.  Sheila joined the company in May 1999.

Business Experience

TXNM Energy

• Executive Director, Enterprise Project Management Office
• Director Utility Applications, Enterprise Architecture & IT PPMO
• Director Operations Technology & IT PPMO
• Director IT PPMO & Quality
• Director of IT Account Management
• Account Manager in IT
• Manager of Customer Service IT

City of Albuquerque

• Application Development Coordinator
• Senior IT Systems Analyst
• Programmer and Data Systems Analyst

Professional Awards and Training

• Certified Project Management Professional (PMP)
• Change Management Registered Practitioner (CMP)
• UNM Anderson School of Management Hall of Fame Inductee
• NM Women in Technology award recipient

Community Activities

• UNM Alumni Letterman’s Association, Board Member and Past President
• New Mexico Technology Council, Past Chair
• UNM Lobo Club, Past Board Member
• Kirtland Airforce Base, Past Honorary Commander
• Leadership Albuquerque graduate

Professional Affiliations

• The Honor Society of Phi Kappa Phi
• Institute of Electrical and Electronics Engineers (IEEE)
• Edison Electric Institute (EEI) Security and Technology Policy Executive Advisory Committee
• Electric Power Research Institute (EPRI), Artificial Intelligence Executive Committee, Past member

Education

• University of New Mexico, Master of Business Administration
• University of New Mexico, Bachelor of Business Administration, emphasis business computer systems
• University of Idaho, Professional Certificate, Utility Executive Program

Mike Mertz is PNM Senior Vice President, Operations and an officer of TXNM Energy, the parent company of PNM and TNMP. Mike oversees the management of PNM's engineering, integrated planning and operational technology functions. He also directs PNM distribution, transmission and generation operations, generation development, customer operations, capital construction project management and regional bulk electric market operations. He joined TXNM Energy in June 2010 and has previously served as the Vice President and Treasurer for TXNM Energy and Vice President and Chief Information Officer. 

Business Experience

TXNM Energy

• PNM Senior Vice President, Operations and TXNM Energy Vice President, New Mexico Operations
• Vice President and Chief Information Officer
• Vice President and Treasurer
• Vice President and Chief Information Officer
• Director, Operations Technology and NERC Reliability Governance
• Director, NERC Compliance
• Senior Project Manager, FERC/NERC Regulatory Compliance

Southern California Edison

• Manager, Information Security
• Project Manager, Technology & Risk Management
• IT Specialist, Power System Controls

California Independent System Operator

• Engineering Specialist/Applications Engineer

Community Activities

• CNM Foundation, Board of Directors
• Best Buddies New Mexico, Advisory Board, Past Board Chair
• PNM Resources Foundation, Board of Directors
• NM Museum of Natural History, Past Board Chair

Professional Awards and Training

• Certified Information Systems Security Professional (CISSP #94322)
• Certified Information Systems Auditor (CISA #0864949)
• Certified Information Security Manager (CISM #1013458)

Education

• Boston University, Master of Science, Information Systems
• Sacramento City College, Associate of Science, Computer/Information Science
• University of New Mexico, Bachelor of Biology
• California Institute of Technology, Professional Certificate, Project Management
• University of Idaho, Professional Certificate, Utility Executive Program

Becky Teague is Vice President, Human Resources for TXNM Energy, the parent company of PNM and TNMP. With over 35 years of experience in the utility industry, Becky is responsible for overseeing human resource strategy for the organization through employee and labor relations, compensation, benefits, workforce development and safety.

She joined PNM in 1988 after completing her Bachelor of Business Administration degree from the University of New Mexico.

Business Experience

TXNM Energy

• Vice President, Customer Service Operations (PNM)
• Vice President, External Affairs (PNM)
• Director, Customer Experience (PNM)
• Assistant Controller Shared Services
• Senior Manager Corporate Accounting
• Supervisor Gas Accounting (PNM)
• Accountant

Community Activities   

• Albuquerque Community Foundation, Board of Trustees
• Leadership New Mexico graduate

Education

• University of New Mexico, Bachelor of Business Administration; Emphasis: Accounting

Neal Walker is TNMP President and an officer of TXNM Energy, the parent company of TNMP and PNM. He joined TNMP in 1990 and has over 30 years of utility experience. Neal’s experience at TNMP spans both traditional vertically integrated utility as well as deregulated T&D and retail energy provision. He is responsible for TNMP’s overall utility operations including transmission and distribution, engineering, retail market and community relations, and legislative and regulatory affairs.

Business Experience

• TNMP President and TXNM Energy Vice President, TNMP
• President, TNMP
• Vice President Texas Operations, TNMP
• Vice President Transmission and Distribution for Texas and New Mexico, TNMP
• Director Transmission and Distribution Lewisville/North Texas, TNMP
• Director Customer Operations, TNP Enterprises/First Choice Power
• Business Unit Manager North Texas, TNMP
• Area Manager North Texas, TNMP
• Regulatory Affairs Specialist Texas and New Mexico, TNMP
• Contracts and Pricing Analyst Texas and New Mexico, TNMP

Community Activities

• Association of Electric Companies of Texas, Board of Directors/Past Chair
• RMEL Board of Directors/Past chair
• PNM Resources Foundation, Past Board of Trustees
• Texas University Frog Club Member, Past Board of Directors
• Executive Mentor M.J. Neeley School of Business, Texas Christian University
• Cross Timbers Rotary Charter Member, Past Board of Directors
• Children’s Advocacy Center of Denton County, Capital Campaign Steering Committee
• Dallas 500 Most Powerful Business Leaders in Dallas/Fort Worth
• Leadership Lewisville Graduate
• Flower Mound Youth Sports Association, Past Board of Directors

Education

• Texas Christian University, Bachelor of Business Administration
• Le Tourneau University, Master of Business Administration
• Executive Education courses at University of Virginia Darden Graduate School, Arthur Anderson, and Texas Christian University M.J. Neely Graduate School