Presentation by CEO Linda Powers To Be Webcast Live

BETHESDA, Md., December 5, 2013 – Northwest Biotherapeutics, Inc. (NASDAQ: NWBO) (“NW Bio”), a biotechnology company developing non-toxic DCVax® personalized immune therapies for solid tumor cancers, announced today that CEO Linda F. Powers will present at the Oppenheimer 24th Annual Healthcare Conference. The Conference will take place on December 10th and 11th at the Crowne Plaza Hotel in New York City.

The Company will present on Tuesday, December 10, 2013, at 1:35 p.m. Investors interested in meeting one-on-one with senior management during the conference should contact their Oppenheimer representative or the Company.

The presentation will be webcast and will be available at Northwest Bio Webcast both live and through March, 2014.

About Northwest Biotherapeutics

Northwest Biotherapeutics is developing cancer vaccines designed to treat a broad range of solid tumor cancers more effectively than current treatments, and without the side effects of chemotherapy drugs. NW Bio’s proprietary manufacturing technology enables the Company to produce its personalized vaccine in an efficient, cost-effective manner. The Company has a broad platform technology for DCVax dendritic cell-based vaccines. The Company’s lead product, DCVax-L, is currently in a 312-patient Phase III trial for patients with newly diagnosed Glioblastoma multiforme (GBM), the most aggressive and lethal brain cancer. The Company’s second product, DCVax-Direct, is currently in a 60-patient Phase I/II trial for direct injection into all types of inoperable solid tumor cancers. The Company has also conducted a Phase I/II trial with DCVax for metastatic ovarian cancer together with the University of Pennsylvania. The Company previously received clearance from the FDA for a 612-patient Phase III trial with its third product, DCVax-Prostate, for late stage prostate cancer.

Disclaimer

Statements made in this news release that are not historical facts, including statements concerning future treatment of patients using DCVax and future clinical trials, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “expect,” “believe,” “intend,” “plan,” “continue,” “may,” “will,” “anticipate,” and similar expressions are intended to identify forward-looking statements. Actual results may differ materially from those projected in any forward-looking statement. Specifically, there are a number of important factors that could cause actual results to differ materially from those anticipated, such as the Company’s ability to raise additional capital, risks related to the Company’s ability to enroll patients in its clinical trials and complete the trials on a timely basis, the uncertainty of the clinical trials process, uncertainties about the timely performance of third parties, and whether the Company’s products will demonstrate safety and efficacy. Additional information on these and other factors, including Risk Factors, which could affect the Company’s results, is included in its Securities and Exchange Commission (“SEC”) filings. Finally, there may be other factors not mentioned above or included in the Company’s SEC filings that may cause actual results to differ materially from those projected in any forward-looking statement. You should not place undue reliance on any forward-looking statements. The Company assumes no obligation to update any forward-looking statements as a result of new information, future events or developments, except as required by securities laws.