Attorney Sean J. McGowan

"I Believe In Building Strong And Lasting Relationships."


Sean J. McGowan

Sean J. McGowan represents emerging growth, middle market and public companies and investment firms in their corporate, securities, financing, borrowing, merger & acquisition and other legal matters.

Mr. McGowan is:

  • President of the Columbian Lawyers’ Association of Suffolk County.
  • Secretary of the Confederation of Columbian Lawyers of New York State.
  • Member of the Columbian Lawyers’ Association of Nassau County.
  • Member of the New York State Bar Association and its Cannabis Law Section.
  • Member of the International Cannabis Bar Association.
  • Member of the Cannabis Association of New York.
  • Member of the Chaminade Long Island Businessmen’s Association, the Suffolk County Bar Association and the Long Island Capital Alliance.

He authored an article entitled A Delayed Search of an Automobile Makes for an Unconstitutional Seizure, published in the Touro Law Review May 2013.

Mr. McGowan received a

  • J.D., summa cum laude,  from Touro College in 2014, where he served as an editor of the Touro Law Review.
  • B.S., magna cum laude, from Adelphi University in 2011.

Mr. McGowan is admitted to practice law in the State of New York.

Mr. McGowan:

  • has been named one of the top cannabis lawyers in the world by the Cannabis Law Report. 
  • is a 2020-2023 New York Metro Rising Star.
  • was named a 40 under 40 recipient by Long Island Business News.
  • received the Huntington Chamber of Commerce Young Professionals’ Long Island’s Top 30 Young Professionals Award in May 2013.
  • was a Contributing Editor of the Cannabis Law Digest.



“…Sean brings not only dedication and diligence, but also a lot of heart and passion about relationships.

Send an email to Sean J. McGowan

Kaufman McGowan PLLC

190 Motor Parkway, Suite 200
Hauppauge, New York 11788

(631) 972-0042

FAX (631) 410-1007

additional offices:

new york city

hudson valley