Driving Sustainability Through Leadership
With over 100 years of combined expertise in environmental services, Boston Green’s Executive Leadership Team embodies a commitment to innovation, sustainability, and operational excellence. Their deep industry knowledge and hands-on experience guide our mission to create a cleaner, greener future.
At Boston Green, leadership isn’t just about making decisions—it’s about setting an example. From pioneering sustainable practices to fostering a culture of accountability and collaboration, our leaders inspire us to push boundaries, embrace challenges, and deliver exceptional results for our clients and communities. Together, they are shaping a legacy of environmental stewardship and progress that drives everything we do.
Adam Dennison
Chief Executive Officer
Adam Dennison is the CEO of Boston Green Company, a position he has held since July 2025. With a robust background in operational management and business development, Adam brings extensive experience from the environmental services, petroleum, and utility construction sectors. Prior to his current role, he served as Vice President of Boston Green as well as the Director of Strategic Field Service Accounts and Director of Business Development at ACV Enviro. In these positions, Adam successfully developed environmental field service sales, coached account executives to close new business, and collaborated with operations management to execute new initiatives. His earlier career includes roles as General Manager at Boston Green Company and Operations Manager at NRC National Response Corporation, where he managed complex projects involving soil remediation, environmental construction, and industrial maintenance.
Adam is highly skilled in petroleum management, industrial cleaning, emergency spill response, confined space cleaning services, storage tank services, environmental awareness, utility construction, and hazardous waste management. A proven sales professional, he has consistently grown revenues beyond set goals. Adam holds a Bachelor’s Degree in Project Management from Wentworth Institute of Technology, where he graduated with the highest GPA in his major. His comprehensive expertise and strategic vision make him an invaluable asset to the Boston Green team.
Sarah Sessa-McCaughey
Chief Financial Officer
Sarah Sessa-McCaughey serves as Chief Financial Officer at Boston Green Company, overseeing the company’s financial operations and bringing a disciplined blend of financial leadership, strategic growth, and operational expertise to the executive team.
Sarah’s career spans senior financial leadership across multiple industries, with a consistent record of building strong financial foundations and guiding organizations through complex growth environments. Before joining Boston Green Company, she served as Chief Financial Officer of Coast of Maine Organic Products Inc., Senior Vice President of Finance at WIN Waste Innovations, and segment CFO at Iron Mountain. Across these roles, she developed deep expertise in corporate finance, strategic planning, and operational scale.
A Certified Public Accountant, Sarah holds a Bachelor of Science in Accounting and a Master of Business Administration from the University of Massachusetts Dartmouth.
She is a member of Chief, a private network for senior executive women, and has volunteered as a mentor with Girls With Impact for more than three years—reflecting a sustained commitment to developing the next generation of business leaders.
Ryan Dougherty
Vice President of Operation
Ryan Dougherty brings over two decades of operational leadership and environmental expertise to his role as Vice President of Operations at Boston Green. Known for his performance-driven approach and uncompromising integrity, Ryan has a proven track record of optimizing processes, ensuring regulatory compliance, and driving profitability across diverse organizations.
Ryan’s career spans key leadership roles, including Director of Operations and Operations Manager, where he has successfully managed large-scale remediation projects, enhanced operational efficiency, and fostered cross-functional collaboration. Most recently in his Operations Manager role, Ryan consistently exceeded performance targets, achieved 100% compliance with environmental health and safety programs, and implemented strategies that improved quality and profitability.
A resourceful leader, Ryan excels in staff management, conflict resolution, and developing innovative solutions to complex challenges. His expertise in financial administration, regulatory compliance, and operational efficiency has made him a trusted leader in the environmental services industry.
Ryan is also a proud veteran of the United States Navy, where he served aboard the USS John F. Kennedy. During his service, he was honored as Sailor of the Year in 2006 and received two Navy Achievement Medals. He holds a Bachelor of Science in Business Administration from Florida State College at Jacksonville and an Associate of Arts in Photojournalism from the Defense Information School.
Based in Plymouth, MA, Ryan is passionate about advancing Boston Green’s mission of sustainability and environmental innovation. Outside of work, he enjoys mentoring others, exploring the outdoors, and contributing to his local community.