Isaac Mamaysky is an experienced Partner who provides strategic corporate, securities, and employment law counsel to management teams and in-house attorneys across industries. His clients include financial services providers, large corporations, private funds, registered investment advisers, and closely held companies. 

Mr. Mamaysky regularly leads complex negotiations, drafts commercial contracts, and serves as outside general counsel to a number of closely held companies, startup ventures, and entrepreneurs. He also advises clients on corporate ethics and compliance matters, conducts internal investigations, provides employment law and HR counsel, and writes employment agreements and internal employment policies.

Beyond his practice, Mr. Mamaysky has extensive industry experience and holds a Series 65 license. He is the cofounder and chief compliance officer of a New York registered investment adviser, which gives him unique insight when providing counsel to other investment advisers and private funds. Relying on this experience, Mr. Mamaysky founded Potomac Law Group’s Investment Advisers, Asset Managers, and Private Funds practice. 

Mr. Mamaysky has published numerous articles concerning corporate, securities, and employment law matters, including in the: Harvard Law School Forum on Corporate Governance; the Fordham Journal of Corporate and Financial Law; the UC Davis Business Law Journal; the Santa Clara Law Review; the Washburn Law Journal; the Loyola Chicago Journal of Regulatory Compliance; the ABA Journal of Labor and Employment Law; 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 Albany Law School, where his current subjects taught include ethics and compliance and employment law. He also sits on the law school’s steering committee for a new Corporate Compliance graduate program.

Beyond his traditional corporate work, 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, and especially enjoys representing day camps, overnight camps, and camp industry associations.

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 in Potomac Law Group in 2019.

Representative Experience

  • Led negotiations of various complex commercial relationships, strategically positioned clients to achieve organizational objectives, successfully resolved contested questions, and drafted resulting commercial contracts.
  • Wrote and/or analyzed bylaws, conflicts of interest and segregation of duties policies, board meeting minutes, operating agreements, partnership agreements, and other corporate documents. Advised on various startup and incorporation matters, drafted incorporation and DBA filings, and assisted clients with related compliance obligations.
  • Conducted dozens of internal investigations (predominantly in the financial services space) regarding alleged violations of laws and internal policies. Drafted numerous investigation reports and advised management teams on remediation and resolution.
  • Developed and implemented corporate ethics and compliance programs, drafted codes of conduct and related internal policies, designed ethics and compliance trainings, and worked with management teams to launch company-wide ethics and compliance initiatives.
  • Advised private funds and investment advisers on various securities law compliance matters, completed and filed Forms ADV and U4, and coordinated with state regulators regarding investment adviser filing, registration, and compliance obligations.
  • 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. Wrote confidentiality, NDA, and noncompete agreements.
  • 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.

Publications and Speeches


  • Letter to a One L Friend: A Little Guide to Seeing the Big Picture and Succeeding in Law School, Carolina Academic Press (2019).

o Featured in Making the One L Path (a Little) Easier by Joel Brown, Bostonia (2019).

o Reviewed favorably in the Canadian Law Library Review by Katie Cuyler (2020).

  • The Growth Equation, Healthy Learning Press (forthcoming 2023).

Recent Articles

To read Isaac’s articles, please visit SSRN.

  • The SEC Sets Its Sights on ESG, Harvard Law School Forum on Corporate Governance (2023).
  • The Investment Adviser Marketing Rule: An Analysis and Compliance Guide, Washburn Law Journal (forthcoming 2023).
  • A Big Picture Overview of the SEC’s New Investment Adviser Marketing Rule, Duke University Financial Economics Center, FinReg Blog (forthcoming 2023).
  • Finding Happiness in the Law: Lifelong Learning as a Path to Meaning and Purpose, Santa Clara Law Review (2022).
  • Can Investment Advisers Ask Clients for Online Reviews? The Implications of the SEC’s New Marketing Rule, Fordham Journal of Corporate and Financial Law (2022).
  • Working from Home: Unraveling the Employment Law Implications of the Remote Office, ABA Journal of Labor and Employment Law (Saint Louis University School of Law) (2022).
  • What to Know When Employees Split Time Between Home and Office, Bloomberg Law (2022).
  • Employment Law Implications of Remote Work, Bloomberg Practical Guidance Series (2022).
  • Understanding Ethics and Compliance, Loyola University Chicago Journal of Regulatory Compliance (2021).
  • The Future of Work: Exploring the Post-Pandemic Workplace from an Employment Law and Human Resources Perspective, UC Davis Business Law Journal (2021).
  • Can Employers Mandate the COVID Vaccine? Assessing the Implications of the Emergency Use Authorization, Mitchell Hamline Law Review Amicus Curiae (2021).
  • Rehiring Furloughed and Laid Off Workers Post-Pandemic, Law 360, Expert Analysis, with Wendy Fischman (2020).
  • What Initial Reopenings Teach Us About Virus Safety Plans, Law 360, Expert Analysis (2020).
  • Employer Takeaways from EEOC Virus Screening Guidance, Law 360, Expert Analysis (2020).
  • Role for COVID-19 Liability Waivers in Employment is Limited, Law 360, Expert Analysis, with Mark Papadopoulos (2020).
  • Furloughs: Weighing the Unemployment Costs and Benefits, Law 360, Expert Analysis (2020).
  • Paid Leave: The Intersection of NY & Federal Laws, Westchester County Bar Association (2020).
  • NY's Paid Leave Law in Response to COVID-19, Westchester County Bar Association (2020).
  • Ask the EEOC: Key Takeaways for Employers from the March 27th Webinar, Westchester County Bar Association (2020).
  • Supreme Court Decides Whether to Protect Transgender Staff, Camp Business Magazine (2020).
  • The FTC Has Its Sights on COPPA, and Edtech Providers Should Take Notice, EdSurge (2019)

Recent Speaking Engagements

  • Remote Work: Legal and Tax Implications, Fordham Business School (2022).
  • The Disconnect: Exploring the Virtual Connection between Lawyers and Clients, Washburn University School of Law (2022).
  • The Impact of the Pandemic (and other Challenges) on the Legal Profession and Public Institutions, Santa Clara Law Review Symposium on the Future of the Legal Profession (2022).
  • Boosting Employee Morale in the Quiet Quitting Era, Albany Law School (2022).
  • Lifelong Learning as a Path to Meaning and Purpose, University of Rhode Island (2021).
  • The Future of Work, Society for Human Resource Management (2021).
  • The Post-Pandemic Workplace: An HR and Employment Law Perspective, Albany Law School (2021).
  • Issues in Employment Law and COVID-19, New York Law School, Center for Business and Financial Law (2021).
  • Legal Practice and the Law School Experience, University of Connecticut (2020).
  • Organizational Risk Mitigation, Clemson University (2020). 
  • Rehiring from Layoffs and Furloughs: Who to Bring Back and How? Federal Bar Association, with Wendy Fischman (2020).
  • Reopening, and Staying Open, During the Pandemic: Creating a COVID Safety Plan, LawLine (2020).
  • Reopening Workplaces During COVID: Rehiring Staff and Mitigating Risk through Health Screenings and Liability Waivers, LawLine, with Wendy Fischman (2020).
  • Employer and School Liability for Reopening During COVID-19, Rossdale CLE, on a panel (2020).
  • (un)Employment Law in the COVID-19 Era, Nonprofit Montgomery, with Wendy Fischman (2020).
  • What Executive Leadership and HR Professionals Need to Know, Potomac Law Group Client Webinar, with Catherine Guttman-McCabe, Mark Papadopoulos, and Wendy Fischman (2020).

Memberships and Affiliations

  • Society for Human Resource Management, National and New York City Chapter

  • Employment Law Committee, Westchester County Bar Association.

News, Events & Insights


Boston University School of Law, J.D.

  • cum laude
  • Paul J. Liacos Distinguished Scholar
  • Edward F. Hennessey Scholar
  • Member of the International Law Journal

University of Rhode Island, Honors Program, B.A. in Philosophy

  • summa cum laude
  • Reslow-Bannon Award for Embodying the Spirit of the Honors Program

Previous Experience

  • Bingham McCutchen LLP (now Morgan, Lewis & Bockius LLP)


  • Connecticut
  • New York
  • U.S. District Court for the Southern District of New York

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