Sydney Elizabeth Hatten 1 Rockwood Rd Sleepy Hollow, New York, 10591 Phone: 914-847-3320 Company Name: Regeneron Pharmaceuticals Lawyer Category: Banking & Finance Profile Let this business know you found them on Westchester Magazine's Online Directories. Locations Sleepy Hollow 1 Rockwood Rd Sleepy Hollow, New York 10591 Claim/Edit Listing