Lawrence Siff, Founder and CEO of Neptune Advisors and C Level Community, is a recognized expert in maximizing corporate value. Neptune Advisors is an advisory firm led by former operators that focuses on growth strategy, operational improvement, and value creation for middle-market companies on. C Level Community connects leaders and shares industry best practices to optimize a company’s competitive edge, including access to online experts and an in-person Thought Leadership Speaker Series featuring world-renowned CEOs. Neptune Advisors was named the winner of Corporate LiveWires’ Innovation & Excellence Award in 2023 and 2025, one of the most highly anticipated and celebrated recognitions within the global corporate community.

Mr. Siff, a National Association of Corporate Directors (NACD) Board Leadership Fellow, currently serves on the Board of Directors of Myjove Corporation, Two Ten International Footwear Foundation, Museum of Science and Brimmer & May School (past Chair).

He previously served as a board member for Jones and Vining, Mason Companies Inc., Airmid Critical Care Products, Imagination Brands (Chair), Resilient Systems (sold to IBM), Kayem Foods, POW Audio, Cherry Tree Products Inc., B/W/A International and Ambassador Shoe Corporation. Formerly, Mr. Siff served on the boards of Asia-America Chamber of Commerce (Chair), Boston Aid to the Blind (Chair), Winsor School, New England Business Association, New England String Ensemble, and the Association for Corporate Growth.

He has been a contributor to Forbes Magazine and a lecturer at Harvard Business School, Babson Olin Graduate School of Business and Brandeis University International Business School. After beginning his career at Procter and Gamble, Mr. Siff was the President and CEO of seven companies in manufacturing, technology, consumer, wholesale, and retail businesses.