Investor Relations

Stamps.com, Inc.
Investor Relations
1990 E. Grand Avenue
El Segundo, CA 90245
T: 310-482-5830
invrel@stamps.com

Transfer Agent

Computershare Trust Company, N.A.
P.O. Box 43078
Providence, RI 02940
T: 800-962-4284
F: 312-601-2312

Auditor

Ernst & Young LLP