EXHIBIT 99.1

Vical Reports Fourth Quarter 2015 Financial Results

Futility Analyses Completed on CMV Phase 3 Trial in HCT Patients and Trial Continuing as Planned

Phase 1 Trial Initiated for Novel Antifungal

SAN DIEGO, March 14, 2016 (GLOBE NEWSWIRE) -- Vical Incorporated (Nasdaq:VICL) today reported financial results for the three and twelve months ended December 31, 2015. Net loss for the fourth quarter of 2015 was $2.4 million, or $0.03 per share, compared with a net loss of $4.6 million, or $0.05 per share, for the fourth quarter of 2014. Revenues for the fourth quarter of 2015 were $6.8 million, compared with revenues of $4.8 million for the fourth quarter of 2014, reflecting revenues from IPPOX for the manufacture of HIV vaccine.  This vaccine is expected to be used as a priming component of prime/boost vaccine regimens that will be evaluated in clinical trials for the prevention of HIV infection.

Vical had cash and investments of $42.0 million at December 31, 2015. The Company’s net cash use for the fourth quarter of 2015 was $1.9 million, which reflects its ongoing efforts to manage its operating expenses. The Company's net cash burn for 2015 was $7.1 million which was consistent with the Company’s prior guidance. The Company is projecting net cash burn for 2016 between $8 million and $11 million.

Program updates include:

ASP0113 CMV Vaccine


HSV-2 Vaccine


VL-2397 Antifungal


Vical will conduct a conference call and webcast today, March 14, at noon Eastern Time, to discuss the Company’s financial results and program updates with invited participants. The call and webcast are open on a listen-only basis to any interested parties. To listen to the conference call, dial in approximately ten minutes before the scheduled call to (719) 325-2494 (preferred), or (888) 576-4398 (toll-free), and reference confirmation code 2761479. A replay of the call will be available for 48 hours beginning about two hours after the call. To listen to the replay, dial (719) 457-0820 (preferred) or (888) 203-1112 (toll-free) and enter replay passcode 2761479. The call will also be available live and archived through the events page at www.vical.com. For further information, contact Vical’s Investor Relations department by phone at (858) 646-1127 or by e-mail at ir@vical.com.

About Vical

Vical develops biopharmaceutical products for the prevention and treatment of chronic or life-threatening infectious diseases, based on its patented DNA delivery technologies and other therapeutic approaches. Additional information on Vical is available at www.vical.com.

Forward-Looking Statements

This press release contains forward-looking statements subject to risks and uncertainties that could cause actual results to differ materially from those projected. Forward-looking statements include net cash use guidance, as well as anticipated developments in independent and collaborative programs, including the timing of initiation, enrollment and announcement of data for clinical trials. Risks and uncertainties include whether Vical or others will continue development of ASP0113, Vical’s HSV-2 vaccine, VL-2397 or any other independent or collaborative programs; whether Vical will achieve levels of revenues and control expenses to meet its financial projections; whether enrollment in on-going trials will continue at current rates; whether Vical or its collaboration partners will be able to obtain regulatory allowances or guidance necessary to proceed with proposed clinical trials or implement anticipated clinical trial designs; whether on-going or planned clinical trials will be completed on the timelines Vical currently expects, whether any product candidates will be shown to be safe and efficacious in clinical trials; whether Vical is able to continue its collaborative arrangements or enter into new ones; the timing of clinical trials; whether Vical or its collaborative partners will seek or gain approval to market any product candidates; and additional risks set forth in the Company's filings with the Securities and Exchange Commission. These forward-looking statements represent the Company's judgment as of the date of this release. The Company disclaims, however, any intent or obligation to update these forward-looking statements.

VICAL INCORPORATED
Selected Condensed Financial Information (Unaudited)
            
 Three Months Ended Twelve Months Ended
Statements of OperationsDecember 31, December 31,
(in thousands, except per share amounts)2015 2014 2015 2014
Revenues:           
Contract revenue $   6,478   $   4,231   $   18,860   $   13,304 
License and royalty revenue    335      592      2,090      1,913 
Total revenues    6,813      4,823      20,950      15,217 
Operating expenses:           
Research and development    2,839      3,762      11,061      11,467 
Manufacturing and production    4,301      3,367      10,927      10,824 
General and administrative    2,095      2,376      8,366      9,552 
Total operating expenses    9,235      9,505      30,354      31,843 
Loss from operations     (2,422)     (4,682)     (9,404)     (16,626)
Net investment and other income    67      49      166      134 
Net loss $   (2,355)  $   (4,633)  $   (9,238)  $    (16,492)
Basic and diluted net loss per share $   (0.03)  $   (0.05)  $   (0.10)  $   (0.19)
Weighted average shares used in computing           
basic and diluted net loss per share  92,061   90,631   91,751   88,786
            
            
Balance Sheets      December 31, December 31,
(in thousands)      2015 2014
Assets:           
Cash, cash equivalents, and marketable           
securities, including restricted       $   39,954   $   47,152 
Other current assets          4,544      4,178 
Total current assets          44,498      51,330 
Long-term investments          2,052      1,971 
Property and equipment, net          1,873      2,639 
Other assets          1,491      2,039 
Total assets       $   49,914   $   57,979 
            
Liabilities and stockholders' equity:           
Current liabilities       $   4,162   $   5,201 
Long-term liabilities          359      856 
Stockholders' equity          45,393      51,922 
Total liabilities and stockholders' equity       $   49,914   $   57,979 

Contacts:

Andrew Hopkins
(858) 646-1127
Website:  www.vical.com

Anthony Ramos
Vice President and Chief Accounting Officer