Common Law US
Business Law.Business Immigration.One Strategic Partner.
We advise entrepreneurs, executives, investors, and growing companies on business, corporate, and contract law — paired with sophisticated business immigration expertise.
Start or Grow Your U.S. Business
Corporate formation, contracts, M&A, and outside general counsel for companies building in the United States.
Explore Business LawBring Yourself or Your Company to the U.S.
Investor, entrepreneur, O-1, and EB-2 NIW visas, paired with the business setup behind them.
Explore Business Immigration
How can I help you?
Jonathan (JT) Mann has practiced business law for more than thirty years and immigration law for more than twenty years. He helps U.S. and international businesses succeed.
Business Law
01 / Startups & Technology Companies
Startups & Technology Companies
Entity formation, founder agreements, equity, vesting, SAFEs and convertibles, venture financings, and the commercial and SaaS agreements that carry a company from idea to institutional scale.
Get in Touch→02 / Mergers & Acquisitions
Mergers & Acquisitions
Buy-side and sell-side representation across the middle market, from letter of intent through diligence, definitive agreements, and closing.
Get in Touch→03 / International Transactions
International Transactions
Joint ventures, distribution and agency arrangements, and inbound and outbound investment for companies operating across borders.
Get in Touch→04 / Non-Profit Organizations
Non-Profit Organizations
Formation, governance, and outside general counsel support for U.S. non-profit organizations, including board governance and the everyday contract work that keeps a mission-driven organization running.
Get in Touch→Business Immigration
01 / Investor & Entrepreneur Visas
Investor & Entrepreneur Visas
Investor and entrepreneur visa strategy for founders and investors starting or buying a U.S. business — including EB-5-style investor matters and, for eligible nationalities, E-2 treaty investor petitions.
Learn more→02 / O-1 & EB-2 NIW Visas
O-1 & EB-2 NIW Visas
O-1 extraordinary ability and EB-2 National Interest Waiver petitions for founders, executives, and specialists with a record of achievement who are building or joining a U.S. venture.
Learn more→03 / Business Setup for Foreign Founders
Business Setup for Foreign Founders
Entity formation, corporate structuring, and contracts built alongside the visa strategy, so the business and the immigration filing move together.
Learn more→
A broad legal practice based in Boston — but ready to meet with you in Manhattan, Orlando/Miami, Rio de Janeiro, Seoul or elsewhere around the globe.
Helping businesses succeed across the U.S. and around the world.
Credentials
Why Clients Trust Our Firm
More than thirty years of practice in the United States and abroad.
Bar Admissions: Massachusetts · New York · Maine · U.S. Supreme Court
Former law clerk, U.S. Court of Appeals for the First Circuit, Boston.
Former Foreign Legal Consultant, Seoul, Republic of Korea.
U.S. immigration matters — investor, entrepreneur, O-1, EB-2 NIW visas — handled alongside business formation.
Cross-Border Practice
Brazil
South Korea
Spain
Portugal
United Kingdom