Deciphera Pharmaceuticals Announces Closing of Public Offering of Common Stock and Full Exercise of Under

Deciphera Pharmaceuticals, Inc. DCPH, a biopharmaceutical company focused on discovering, developing, and commercializing important new medicines to improve the lives of people with cancer, today announced the closing of its underwritten public offering of 7,986,111 shares of its common stock. The shares of common stock sold include 1,041,666 shares pursuant to the option granted by Deciphera to the underwriters, which option was exercised in full. The public offering price of each share of common stock was $18.00. The aggregate gross proceeds to Deciphera from this offering were approximately $143.7 million, before deducting underwriting discounts and commissions and other estimated offering expenses.

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.