Stronger Balance Sheet Further Supports Late-Stage Pipeline Development

NEW YORK-- Actinium Pharmaceuticals, Inc. (NYSE MKT:ATNM) ("Actinium" or "the Company"), a biopharmaceutical company developing innovative targeted payload immunotherapeutics for the treatment of advanced cancers, today announced that the underwriters of the previously announced offering of 1,670,000 common shares of Actinium exercised their over-allotment option to purchase an additional 157,123 shares from the Company for $7.50 per share. The public offering previously closed on June 30, 2014.

Including the exercise of the over-allotment option of $1.2 million, gross, Actinium’s offering totaled 1,827,123 shares, representing gross proceeds of approximately $13.7 million and a net amount of approximately $12.6 million after deducting the underwriting discount and the other offering expenses.

“The over-allotment helps to advance both Iomab™-B into the planned Phase 3 trial and Actimab-A in the current Phase 1/2 trial. We believe interim data for Actimab-A, which is expected in December as well as other key milestones over the next twelve months, will create long-term value for our shareholders,” said Kaushik J. Dave, Ph.D, President and CEO of Actinium.

Canaccord Genuity Inc. acted as sole book-running manager for the proposed offering, Laidlaw & Company (UK) Ltd. acted as lead manager and MLV & Co. acted as co-manager.

The offering was made pursuant to a shelf registration statement (File No. 333-194768) previously filed with and declared effective by the U.S. Securities and Exchange Commission (SEC). This press release does not constitute an offer to sell, or a solicitation of an offer to buy, any of the securities, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. This offering was made only by means of a prospectus supplement and accompanying base prospectus.

About Actinium Pharmaceuticals

Actinium Pharmaceuticals, Inc. (www.actiniumpharma.com) is a New York-based biopharmaceutical company developing innovative targeted payload immunotherapeutics for the treatment of advanced cancers. Actinium's targeted radiotherapy is based on its proprietary delivery platform for the therapeutic utilization of alpha-emitting actinium-225 and bismuth-213 and certain beta emitting radiopharmaceuticals in conjunction with monoclonal antibodies. The Company’s lead radiopharmaceutical Iomab™-B will be used in preparing patients for hematopoietic stem cell transplant, commonly referred to as bone marrow transplant. The Company is preparing a single, pivotal, multicenter Phase 3 clinical study of Iomab™-B in refractory and relapsed Acute Myeloid Leukemia (AML) patients over the age of 55 with a primary endpoint of durable complete remission. The Company’s second program, Actimab-A, is continuing its clinical development in a Phase 1/2 trial for newly diagnosed AML patients over the age of 60 in a single-arm multicenter trial.

Forward-Looking Statement for Actinium Pharmaceuticals, Inc.

This news release contains “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. These statements are based on management's current expectations and involve risks and uncertainties, which may cause actual results to differ materially from those set forth in the statements. The forward-looking statements may include statements regarding product development, product potential, or financial performance. No forward-looking statement can be guaranteed and actual results may differ materially from those projected. Actinium Pharmaceuticals undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise.

Actinium Pharmaceuticals, Inc.
Evan Smith, +1 646-840-5442
CFA, VP Investor Relations and Finance
esmith@actiniumpharma.com

Source: Actinium Pharmaceuticals, Inc.

Released July 10, 2014