Mirati Therapeutics Announces Closing Of Public Offering Of Common Stock And Full Exercise Of Underwriters' Option To Purchase Additional Shares

SAN DIEGO, Jan. 22, 2019 /PRNewswire/ -- Mirati Therapeutics, Inc. (Nasdaq: MRTX) today announced the closing of its previously announced underwritten public offering of 1,854,838 shares of its common stock at a public offering price of $62.00 per share. This includes the exercise in full by the underwriters of their option to purchase up to 241,935 additional shares of common stock. The aggregate gross proceeds to Mirati from this offering were approximately $115.0 million, before deducting underwriting discounts and commissions and estimated offering expenses payable by Mirati.

J.P. Morgan Securities LLC, Citigroup Global Markets Inc., Cowen and Company, LLC, Barclays Capital Inc. and Credit Suisse Securities (USA) LLC acted as joint book-running managers in the offering.

The shares of common stock described above were offered by Mirati pursuant to a shelf registration statement filed by Mirati with the Securities and Exchange Commission ("SEC") that became automatically effective upon filing. A final prospectus supplement and accompanying prospectus relating to the offering was filed with the SEC and is available on the SEC's website located at http://www.sec.gov. Copies of the final prospectus supplement and the accompanying prospectus relating to the offering may be obtained from J.P. Morgan Securities LLC, Attention: Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone at (866) 803-9204, or by email at prospectus-eq_fi@jpmchase.com; from Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone at (800) 831-9146; from Cowen and Company, LLC, c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, NY, 11717, Attn: Prospectus Department, or by calling (631) 274-2806; from Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by calling (888) 603-5847, or by email at Barclaysprospectus@broadridge.com; or from Credit Suisse Securities (USA) LLC, Attention: Prospectus Department, One Madison Avenue, New York, NY 10010, or by telephone at (800) 221-1037, or by email at ecm.prospectus@credit-suisse.com.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.

About Mirati Therapeutics

Mirati Therapeutics, Inc. is a clinical-stage oncology company developing product candidates to address the genetic and immunological promoters of cancer. Mirati's precision oncology clinical programs utilize next-generation genomic testing to identify and select cancer patients who Mirati believes would be most likely to benefit from targeted drug treatment. In immuno-oncology, Mirati is advancing clinical programs where its product candidates have the potential to improve the immune environment of tumor cells and may enhance and expand the efficacy of existing cancer immunotherapy medicines when given in combination. Mirati's pre-clinical programs include potentially first-in-class and best-in-class product candidates specifically designed to address mutations and tumors where few treatment options exist. Mirati approaches each of its discovery and development programs with a singular focus: to translate its deep understanding of the molecular drivers of cancer into better therapies and better outcomes for patients.

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SOURCE Mirati Therapeutics, Inc.