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Give us a call 631-907-3107

Dayton Ritz & Osborne

In a world filled with off-the-shelf products and thinking, Dayton Ritz + Osborne decidedly differs. Our objective is not to sell you insurance, but to deeply satisfy you with solutions meticulously customized to meet your needs. With roots in the Hamptons dating back to 1875, we have a depth of knowledge that makes us the area’s preeminent experts.
We specialize in simplifying complex risk management for successful individuals, and are leaders in homeowners, private client and commercial insurance. Although our offices, and our hearts, are in the Hamptons, our wisdom is national and international.
Office hours: Monday - Friday, 8:30 am - 4:00 pm EST
Your personal agent
John McGuirk

John McGuirk

A native of East Hampton, John has been with Dayton, Ritz + Osborne since 1989. He graduated in 1986 from Saint Joseph’s College in Maine with a B.A. degree.


John is passionate about the community. He has been both President and Board Chair of the East Hampton Village Preservation Society, he has served on the East Hampton Village Zoning Board of Appeals and has been a Trustee of both the East Hampton Historical Society and the East Hampton Library.


In his free time John enjoys a round of golf, indoor cycling and relaxing on the beach or in his backyard. John and his wife live in East Hampton and have two sons.

Give us a call 631-907-3107

Our Products & Services

  • Home
  • International Exposures
  • Automobile
  • Excess Liability
  • Private Collections
  • Flood / Excess Flood
  • Watercraft / Yachts
  • Builder's Risk
  • Aviation

Give us a call

Have questions? Call us today for more information.

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