This Amendment No. 15 to Schedule 14D-9 (the
“Amendment”) amends and supplements the Solicitation/ Recommendation Statement on Schedule 14D-9 (as amended or supplemented from time to time, the
“Schedule 14D-9”) previously filed by F-star Therapeutics, Inc., a Delaware corporation (the “Company”),
with the Securities and Exchange Commission on July 7, 2022 relating to the offer by invoX Pharma Limited, a private limited Company organized under the laws of England and Wales (“Parent”), Fennec Acquisition Incorporated, a
Delaware corporation (“Purchaser”) and a direct wholly owned subsidiary of Parent, and Sino Biopharmaceutical Limited, a company organized under the laws of the Cayman Islands (“Guarantor”) to acquire any and all of
the issued and outstanding shares of Common Stock (the “Company Shares”), at a purchase price of $7.12 per Company Share (the “Offer Price”), net to the seller thereof in cash, and less any required withholding
taxes, upon the terms and subject to the conditions set forth in the Offer to Purchase, dated July 7, 2022 (as amended or supplemented from time to time, the “Offer to Purchase”), and in the related Letter of Transmittal
(which, together with the Offer to Purchase, as each may be amended or supplemented from time to time, constitute the “Offer”).
Except
as otherwise set forth below, the information set forth in the Schedule 14D-9 remains unchanged and is incorporated by reference as relevant to the items in this Amendment. Capitalized terms
used and not defined herein shall have the meanings given to such terms in the Schedule 14D-9. This Amendment is being filed to reflect certain updates as reflected below.
Item 8. Additional Information.
Item 8 of the Schedule 14D-9 is hereby amended and supplemented by adding the
following:
“On February 9, 2023, Purchaser, Parent and Guarantor extended the Offer to 5:00 p.m., Eastern Time, on February 22, 2023,
unless further extended. The purpose of the extension is to provide additional time for the parties to complete negotiations with the Committee on Foreign Investment in the United States (“CFIUS”) on the definitive terms of a mitigation
agreement. The parties believe they are in the late stages of negotiating definitive terms of such mitigation agreement in order to permit the removal of CFIUS’s Interim Order. However, there can be no assurances that the parties will reach
agreement with CFIUS on a mitigation agreement.
In connection therewith, the parties also entered into Amendment No. 6 to the Merger Agreement to
extend the End Date from one minute past 11:59 p.m., Eastern Time, on February 10, 2023 to one minute past 11:59 p.m., Eastern Time, on February 24, 2023. As previously described, the Merger Agreement may be terminated by either party,
subject to certain exceptions, if any of the Offer conditions, are not satisfied or waived, to the extent waiveable, by Purchaser on or before the End Date, as defined in the Merger Agreement, as amended, unless further amended by the parties.”
Forward-Looking Statements
This Amendment
No. 15 contains forward-looking statements. Forward-looking statements are generally identified by the words “expects”, “anticipates”, “believes”, “intends”, “estimates”, “plans”,
“will be” and similar expressions. These forward-looking statements include, without limitation, statements related to the consummation of the acquisition of the Company, the availability of mitigation measures and other statements that
are not historical facts. These forward-looking statements are based on Parent’s and the Company’s current expectations and inherently involve significant risks and uncertainties. Actual results and the timing of events could differ
materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, risks related to the parties’ ability to complete the transaction on the proposed terms and
schedule; whether sufficient stockholders of the Company tender their shares in the Transaction; whether the parties can address the concerns raised by CFIUS sufficiently to enable the interim order to be revoked or terminated, or to otherwise
permit the closing of the transaction or the equity investment provided for in the Merger Agreement in the event of certain terminations related to the Foreign Investment Condition; whether the Parties and CFIUS will be able to agree on mitigation
terms; the possibility that some of the Offer conditions will not be satisfied or waived by Parent, to the extent waiveable, by the Expiration Date; and other risks related to the Company’s business detailed from
time-to-time under the caption “Risk Factors” and elsewhere in the Company’s SEC filings and reports, including the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 and the Company’s Quarterly Reports on Form 10-Q for the quarters ended June 30, 2022 and September 30, 2022. The Company
undertakes no duty or obligation to update any forward-looking statements contained in this report as a result of new information, future events or changes in their expectations, except as required by law.