Protect what you have built and use it with purpose.
Grow and preserve wealth in a disciplined way, create reliable retirement income, coordinate tax-aware decisions, and prepare a legacy that can move smoothly to the next generation.
Helping entrepreneurs, executives, and families turn financial success into lasting wealth, greater freedom, and a legacy built to endure.
I’ve spent more than 20 years helping successful people make high-impact decisions with greater clarity and control.
As CEO and Managing Partner of Coastline Wealth Management, I lead the firm with the same principles I bring to client relationships: understand the full picture, think beyond the immediate decision, and build with the long term in mind.
Whether you are growing family wealth, preparing for retirement, or planning the sale of a business, my role is to simplify the moving parts and create one coordinated strategy around what matters most.
Clients come to me when the decisions are significant, the moving parts are interconnected, and getting the strategy right matters.
Grow and preserve wealth in a disciplined way, create reliable retirement income, coordinate tax-aware decisions, and prepare a legacy that can move smoothly to the next generation.
Understand what your business is worth, strengthen continuity, prepare for succession or sale, protect key people, and build a post-transition wealth strategy around your next chapter.
Complexity becomes easier to manage when every decision is coordinated around the same priorities.
Create a disciplined investment strategy designed to support growth while accounting for market risk, inflation, taxes, and unexpected events.
Coordinate sustainable income, tax-aware planning, asset protection, and estate considerations across retirement and major life transitions.
Clarify business value, prepare succession or exit strategies, and put safeguards in place for the company, its leadership, and its people.
Turn business proceeds into a coordinated personal wealth strategy aligned with your lifestyle, family priorities, and long-term legacy.
Garrett’s role as CEO extends beyond setting the firm’s direction. It shapes how Coastline brings people, planning, investments, and service together around each client.
Build strategies that remain useful through market cycles, business transitions, and changing family priorities.
Bring the right professionals and perspectives together so important decisions support the same broader strategy.
Deliver clear communication, thoughtful preparation, and reliable follow-through at every stage of the relationship.
Whether the next step involves retirement, a business sale, or building a lasting legacy, the right strategy can help you move forward with greater clarity and confidence.
Book a Call With Garrett*AUM as of 06/30/2026. The Forbes rankings referenced (Top Next-Gen Advisors and Best-In-State Wealth Advisors) are developed by SHOOK Research. SHOOK is independent and does not receive compensation from advisors, firms, or media companies in exchange for placement on the rankings. The ranking is based on a combination of quantitative and qualitative criteria, including interviews, industry experience, compliance records, assets under management, and other factors. This ranking is not indicative of the advisor’s future performance, is not an endorsement, and may not be representative of any one client’s experience. Neither Kestra Investment Services, LLC nor Kestra Advisory Services, LLC are affiliated with Forbes or SHOOK Research.
Garrett’s leadership is supported by the advisors, investment professionals, planners, and service teams who bring Coastline’s client-first approach to life across the firm.
Cindy Grauer
Founder & President of Client Relations
David J. Mammina, CFP®, MBA, CRPC®
Partner & Financial Advisor Corporate Headquarters- Port Jefferson, Toms River, Woodbury
David became involved in the financial planning industry when he realized that financial literacy was an important part of everybody’s life but wasn’t being implemented or taught to anyone...
Shiraz Zaidi
Partner & Financial Advisor
Robert Calabretta
Chief Investment Officer
As Director of Investments, Robert Calabretta brings over 25 years of institutional investment experience to the Coastline team, where he heads the Investment Committee. Robert began his career in New York with Morgan Stanley...
Denis O'Leary
Director of Wealth Management Corporate Headquarters- Port Jefferson, Woodbury, Toms River
Denis recently joined the Coastline team in August 2022 as the Director of Wealth Management. Prior to joining Coastline, Denis was a Wealth Management, Trust and Investment Executive for over Twenty-Five years...
Chief Operating Officer
President, Business Development