Information Request

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ADVERSE EVENT REPORTING ONLY: To report an Adverse Event or safety concern with use of an Ionis product, please call (800) 491-2664. If you are experiencing a medical emergency, please dial emergency services such as 911 or 112. For any other assistance, please call our Corporate Headquarters: (760) 931-9200.


Resumes are only accepted at the time of application for a current, open position for which we are recruiting.  Please go to our Careers page to view and apply for our current open positions.

Transfer Agent

Inquiries related to stock and transfer requirements, including lost stock certificates and changes of name or address, should be directed to our Transfer Agent.

American Stock Transfer & Trust Company
or via their website at