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Dallas K. Mosier

Senior Counsel

Dallas Mosier wants to take on your legal challenges. Dallas is a senior corporate and technology attorney who proactively collaborates with clients to form new entities, raise capital, protect intellectual property, prepare contracts, ensure compliance with evolving privacy and consumer protection laws, and position their companies for exit transactions. In addition to his corporate practice, Dallas leads the firm’s cross-disciplinary Artificial Intelligence Practice Group, coordinating legal guidance across corporate, intellectual property, and privacy matters for clients deploying or investing in AI-enabled products.

Experience

With expertise spanning various industries, including SaaS, artificial intelligence-enabled services, e-commerce, manufacturing, cannabis, and alcoholic beverages, Dallas provides strategic guidance to emerging and established companies, investors, and executives on business formation, financing, mergers and acquisitions, and licensing arrangements. His work increasingly includes counseling companies on the use and commercialization of artificial intelligence technologies, including AI-related contracting, data use, and risk management. His comprehensive approach equips clients with the tools they need to thrive in a competitive landscape.

In addition to client work, Dallas presents on legal issues at the intersection of artificial intelligence and intellectual property, including sessions on AI and copyright law for business, technical, and legal audiences.

Publications

Dallas K. Mosier and Aaron Kriss, The Missed 83(b) Election Is Your Company’s Problem Too, Gesmer Updegrove LLP (2026)

Dallas K. Mosier, California Ends Private “Pen Register” Suits Over Website Tracking. Here Is What It Doesn’t End. , Gesmer Updegrove LLP (2026)

Dallas K. Mosier, Legal Risks Your AI Tools May Create, Gesmer Updegrove LLP (2026)

Dallas K. Mosier, NVCA FORMS: What Are They and Why Should You Care?, Gesmer Updegrove LLP (2025)

Dallas K. Mosier, What Entrepreneurs Should Expect in Equity Financing Term Sheets: Financial Terms, Gesmer Updegrove LLP (2024)

Dallas K. Mosier, Privacy Assessments, Gesmer Updegrove LLP (2024)

Lee T. Gesmer and Dallas K. Mosier, Will Your Non-Compete Agreements With Employees Become Illegal?, Gesmer Updegrove LLP (2023)

Dallas K. Mosier, Which Entity Type Should I Choose For My Business?, Gesmer Updegrove LLP (2022)

Representative Public Speaking

  • – AI and Data Privacy in M&A roundtable, Alliance of M&A Advisors – New England
  • – AI in M&A: Tools, Risks, and Practical Guidance for Lawyers and Accountants, Corporate Finance Group – Alliott Global Alliance
  • – Frustration of Purpose 2.0 in Breach of Contract Cases, 25th Annual Business Litigation Conference 2026 – MCLE New England
  • – Artificial Intelligence and Copyright Law, Boston DITA Users’ Group
  • – The AI-Powered Lawyer: Ethics & Innovation, Davis Square LLM Meetup
  • – Beyond the Algorithm: Understanding the Impact of AI on Law, New England Corporate Counsel Association, Inc.
  • – Transfer & Disposition of Businesses & Business Interests, CLE Program – MCLE New England
  • – Business Planning for New (and emerging) Ventures: Avoiding Common Legal Pitfalls, CBX Center for Business Excellence – Boston College

Education

Chapman University, School of Law, LL.M. in Taxation

Chapman University, School of Law, JD

University of California, Irvine, BA, Political Science

Admissions

California

Massachusetts

Professional Memberships

The California Lawyers Association (CLA) Member; CLA Business Law & Privacy Law Section Member

Southern California Rising Star 2016-2021