Celsion Corporation Reports Second Quarter 2017 Financial Results and Provides Business Update Company to Hold Conference Call on Tuesday

Celsion Corporation Reports Second Quarter 2017 Financial Results and Provides Business Update

Company to Hold Conference Call on Tuesday, August 15, 2017 at 11:00 a.m. ET

LAWRENCEVILLE, N.J., August 15, 2017 -- Celsion Corporation (NASDAQ: CLSN), an oncology drug development company, today announced financial results for the quarter and six month period ended June 30, 2017 and provided an update on its development programs for ThermoDox , its proprietary heat-activated liposomal encapsulation of doxorubicin and GEN-1, an IL-12 DNA plasmid vector encased in a nanoparticle delivery system, which enables cell transfection followed by persistent, local secretion of the IL-12 protein. The Company's lead program is ThermoDox which is currently in Phase III development for the treatment of primary liver cancer. The Company's immunotherapy program consists of GEN-1 and is currently in Phase I development for the localized treatment of ovarian cancer.

"We are extremely pleased with the momentum that we have built and the meaningful developments in our two lead programs," said Michael H. Tardugno, Celsion's chairman, president and CEO. "The data from our immunotherapy program, both the clinical data as well as the recently announced translational data from our OVATION Study in first line ovarian cancer, continue to provide important insights into GEN-1's favorable clinical and safety profile and reinforce our confidence in its potential to serve as an effective therapy in a broad range of cancers."

Mr. Tardugno continued, "We have also made great strides to advance our global Phase III OPTIMA Study evaluating ThermoDox in primary liver cancer, with clinical sites currently enrolling patients in 14 countries worldwide. In addition, we are pleased to report that the independent Data Monitoring Committee recently recommended continuation of the OPTIMA Study after their review of the safety and efficacy data for 275 patients enrolled in the study. Enrollment momentum continues to improve with the addition of new clinical sites in China and Vietnam."

OPTIMA Study Update. On August 7, 2017, the Company announced that the independent Data Monitoring Committee (DMC) for the Company's OPTIMA Study completed a regularly scheduled review of the first 50% of patients enrolled in the trial as of April 2017 and has unanimously recommended that the OPTIMA Study continue according to protocol to its final data readout. The DMC reviewed study data at regular intervals, with the primary responsibilities of ensuring the safety of all patients enrolled in the study, the quality of the data collected, and the continued scientific validity of the study design. As part of its review, the DMC monitored a quality matrix relating to the total clinical data set, confirming the timely collection of data, that all data are current as well as other data collection and quality criteria.

The Company hosted an Investigators Meeting with physicians in SE Asia and key opinion leaders on July 22-23, 2017 in Bangkok, Thailand. A second Investigators Meeting is being planned for October with physicians in China. The Company has initiated approximately 70 clinical sites in 14 countries with plans to activate up to 8 additional clinical trial sites in China or Vietnam by the end of 2017. China and Vietnam represent significant markets for ThermoDox where HCC incidence rates are among the highest in the world.

In addition, the Company announced that patient enrollment in the 550 patient Phase III global study has reached over 60%. Based on current enrollment rates, the Company expects to complete enrollment of the OPTIMA Study by mid - 2018.

Announced Latest Translational Data from the OVATION Study Showing That Patients in All Cohorts Showed Convincing Evidence of IL-12 Gene Transfer and Immune System Activity. On August 2, 2017, the Company reported that translational research data from its Phase Ib dose escalating clinical trial was reviewed with leading immuno-oncology experts from the Roswell Park Cancer Institute. The data showed evidence of IL-12 gene transfer by dose dependent increases in IL-12 levels and immune system activity and significant increases in interferon-gamma (IFN- ) and decreases in VEGF levels. The treatment-related changes in immune activating cytokines and pro-tumor VEGF levels followed a dose-dependent trend and were predominantly in the peritoneal fluid compartment with little to no changes observed in the patients' systemic blood stream.

Key translational research findings from the first 12 of 15 patients enrolled in four patient cohorts are summarized below:

Presented OVATION Study Findings in Newly Diagnosed Advanced Ovarian Cancer Patients at the ASCO 2017 Annual Meeting. In June 2017, the Company reported clinical data from the first fourteen patients who have completed treatment in the OVATION Study. GEN-1 plus standard chemotherapy produced positive results, with no dose limiting toxicities and promising dose dependent efficacy signals which appear to correlate well with successful surgical outcomes as summarized below:

Corporate Development

Raised $10.1 Million through Warrant Exercises and Registered Direct Offering. During the second quarter of 2017, the Company raised $5.1 million through the exercise of outstanding common stock warrants. In July 2017, the Company completed a $5 million registered direct equity offering of shares of common stock, or pre-funded warrants in lieu thereof, and a concurrent private placement of warrants to purchase common stock with several institutional healthcare investors.

For the quarter ended June 30, 2017, Celsion reported a net loss of $4.9 million, or $(0.79) per share, compared to a net loss of $4.5 million, or $(2.63) per share, in the same period of 2016. Operating expenses were $4.7 million in the second quarter of 2017 compared to $4.9 million in the same period of 2016. This decrease was primarily due to a tighter clinical development focus coupled with lower general and administrative and interest expenses. For the six month period ended June 30, 2017, the Company reported a net loss of $10.1 million, or $(1.75) per share, compared to $10.2 million, or $(6.04) per share, in the same six month period of 2016. Operating expenses were $9.6 million in the first half of 2017 compared to $10.2 million in the same period of 2016. Net cash used in operations was $7.3 million in the first half of 2017 compared to $9.0 million in the same period last year. The Company ended the second quarter of 2017 with $3.6 million of total cash and investments, which was subsequently increased with proceeds from a $5 million registered direct offering completed in early July 2017.

Research and development costs were $3.0 million in the second quarter of 2017 compared to $3.3 million in the same period last year. Research and development costs were $6.5 million in the first half of 2017 compared to $6.8 million in the same period last year. Clinical development costs for the Phase III OPTIMA Study remained relatively unchanged at $1.5 million in each of the second quarter of 2017 and 2016. R&D costs for other development programs were lower as a result of the Company's tighter clinical development focus around the pivotal Phase III OPTIMA Study for the treatment of primary liver cancer and the clinical development program for GEN-1 IL-12 immunotherapy for the localized treatment of ovarian cancer coupled with lower costs in the first half of 2017 associated with the production of ThermoDox clinical supplies to support the OPTIMA Study.

General and administrative expenses were $1.6 million in the second quarter of 2017 compared to $1.5 million in the same period of 2016. The increase during the second quarter of 2017 was due to higher non-cash stock compensation expense partially offset by reduced professional fees. General and administrative expenses were $3.1 million in the first half of 2017 compared to $3.4 million in the same period of 2016. The decrease during the first six months of 2017 was primarily the result of lower personnel costs and professional fees.

During the three and six months ended June 30, 2017, the Company recognized deemed dividends totaling $0.4 million collectively in regard to multiple agreements with certain warrant holders, pursuant to which these warrant holders agreed to exercise, and the Company agreed to reprice, certain warrants. Warrants to purchase 790,410 shares of common stock were repriced at $2.70 and warrants to purchase 506,627 shares of common stock were repriced at $1.65. The Company received $3.0 million in gross proceeds from the sale of these repriced warrants.

Quarterly Conference Call

The Company is hosting a conference call to provide a business update and discuss second quarter 2017 financial results at 11:00 a.m. ET on Tuesday, August 15, 2017. To participate in the call, interested parties may dial 1-888-576-4382 (Toll-Free/North America) or 1-719-325-2460 (International/Toll) and ask for the Celsion Corporation Second Quarter 2017 Earnings Call (Conference Code: 7987329) to register ten minutes before the call is scheduled to begin. The call will also be broadcast live on the internet at www.celsion.com.

The call will be archived for replay on Tuesday, August 15, 2017 and will remain available until August 29, 2017. The replay can be accessed at 1-888-203-1112 (Toll-Free/North America) or 1-719-457-0820 (International/Toll) using Conference ID: 7987329. An audio replay of the call will also be available on the Company's website, www.celsion.com, for 90 days after 2:00 p.m. ET Tuesday, August 15, 2017.

About Celsion Corporation

Celsion is a fully-integrated oncology company focused on developing a portfolio of innovative cancer treatments, including directed chemotherapies, immunotherapies and RNA- or DNA-based therapies. The Company's lead program is ThermoDox , a proprietary heat-activated liposomal encapsulation of doxorubicin, currently in Phase III development for the treatment of primary liver cancer and in Phase II development for the treatment of recurrent chest wall breast cancer. The pipeline also includes GEN-1, a DNA-based immunotherapy for the localized treatment of ovarian and brain cancers. Celsion has two platform technologies for the development of novel nucleic acid-based immunotherapies and other anti-cancer DNA or RNA therapies. For more information on Celsion, visit our website: http://www.celsion.com (CLSN-FIN).

Celsion wishes to inform readers that forward-looking statements in this release are made pursuant to the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Readers are cautioned that such forward-looking statements involve risks and uncertainties including, without limitation, unforeseen changes in the course of research and development activities and in clinical trials; the uncertainties of and difficulties in analyzing interim clinical data; the significant expense, time, and risk of failure of conducting clinical trials; the need for Celsion to evaluate its future development plans; possible acquisitions or licenses of other technologies, assets or businesses; possible actions by customers, suppliers, competitors, regulatory authorities; and other risks detailed from time to time in Celsion's periodic reports and prospectuses filed with the Securities and Exchange Commission. Celsion assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events, new information or otherwise.

Celsion Investor Contact

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