DERON R. HARRINGTON, JD, CPA

Attorney • Certified Public Accountant • Executive Counsel

EXECUTIVE PROFILE

Dual-licensed Attorney and CPA with nearly 30 years of leadership across law, taxation, finance, commercial operations, and executive governance. I have run firms, advised boardrooms, led billion-dollar portfolios, and protected families and organizations through complex legal, tax, and financial challenges.

My background spans courtrooms, C-suites, regulated markets, M&A, family offices, and high-pressure dispute environments. I deliver a force-multiplying, holistic approach integrating legal judgment, tax strategy, financial insight, operational awareness, and enterprise risk management.

I am the advisor individuals and organizations trust when stakes are high, timelines are tight, and precision matters.

EXECUTIVE & LEGAL EXPERIENCE

HARRINGTON LAW / HARRINGTON CPA, PLLC — Managing Attorney & Principal CPA

2007 – Present • Texas & Nationwide

Boutique legal and financial practice providing high-impact counsel in asset protection, wealth defense, tax strategy, IRS representation, business advisory, governance, M&A, probate, inheritance conflicts, selective litigation, and family office integration.

MMLJ, INC. — General Counsel & Senior Executive Advisor

2018 – 2024 • Houston, Texas

Chief legal and strategic advisor to a multi-entity corporate group. Directed regulatory, legal, tax, compliance, employment, and litigation strategy. Advised on governance, capital structure, enterprise risk, and long-range positioning.

HARRINGTON, CARBONE & ALLISON, LLP — Co-Founder & Managing Partner

2003 – 2015 • Pearland, Texas

Co-founded and expanded a respected CPA firm. Directed tax strategy, advisory services, operations, and long-term strategic development. Executed successful transition and exit.

RELIANT ENERGY, INC. — Senior Vice President, Commercial Operations & Risk Management

1999 – 2003 • Houston, Texas

Directed multi-billion-dollar commercial portfolios across natural gas, crude oil, electricity, coal, and emissions. Led trading, operations, analytics, and enterprise risk functions.

AMEREN CORPORATION — Director, Power Marketing

1998 – 1999 • St. Louis, Missouri

Modernized legacy regulated operations into competitive structures. Executed strategy during electric industry deregulation.

AQUILA INC. — Director, Energy Trading & Risk Management

1997 – 1998 • Kansas City, Missouri

Led optimization and hedging strategies for multiple utility subsidiaries. Helped build early wholesale energy market frameworks.

UTILICORP UNITED, INC. — Structured Energy Support

1996 – 1997 • Kansas City, Missouri

Developed structured pricing and retail energy products. Supported national competitive market expansion.

KERR-MCGEE CORPORATION — Transportation & Exchange / Accounting Development Program

1991 – 1995 • Oklahoma City, Oklahoma

Managed U.S. natural gas pipeline transportation strategy. Completed formal accounting and commercial development program.

LICENSURE & COURT ADMISSIONS

Attorney: Texas & Oklahoma
CPA: Texas & Oklahoma

Court Admissions:
Supreme Court of the United States
U.S. Tax Court
U.S. District Courts (Southern & Eastern Districts of Texas)
All Texas & Oklahoma State Courts

EDUCATION

J.D. — South Texas College of Law–Houston
Graduate Study (Tax, Finance & Quantitative Methods) — University of Oklahoma
B.S. Accounting — Oklahoma State University

LEADERSHIP & AFFILIATIONS

Past President — American Academy of Attorney–Certified Public Accountants (AAA-CPA)
Fellow — American Bar Foundation
AICPA • Texas Society of CPAs
State Bar of Texas • Oklahoma Bar Association
Lifetime OSU Alumni Association Member
American Legion

MILITARY SERVICE

U.S. Army Reserve & Army National Guard (OK & KS)
Enlisted Infantry • Graduate, U.S. Army OCS • Commissioned Field Artillery Officer

REFERENCES

Available upon request.