vote is important. Whether or not you expect to attend in person, we urge you to vote your shares as promptly as possible by:
accessing the Internet website specified on your proxy card;
calling the toll-free number specified on your proxy card; or
marking, signing, dating and returning the enclosed proxy card in the postage-paid envelope provided,
that your shares may be represented and voted at the Asterias Special Meeting. If your shares are held in the name of a broker,
bank, trust company or other nominee, please follow the instructions on the voting instruction card furnished by the record holder.
note that if you hold shares in different accounts, it is important that you vote the shares represented by each account.
enclosed joint proxy statement/prospectus provides a detailed description of the Merger and the Merger Agreement. We urge you
to read this joint proxy statement/prospectus, including any documents incorporated by reference, and the annexes carefully and
in their entirety. If you have any questions concerning the Merger or this joint proxy statement/prospectus, would like additional
copies or need help voting your shares of Asterias Common Stock, please contact Asterias’ proxy solicitor:
Moines, WA 98198
Free Telephone: 877-870-8565
appreciate your continued support of Asterias and look forward to either greeting you personally at the Asterias Special Meeting
or receiving your proxy.
order of the Board of Directors,|