Broker Check

(877) 405-0910


We believe our teamwork approach adds a broader perspective to all we do and provides increased benefits to our clients.

Our team of financial professionals can help you address:

  • Protections & Risk Manangement
  • Retirement investing and distribution strategies
  • Estate conservation issues
  • Investing principles and strategies

We also can answer your questions, including:

  • Do I have enough life insurance for my family?
  • Are my investments working hard enough?
  • What’s the best approach for college savings?
  • What are the elements of a sound estate strategy?
  • Can I retire early?

Our experienced professionals have helped many people just like you with similar issues and concerns. We specialize in creating an approach that is designed to address your individual situation.


Dennis J. O’Sullivan, CLU®,ChFC®


(631) 870-6814

(631) 866-2107

Dennis J. O’Sullivan brings over 28 years of experience in the financial services industry to Insignis Financial Group. Dennis specializes in comprehensive financial services for business owners, executives and professionals.Dennis is...
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Michael P. O’Sullivan


(877) 405-0910

(631) 866-2107

Michael P. O’Sullivan is a Financial Advisor with Insignis Financial Group. Michael is an experienced professional with a successful insurance and investment practice that has grown through the business marketplace and the Group...
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