Onconova Therapeutics Announces Closing of $28.75 Million Upsized Underwritten Public Offering

Underwriter’s Option to Purchase Additional Securities Exercised in Full

NEWTOWN, Pa., May 01, 2018 (GLOBE NEWSWIRE) -- Onconova Therapeutics, Inc. (NASDAQ:ONTX) (“Onconova” or “we”), a Phase 3 stage biopharmaceutical company focused on discovering and developing small molecule drug candidates to treat cancer, with a primary focus on Myelodysplastic Syndromes, today announced the closing of its previously announced underwritten public offering (the “Offering”) of 67,647,058 shares of its common stock (“Common Stock”) (or Common Stock equivalent) and warrants to purchase an aggregate of 1,691,176.450 shares of Onconova’s Series B convertible preferred stock (“Preferred Stock Warrants”), including 8,823,529 shares of Common Stock and Preferred Stock Warrants to purchase 220,588.225 shares of Series B convertible preferred stock issued pursuant to the underwriter’s full exercise of its option to purchase additional securities, at the public offering price of $0.425 per share and accompanying Preferred Stock Warrant.

H.C. Wainwright & Co. acted as the sole book-running manager for the Offering.

The gross proceeds of the Offering were approximately $28.75 million and, after deducting underwriting discounts and commissions and offering expenses, the net proceeds of the Offering were approximately $25.6 million. In addition, in the event the Preferred Stock Warrants are exercised in full, Onconova expects to receive approximately $28.75 million in additional proceeds. However, there is no assurance that all or a portion of the Preferred Stock Warrants will be exercised prior to their expiration.

The Preferred Stock Warrants are exercisable immediately at an exercise price of $0.425 per 0.025 share of Series B Preferred Stock (convertible into one share of Common Stock) and will expire on the 18-month anniversary of the date on which Onconova publicly announces through the filing of a Current Report on Form 8-K that an amendment to its certificate of incorporation to increase its authorized shares of Common Stock has been filed with the Secretary of State of the State of Delaware. The shares of Common Stock (or Common Stock equivalents) and the accompanying Preferred Stock Warrants were purchased together in this Offering but were issued separately.

Onconova intends to use the net proceeds from this Offering to fund the development of its clinical and preclinical programs, for other research and development activities and for general corporate purposes, which may include capital expenditures and funding working capital needs.

A registration statement on Form S-1 (File No. 333-224315) relating to these securities was declared effective by the U.S. Securities and Exchange Commission (“SEC”) on April 26, 2018. This Offering was made only by means of a prospectus forming part of the effective registration statement. A final prospectus relating to and describing the terms of the Offering has been filed with the SEC. Copies of the final prospectus relating to the Offering may be obtained for free by visiting the SEC’s website at www.sec.gov or by contacting H.C. Wainwright & Co., LLC, 430 Park Avenue, 3rd Floor, New York, New York 10022, by email at placements@hcwco.com or by telephone at 646-975-6996.

This press release shall not constitute an offer to sell or a 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 Onconova Therapeutics, Inc.

Onconova Therapeutics, Inc. is a Phase 3-stage biopharmaceutical company focused on discovering and developing novel small molecule drug candidates to treat cancer, with a primary focus on Myelodysplastic Syndromes (“MDS”). Rigosertib, Onconova’s lead candidate, is a proprietary Phase 3 small molecule agent, which Onconova believes blocks cellular signaling by targeting RAS effector pathways. Using a proprietary chemistry platform, Onconova has created a pipeline of targeted agents designed to work against specific cellular pathways that are important in cancer cells. Onconova has three product candidates in the clinical stage and several pre-clinical programs. Advanced clinical trials with Onconova’s lead compound, rigosertib, are aimed at what Onconova believes are unmet medical needs of patients with MDS. For more information, please visit http://www.onconova.com.

Forward-Looking Statements

Some of the statements in this release are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995, which involve risks and uncertainties. These statements relate to future events and include, without limitation, Onconova’s expectations regarding the amount and use of proceeds of the Offering and the exercise of the Preferred Stock Warrants. Although Onconova believes that the expectations reflected in such forward-looking statements are reasonable as of the date made, expectations may prove to have been materially different from the results expressed or implied by such forward-looking statements. Onconova has attempted to identify forward-looking statements by terminology including “believes,” “estimates,” “anticipates,” “expects,” “plans,” “intends,” “may,” “could,” “might,” “will,” “should,” “approximately” or other words that convey uncertainty of future events or outcomes. These statements are only predictions and involve known and unknown risks, uncertainties, and other factors, including Onconova’s need for additional financing and current plans and future needs to scale back operations if adequate financing is not obtained, the success and timing of Onconova’s clinical trials and regulatory approval of protocols, market conditions and those discussed under the heading “Risk Factors” in Onconova’s registration statement on Form S-1, as amended (File No. 333-224315) and its most recent Annual Report on Form 10-K.

Any forward-looking statements contained in this release speak only as of its date. Onconova undertakes no obligation to update any forward-looking statements contained in this release to reflect events or circumstances occurring after its date or to reflect the occurrence of unanticipated events.

GENERAL CONTACT:

http://www.onconova.com/contact/

INVESTOR RELATIONS CONTACT:

Katja Buhrer, Affinity Growth Advisors on behalf of Onconova Therapeutics
katja.buhrer@affinitygrowth.com / (212) 661-7004