Employee Email
From: Stephen Dilly
To: All SRRA Staff
Subject: Sierra Enters Agreement to be Acquired by GSK
Attachments: Project Sagittarius Joint Press Release, Social Media Policy
Dear Sierra Team:
As you probably know by now, late last night Sierra Oncology entered into an agreement to be acquired by GSK.
I invite you all to an All Hands Meeting this morning at 9:00 am PT to share more information on the deal and what lies ahead. A calendar invite will be distributed shortly with the dial-in information.
The joint press release announcing the deal is attached to this email for your ease of reference. Please note social media posts have been made to both the Sierra and GSK LinkedIn and Twitter accounts. As a reminder of our Social Media Policy, also attached, you are welcome to like and share posts, but please keep your comments generic (e.g. “big news at Sierra today”) and avoid adding opinions about the deal. If you have questions on the policy, please contact Christina Thomson.
Thank you and I look forward to seeing you shortly,
Stephen
Additional Information and Where to Find It
This communication is being made in respect of the proposed acquisition of Sierra Oncology, Inc. (“Sierra”) by GlaxoSmithKline plc (“GSK”). In connection with the proposed acquisition, Sierra intends to file with the Securities and Exchange Commission (the “SEC”) and mail to its stockholders a proxy statement (the “Proxy Statement”) in connection with the solicitation of proxies to approve the transaction. Sierra’s stockholders are urged to read the Proxy Statement and any other relevant documents filed with the SEC or delivered to Sierra’s stockholders in connection with the transaction when such materials become available because they will contain important information about the transaction and the parties to the transaction. The Proxy Statement and all other documents filed by Sierra with the SEC will be available at no charge on the SEC’s website at www.sec.gov. You may read and copy those documents or other information filed by Sierra at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. A free copy of the Proxy Statement and all other documents filed by or caused to be filed by Sierra with the SEC will also be available by visiting Sierra’s website (https://www.sierraoncology.com).
Participants in the Solicitation
Sierra and certain of its respective directors and executive officers may be deemed to be participants in the solicitation of proxies from Sierra’s stockholders with respect to the proposed acquisition. Information about Sierra’s directors and executive officers is available in Sierra’s proxy statement dated April 23, 2021 for its 2021 Annual Meeting of Stockholders. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the Proxy Statement and all other relevant materials to be filed with the SEC or delivered to Sierra’s stockholders regarding the proposed acquisition when such materials become available. Sierra’s stockholders are urged to read such materials when they become available