208 newly registered businesses tracked in Sag Harbor, New York. Browse by category or see the latest filings below.
Sag Harbor, NY has 208 newly registered businesses in our database. 11 of those landed in the past 30 days. We refresh this page daily as new Sag Harbor companies appear in the New York Division of Corporations records.
The most active industries in Sag Harbor are Real Estate (20), Property Management (4), and Holding Company (4). Use the category list below to narrow the results to a single industry, or scroll down for the most recent filings of any type.
Every entry shows the business name, filing date, and category, plus verified owner and contact information where we have it. The latest Sag Harbor filing was on Jun 4, 2026. You can jump back to the full New York view any time to compare Sag Harbor against other markets.
Get owner name, phone, email, and website for newly registered businesses delivered to your inbox daily.
Start Your Free Trial ›