About the Firm
Allen & Thomas is a boutique business law firm focused on providing customized legal solutions to assist businesses in navigating legal challenges and offering strategic business advisory services.
Firm Overview
The attorneys at Allen & Thomas are more than just legal representatives – we are dedicated advisors and advocates who prioritize understanding the unique business needs of our clients. Our decades of experience in securities law and corporate governance provide clients with the confidence to navigate legal challenges, overcome adversity, and pursue growth strategies. Thanks to our holistic approach, we are uniquely positioned to navigate the intricacies and intersections of corporate, financial, and securities issues.
We bring a fresh perspective and a deep understanding of the law to complement the entrepreneurial spirit of our clients. Our attorneys’ breadth and depth of experience provide clients with strategic guidance for every situation. Our firm is supported by our network of collaborative experts, from CPAs and auditors to other specialized attorneys.
Allen & Thomas are the steadfast advocates you need by your side. While we can provide one-off services to clients, we strive to provide unparalleled value and become the trusted advisors and long-term partners our clients need.
Through our hands-on approach to comprehensive legal and business advisory services, we often build long-lasting relationships with clients as they navigate the unexpected and the everyday challenges of running their businesses.
Meet THE Team

David Allen
Partner
Short Biography
David Allen has nearly thirty years of experience in the securities industry, where he has developed a profound understanding of the financial regulatory environment. David has provided litigation support in hundreds of legal proceedings, founded numerous financial services firms, and conducted compliance consulting. With a deep understanding of SEC and FINRA regulations and the difficulties of acquiring capital, David is committed to assisting and guiding financial firms and securities issuers. His vast knowledge and expertise in this area make him a valuable resource for those seeking support in navigating these complex processes.
Education and Admissions
He earned his Juris Doctor from Vermont Law School. He earned a M.B.A. from University of Massachusetts, Lowell and a B.S. in Business Administration and Management from Oral Roberts University. David is licensed to practice law in New York, New Jersey and Connecticut.
Bar Admissions:
New York, Connecticut, New Jersey
Court Admissions:
United States District Court for the Southern District of New York

Natalie Thomas
Partner
Short Biography
Natalie specializes in unregistered securities offerings and corporate governance, providing legal counsel to a wide range of clients, including SEC-registered broker-dealers, serial issuers, and startups. Her work involves helping businesses with their routine legal needs, ensuring compliance with legal and regulatory requirements, and supporting their growth by developing capital acquisition strategies. Additionally, Natalie offers guidance in intellectual property matters, helping clients in protecting their innovations and creative assets. Her deep understanding of the entrepreneurial environment enables her to effectively support businesses and entrepreneurs with compliance, financing, and every day legal challenges.
Education and Admissions
She earned her Juris Doctor from Vermont Law School and a B.A. in Philosophy from the University of California, Los Angeles. Natalie is licensed to practice law in California.
Bar Admissions:
California
Court Admissions:
United States District Court for the Central District of California

Cannon McMahan
Associate Attorney
Short Biography
Cannon McMahan serves as an Associate Attorney with Allen & Thomas, LLP. Cannon’s experience has revolved around assisting entrepreneurs navigate corporate and securities issues. Specializing in matters related to exempt securities offerings under Regulation D, Regulation A, and Regulation Crowdfunding, Cannon’s legal practice includes advising founders on business and fund formation, developing capital-raising strategies, and drafting corporate governance documents, securities offering statements, and other business agreements.
Education and Admissions
Cannon earned his Juris Doctor from the Oklahoma City University School of Law and dual Bachelor of Science degrees from Oklahoma State University. Cannon is licensed to practice law in Oklahoma.
Bar Admissions:
Oklahoma