Vical Incorporated

10390 Pacific Center Court

San Diego, CA 92121-4340

U.S.A.

Tel: 858-646-1100

Fax: 858-646-1150

Email: info@vical.com

Use the above mailing address for all Vical employees.

Business Development

Email: licensing@vical.com

Human Resources

Tel: 858-334-1447

Email: hr@vical.com

Investor Relations / Media

Alan Engbring

Executive Director, Investor Relations

Tel: 858-646-1127

Email: ir@vical.com

Purchasing

Vical is a BIOCOM / San Diego purchasing group member. We are not looking for new suppliers in the areas of computer hardware, laboratory supplies, murine research, office supplies, travel, telecommunications, relocation, news distribution, nor waste management. New suppliers may forward their line cards to Purchasing Department at the corporate address shown above.

Email: purchasing@vical.com

Transfer Agent

BNY Mellon Shareowner Services
P.O. Box 358015
Pittsburgh, PA 15252-8015
Tel: 877-419-8539
TDD for Hearing Impaired: 800-231-5469
Foreign Shareowners: 201-680-6578
TDD Foreign Shareowners: 201-680-6610
www.bnymellon.com/shareowner/equityaccess

General Counsel

Cooley LLP

4401 Eastgate Mall

San Diego, CA 92121-9109

Tel: 858-550-6000

www.cooley.com

Independent Registered Public Accounting Firm

Ernst & Young LLP

4370 La Jolla Village Drive, Suite 500

San Diego, CA 92122-1249

Tel: 858-535-7200

www.ey.com