Astellas Pharma US, Inc./Astellas US LLC
Phone: 1 (800) 695-4321
Located in Deerfield, Illinois, Astellas Pharma US, Inc./Astellas US LLC is the site for North American corporate headquarters.

Astellas Pharma Global Development, Inc.
Phone: 1 (800) 695-4321
Located in Deerfield, Illinois, Astellas Pharma Global Development is the global development headquarters for the company.

Astellas Pharma Canada, Inc.
Phone: 1 (800) 575-1382
Web: http://www.astellas.com/ca
Located near Toronto, Ontario, Astellas Pharma Canada, Inc. is the marketing and sales headquarters of Astellas products in Canada.

Astellas US Technologies, Inc.
Phone: 1 (405) 217-6400
Located near Oklahoma City, in Norman, OK, Astellas US Technologies, Inc. provides manufacturing and distribution for VESIcare.

Astellas Research Institute of America
P.O. Box 188
Skokie, IL 60076-0188
Phone: 1 (847) 467-4470
Astellas Research Institute of America provides laboratory support for several Astellas products in development.

Astellas Venture Management LLC
P.O. Box H
Los Altos, CA 94023
Web: http://www.astellasventure.com
Astellas Venture Management is the corporate venture capital arm of Astellas Pharma Inc.

Agensys, Inc.
Located in Santa Monica, CA, Agensys, Inc. is a U.S. subsidary of Astellas and is responsible for oncology research.

Urogenix, Inc.
Located in Durham, NC, Urogenix, Inc. is a U.S. subsidiary of Astellas and is responsible for urology research.