New York attorney · Reg. #5049234
Holly Danielle Mergenhagen
Registered — renewal due (registry: Due to reregister within 30 days of birthday)
Current employer
Seneca Holdings LLC · Williamsville, NY · since at least September 2026
Admission
Admitted 2012, Fourth Department · CASE WESTERN RESERVE UNIVERSITY
Employment history
- Seneca Holdings LLC · Williamsville, NY · current
Compiled from NYS Office of Court Administration registration records, published NY Appellate Division decisions, and SEC orders against attorneys; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.