INVESTORS & MEDIA
SEC Filing Details
SEC Filing Details
Document Details
Form
Filing Date
Apr 6, 1999
Document Date
Apr 6, 1999
Form Description
An amendment to the SC 13G filing
Filing Group
Other
Company
Regeneron Pharmaceuticals Inc.
Issuer
REGENERON PHARMACEUTICALS, INC.
Filer
WARBURG PINCUS ASSET MANAGEMENT INC