Isaac Mamaysky

Isaac Mamaysky is an experienced Partner who provides corporate, compliance, and employment law counsel to management teams and in-house attorneys across industries. His clients include registered investment advisers (RIAs), investment adviser representatives (IARs), financial services providers, large corporations, and closely held businesses.  

Mr. Mamaysky leads complex negotiations, drafts commercial contracts and executive employment agreements, advises on ethics and compliance programs, conducts internal investigations, and provides general corporate counsel. He also holds a Series 65 license and has particular experience with the Investment Advisers Act and its state law analogs. 

Mr. Mamaysky founded the firm’s Investment Advisers, Asset Managers, and Private Funds practice. He is also a cofounder and chief compliance officer of a New York registered investment adviser, which gives him a unique industry-informed perspective when providing counsel to other RIAs.  

Mr. Mamaysky has published numerous articles concerning corporate, investment adviser, and employment law matters, including in the: Harvard Law School Forum on Corporate Governance; Duke Law Journal Online; the Fordham Journal of Corporate and Financial Law; the UC Davis Business Law Journal; the Santa Clara Law Review; and many other publications. He also authored the book Letter to a One L Friend  for Carolina Academic Press, which helps students navigate the challenges of law school. 

In addition to his writing, Mr. Mamaysky is an adjunct professor at the Elisabeth Haub School of Law at Pace University. He regularly teaches Corporations & Partnerships and Employment Law, and has previously taught Ethics & Compliance. 

Beyond his legal practice, Mr. Mamaysky has spent more than a decade managing a large 501(c)(3) nonprofit, which he and his wife cofounded in 2012. Among other initiatives, the nonprofit operates a well-known children’s summer camp that focuses on celebrating healthy, active living through fitness, cooking, sports, and arts. Mr. Mamaysky regularly speaks about legal matters at American Camp Association conferences and events. He especially enjoys representing day camps and overnight camps, and regularly advises them on corporate, regulatory, and employment matters, as well as their obligations under federal and state civil rights laws. 

Mr. Mamaysky began his career in the securities litigation practice of a prominent law firm that has since merged with Morgan Lewis LLP. He became a Partner at Potomac Law in 2019. 

Representative Experience

• Led buy-side and sell-side negotiations of senior executive employment terms in connection with M&A transactions, strategically positioned clients to achieve business objectives, successfully resolved contested questions, and drafted resulting employment agreements. 

• Drafted and analyzed noncompete agreements, nonsolicitation provisions, liquidated damages clauses, and other restrictive covenants. Conducted lift-out analyses to determine executive rights and obligations under existing noncompetes and related restrictive covenants. 

• Counseled RIAs on Investment Advisers Act and state investment adviser law compliance, completed and filed Forms ADV and U4, and coordinated with state regulators regarding investment adviser filing, registration, and compliance obligations. 

• Developed and implemented ethics and compliance programs, drafted codes of conduct and related internal policies, drafted and analyzed internal investigation procedures, designed ethics and compliance trainings, and worked with management teams to launch company-wide ethics and compliance initiatives. 

• Completed dozens of internal investigations (predominantly in the financial services space) regarding alleged violations of laws and internal policies. Drafted investigation reports and advised management teams on remediation and resolution. 

• Wrote and/or analyzed bylaws, conflicts of interest and segregation of duties policies, board meeting minutes, operating agreements, and other corporate documents. Advised on various startup and incorporation matters, drafted incorporation and DBA filings, and assisted clients with related compliance obligations. 

• Advised public accommodations on their obligations under the federal and state civil rights laws, including Title VII of the Civil Rights Act, the Americans with Disabilities Act, and their state law analogs. 

• Drafted and reviewed numerous employment and independent contractor agreements, employee handbooks, and various internal employment policies. Advised clients on compliance with federal and state employment laws. 

• Advocated for clients before regulatory bodies. Assisted clients in resolving disputes before reaching the point of litigation, led settlement discussions, and negotiated and drafted settlement agreements. When settlement was not possible, worked hand-in-hand with litigation counsel to achieve favorable outcomes.