Deciphera Pharmaceuticals Prices of Public Offering of Common Stock

WALTHAM, Mass.–(BUSINESS WIRE)–Deciphera Pharmaceuticals, Inc. (NASDAQ: DCPH), a biopharmaceutical company focused on discovering, developing, and commercializing important new medicines to improve the lives of people with cancer, today announced the pricing of an underwritten public offering of 6,944,445 shares of its common stock at a public offering price of $18.00 per share. The aggregate gross proceeds to Deciphera from this offering are expected to be approximately $125 million, before deducting underwriting discounts and commissions and other estimated offering expenses. In addition, Deciphera has granted the underwriters a 30-day option to purchase up to an additional 1,041,666 shares of common stock at the public offering price of $18.00 per share, less underwriting discounts and commissions. The offering is expected to close on January 24, 2023, subject to the satisfaction of customary closing conditions. All of the shares of common stock are being offered by Deciphera.

Deciphera intends to use the net proceeds from the offering to fund its planned Phase 3 INSIGHT study of QINLOCK® versus sunitinib in second-line GIST patients with mutations in KIT exon 11 and 17/18 only; to fund the development of vimseltinib, including completion of its Phase 3 MOTION study of vimseltinib in tenosynovial giant cell tumor patients, additional clinical trials as well as clinical research outsourcing and manufacturing of clinical trial material and pre-commercial and medical affairs capabilities related to vimseltinib; to fund the development of DCC-3116, including multiple expansion cohorts in the ongoing Phase 1b combination dose escalation studies and potential Phase 2 expansion combination cohorts in multiple tumor types as well as clinical research outsourcing and manufacturing of clinical trial material; to fund the research and development of its pan-RAF program, as well as a potential new development candidate and other new research activities from its proprietary discovery engine of novel switch control inhibitors; and the remainder for working capital purposes, including general operating expenses.

J.P. Morgan, Jefferies, Cowen, and Guggenheim Securities are acting as joint book-running managers for the offering.

About Deciphera Pharmaceuticals

Deciphera is a biopharmaceutical company focused on discovering, developing, and commercializing important new medicines to improve the lives of people with cancer. We are leveraging our proprietary switch-control kinase inhibitor platform and deep expertise in kinase biology to develop a broad portfolio of innovative medicines. In addition to advancing multiple product candidates from our platform in clinical studies, QINLOCK® is Deciphera’s switch control inhibitor for the treatment of fourth-line GIST. QINLOCK is approved in Australia, Canada, China, the European Union, Hong Kong, Switzerland, Taiwan, the United Kingdom, and the United States.