As previously disclosed, on January 7, 2024, Harpoon Therapeutics, Inc., a Delaware corporation (“Harpoon”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Merck Sharp & Dohme LLC, a New Jersey limited liability company (“Merck”), and Hawaii Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Merck (“Merger Sub”), pursuant to which, and on the terms and subject to the conditions thereof, Merger Sub will merge with and into Harpoon (the “Merger”), with Harpoon surviving the Merger as a wholly-owned subsidiary of Merck. On February 8, 2024, Harpoon filed a definitive proxy statement (the “Definitive Proxy Statement”), as such may be supplemented from time to time, with the Securities and Exchange Commission (the “SEC”) in connection with, among other things, the Merger.
Certain Litigation
In connection with the Merger, one complaint has been filed against Harpoon and its directors in the United States District Court for the Northern District of California captioned Sapna Mistry v. Harpoon Therapeutics, Inc. et al., 3:24-cv-721 (filed February 7, 2024) and one complaint has been filed in the United States District Court for the District of Delaware captioned Matthew Wright v. Harpoon Therapeutics, Inc., et al., 1:24-cv-194 (filed February 13, 2024) (collectively, the “Complaints”). The Complaints generally allege that the Definitive Proxy Statement filed by Harpoon with the SEC misrepresents and/or omits certain purportedly material information relating to Harpoon’s financial projections, the analyses performed by the financial advisor to Harpoon’s Board of Directors in connection with the Merger, and potential conflicts of interest of Harpoon’s directors and officers. The Complaints assert violations of Section 14(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and Rule 14a-9 promulgated thereunder against all defendants (Harpoon, its Board of Directors and certain officers) and violations of Section 20(a) of the Exchange Act against Harpoon’s directors and officers. The Complaints seek an order enjoining the proposed Merger, or in the event that the proposed Merger is consummated, an order rescinding the Merger or awarding rescissory damages, as well as costs, including attorneys’ and experts’ fees.
Harpoon has also received seventeen additional demands from February 2, 2024 to February 21, 2024 seeking additional disclosures in the Definitive Proxy Statement by purported Harpoon stockholders (the “Demands”).
Harpoon cannot predict the outcome of any litigation or the Demands. Harpoon and the individual defendants intend to vigorously defend against the Complaints, the Demands, and any subsequently filed similar actions. It is possible additional lawsuits may be filed or additional demand letters may be received arising out of the Merger between February 21, 2024 and consummation of the Merger. Absent new or significantly different allegations, Harpoon will not necessarily disclose such additional filings or demand letters.
Harpoon believes that the disclosures set forth in the Definitive Proxy Statement comply fully with all applicable laws, and denies the allegations in the Complaints described above. Nevertheless, in order to moot plaintiffs’ disclosure claims, avoid nuisance and possible expense and business delays, and provide additional information to its stockholders, Harpoon has determined voluntarily to supplement certain disclosures in the Definitive Proxy Statement with the supplemental disclosures set forth below (the “Supplemental Disclosures”). Nothing in the Supplemental Disclosures shall be deemed an admission of the legal merit of the Complaints or the Demands described above, or of the necessity or materiality under applicable laws of any of the disclosures set forth herein. To the contrary, Harpoon specifically denies all allegations in the Complaints and the Demands that any additional disclosure was or is required or is material.
SUPPLEMENTAL DISCLOSURES
The following supplemental disclosures should be read in conjunction with the Definitive Proxy Statement, which should be read in its entirety as supplemented. The inclusion in this supplement to the Definitive Proxy Statement of certain information should not be regarded as an indication that any of Harpoon or its directors, affiliates, officers, or other representatives, or any other recipient of this information, considered, or now considers, it to be material, and such information should not be relied upon as such. Defined terms used but not defined herein have the meanings set forth in the Definitive Proxy Statement. For clarity, new text within restated paragraphs from the Definitive Proxy Statement is highlighted with bold, underlined text, and deleted text within restated paragraphs from the Definitive Proxy Statement is highlighted withstrikethrough text.