OLED's transfer agent is Equiniti Trust Company, LLC (formerly American Stock Transfer & Trust Co.):
Equiniti Trust Company, LLC (EQ)
28 Liberty Street, 53rd Floor
New York, NY 10005
phone: 800.937.5449 (toll-free), 718.921.8124 (local)
email: helpast@equiniti.com
website: https://equiniti.com/us/ast-access