• January 2020: Positive top-line results from second pivotal Phase 3 study, CONSTANT, demonstrated lot-to-lot manufacturing consistency, high seroprotection rates and antibody titers, safety and tolerability.
• Q2 2020: Pre-BLA discussions expected with the FDA.
• Q4 2020: Submission of applications for regulatory approvals in the U.S., Europe, and Canada expected to begin.

• February 2020: Dosing of the 10 patients in the VBI-1901 + GSK's AS01_B adjuvant system study arm began.
• March 2020: Overall survival (OS) data from Part A VBI-1901 + GM-CSF study arm demonstrated 12-month OS rates of 83% (n=5/6) among vaccine responders vs. 33% (n=3/9) for vaccine non-responders, and a 6.25-month improvement in median OS among vaccine responders (14.0 months) vs. non-responders (7.75 months).
• April 2020: Based upon review of safety data from the first three patients enrolled, the independent Data and Safety Monitoring Board (DSMB) unanimously recommended continuation of the Phase 2a VBI-1901 + AS01_B study arm without modification.
• Mid-year 2020: Expanded immunologic, tumor, and clinical data expected from the Phase 2a VBI-1901 + GM-CSF study arm.
• Q4 2020: Initial immunologic and tumor response data expected from the Phase 2a VBI-1901 + AS01_B study arm.

• March 2020: As part of a collaboration with the NRC, preclinical development began on a pan-coronavirus vaccine targeting COVID-19, severe acute respiratory syndrome (SARS), and Middle East respiratory syndrome (MERS).
• Q2 2020: IND-enabling pre-clinical animal models expected to begin.
• Q4 2020: Clinical study materials expected to be available for clinical studies.

• Cash Position: VBI ended the first quarter of 2020 with $35.8 million in cash and cash equivalents compared to $44.2 million as of December 31, 2019. Cash position at March 31, 2020, does not include approximately $54 million of net cash proceeds from the April 2020 underwritten public offering.
• Net Cash Used in Operating Activities: Net cash used in operations for the three months ended March 31, 2020 was $7.6 million compared to $14.0 million for the same period in 2019. This decrease was due to completion of the Sci-B-Vac® Phase 3 clinical studies.
• Cash Used for Purchase of Property and Equipment: Cash used for the purchase of property and equipment was $0.1 million for the three months ended March 31, 2020 compared to $1.9 million for the same period in 2019. The difference is due to capital purchases and replacements related to the modernization and capacity increases of our manufacturing facility in Rehovot, Israel, that occurred in the first quarter of 2019. The modernization and capacity increases were completed in May 2019.
• Revenue: Revenue in the first quarter of 2020 was $0.42 million, compared to $0.36 million for the same period in 2019. This increase was due to an increase in named-patient sales of Sci-B-Vac® in Europe.
• Cost of Revenues: Cost of Revenues was $2.6 million for the first quarter of 2020 compared to $1.2 million in the same period of 2019. The increase is due to re-commencement of manufacturing at the facility in Rehovot and the related costs.
• Research and Development (R&D): R&D expenses were $3.2 million for the first quarter of 2020, compared to $9.0 million for the same period in 2019. The decrease in R&D expenses is the result of the decrease in costs related to the Sci-B-Vac® Phase 3 clinical studies, the first of which (PROTECT) completed in June 2019, the second of which (CONSTANT) completed in January 2020.
• General and Administrative (G&A): G&A expenses were $4.1 million for the first quarter of 2020, compared to $4.0 million for the same period in 2019. This slight increase is due to the increase in pre-commercial activities for Sci-B-Vac®, but is largely offset by the allocation of certain cost of revenues, related to the temporary closure of the Rehovot facility, in the first quarter of 2019 that did not reoccur during the first quarter of 2020.
• Net Loss: Net loss and net loss per share for the first quarter of 2020 were $8.4 million and $0.05, respectively, compared to a net loss of $14.6 million and a net loss per share of $0.15 for the first quarter of 2019.

VBI Vaccines Inc. ((VBIV) is a commercial-stage biopharmaceutical company developing a next generation of vaccines to address unmet needs in infectious disease and immuno-oncology. VBI is advancing the prevention and treatment of hepatitis B, with the only tri-antigenic hepatitis B vaccine, Sci-B-Vac®, which is approved for use and commercially available in Israel, and recently completed its Phase 3 program in the U.S., Europe, and Canada, and with an immunotherapeutic in development for a functional cure for chronic hepatitis B. VBI's enveloped virus-like particle (eVLP) platform technology enables development of eVLPs that closely mimic the target virus to elicit a potent immune response. VBI's lead eVLP programs include a vaccine immunotherapeutic candidate targeting glioblastoma (GBM), a prophylactic cytomegalovirus (CMV) vaccine candidate, and a prophylactic pan-coronavirus vaccine candidate. VBI is headquartered in Cambridge, MA, with research operations in Ottawa, Canada, and research and manufacturing facilities in Rehovot, Israel.

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Certain statements in this press release that are forward-looking and not statements of historical fact are forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and are forward-looking information within the meaning of Canadian securities laws (collectively, "forward-looking statements"). The Company cautions that such statements involve risks and uncertainties that may materially affect the Company's results of operations. Such forward-looking statements are based on the beliefs of management as well as assumptions made by and information currently available to management. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors, including but not limited to, the impact of general economic, industry or political conditions in the United States or internationally; the impact of the recent COVID-19 outbreak on our clinical studies, manufacturing, business plan, and the global economy; the ability to establish that potential products are efficacious or safe in preclinical or clinical trials; the ability to establish or maintain collaborations on the development of therapeutic candidates; the ability to obtain appropriate or necessary governmental approvals to market potential products; the ability to obtain future funding for developmental products and working capital and to obtain such funding on commercially reasonable terms; the Company's ability to manufacture product candidates on a commercial scale or in collaborations with third parties; changes in the size and nature of competitors; the ability to retain key executives and scientists; and the ability to secure and enforce legal rights related to the Company's products. A discussion of these and other factors, including risks and uncertainties with respect to the Company, is set forth in the Company's filings with the SEC and the Canadian securities authorities, including its Annual Report on Form 10-K filed with the SEC on March 5, 2020, and filed with the Canadian security authorities at sedar.com on March 5, 2020, as may be supplemented or amended by the Company's Quarterly Reports on Form 10-Q. Given these risks, uncertainties and factors, you are cautioned not to place undue reliance on such forward-looking statements, which are qualified in their entirety by this cautionary statement. All such forward-looking statements made herein are based on our current expectations and we undertake no duty or obligation to update or revise any forward-looking statements for any reason, except as required by law.