About Jeff Cassin

Jeff Cassin is a business attorney whose practice focuses on mergers and acquisitions, investment transactions, corporate law, and business contracts. He routinely serves as outside general counsel to companies without in-house legal teams and as a trusted advisor to internal GCs with specialized needs.
Jeff represents middle market and mid size businesses, funds, start ups—particularly technology and media companies—and individual investors. He counsels clients through complex M&A transactions, deal negotiations, and key management decisions, and has served as lead attorney on dozens of buy side and sell side transactions across industries.
In addition, Jeff has extensive experience structuring and negotiating financing arrangements, equity and debt investments, and agreements among founders, investors, executives, and employees. He regularly advises start ups from initial formation through growth, capital raises, and successful exits—giving him practical insight into the legal considerations that support an effective and scalable sales process.