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Contacts

IR Contact

IR@SiennaBio.com

Sean Andrews
Senior Director, Investor Relations
sandrews@SiennaBio.com

Media Contact

media@SiennaBio.com

Transfer Agent

Wells Fargo Shareowner Services
www.shareowneronline.com
800-468-9716 Toll-Free
651-450-4064 Outside the United States
Shareowner Relations Specialists are available Monday through Friday, from 7:00 a.m. to 7:00 p.m. Central Time

Written correspondence
Wells Fargo Shareowner Services
P.O. Box 64874
St Paul, MN 55164

Certified and overnight delivery
Wells Fargo Shareowner Services
1110 Centre Pointe Curve, Suite 101
Mendota Heights, MN 55120