Mirna Therapeutics
10-01-15

Mirna Therapeutics Announces Pricing of its Initial Public Offering

AUSTIN, Texas - October 1, 2015 - Mirna Therapeutics, Inc., a clinical stage biopharmaceutical company developing a broad pipeline of microRNA based oncology therapeutics, today announced the pricing of its initial public offering of 6,250,000 shares of common stock at a public offering price of $7.00 per share. The shares are expected to begin trading on The NASDAQ Global Market under the ticker symbol "MIRN" on October 1, 2015. In addition, Mirna has granted the underwriters a 30-day option to purchase up to an additional 937,500 shares of common stock at the initial public offering price to cover over-allotments, if any. The offering is expected to close on October 6, 2015 subject to customary closing conditions.

Citigroup and Leerink Partners are acting as joint book-running managers for the proposed offering. Oppenheimer & Co. and Cantor Fitzgerald & Co. are acting as co-managers.

A registration statement relating to these securities was declared effective by the U.S. Securities and Exchange Commission on September 30, 2015. The offering is being made only by means of a prospectus forming part of the effective registration statement. A copy of the final prospectus relating to these securities will be filed with the SEC and may be obtained, when available, from Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, by email at prospectus@citi.com or by phone at (800) 831-9146 or from Leerink Partners LLC, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110, by email at syndicate@leerink.com or by phone at (800) 808-7525.

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

About Mirna Therapeutics, Inc.
Mirna is a clinical-stage biopharmaceutical company developing a broad pipeline of microRNA-based oncology therapeutics and is the first to establish clinical proof-of-concept for a microRNA replacement therapy for cancer. Mirna's lead product candidate, MRX34, a mimic of naturally occurring microRNA-34 (miR-34), is currently being studied in a Phase 1 clinical trial in patients with primary liver cancer, advanced solid tumors and hematological malignancies. miR-34 is one of the most widely published microRNAs and is considered a key regulator of multiple oncogenes across key oncogenic pathways, with the capacity to regulate more than 30 different oncogenes and repress the immune checkpoint signaling molecule PD-L1. The potential capacity to simultaneously affect multiple pathways and processes that are critical to cancer cell viability may make mimics of tumor suppressor microRNAs potent anti-cancer agents and less susceptible to drug resistance. Mirna plans to develop MRX34 as a monotherapy and in combination with other therapeutic modalities, such as targeted therapies and immuno-oncology agents. The company was founded in 2007 and is located in Austin, Texas.

For more information, visit www.mirnarx.com.

Contacts:

Investors
The Trout Group
Josh Barer, 646-378-2948
jbarer@troutgroup.com

Media
BMC Communications
Amy Bonanno, 646-513-3117
abonanno@bmccommunications.com