Exhibit 99.1

Vaxart Provides Business Update and Reports Third Quarter 2023 Financial Results

Norovirus challenge study topline results indicate the potential of Vaxart's oral pill vaccine candidate to reduce rates of norovirus infection, norovirus acute gastroenteritis and viral shedding

Clinical proof of concept for the Company's oral pill vaccine platform now established in two human challenge studies for norovirus and influenza

Conference call today at 4:30 p.m. ET

SOUTH SAN FRANCISCO, Calif., November 2, 2023 — Vaxart, Inc. (Nasdaq: VXRT) today announced its business update and financial results for the third quarter of 2023.

“During the third quarter, we took important steps toward validating our mucosal vaccine platform with the release of topline data from two Phase 2 trials of our norovirus program,” said Andrei Floroiu, Vaxart’s Chief Executive Officer. “Data from our Phase 2 challenge study indicated that our monovalent norovirus candidate has the potential to reduce norovirus infection, norovirus acute gastroenteritis, and viral shedding and also stimulates norovirus-specific antibody responses and neutralizing antibodies.

“With the rise in norovirus infections this year, we believe the totality of our norovirus vaccine data highlights the potential to address this need and the significant disease burden that norovirus causes,” Floroiu added. “We are currently conducting additional analyses of our norovirus data with the objectives of defining the timing of a larger Phase 2b study and identifying ways to reduce the size and duration of a subsequent Phase 3 registration study.”

Recent Business Highlights

Norovirus Vaccine Developments

● In October 2023, Vaxart dosed the first subject in its Phase 1 clinical trial evaluating the Company’s oral pill norovirus vaccine candidate focused on lactating mothers. The study is designed to investigate immunity in the breastmilk of nursing mothers who have received vaccine.

● In October 2023, Vaxart senior management presented at the World Vaccine Congress Europe 2023 in Barcelona, Spain.

o Dr. Sean Tucker, Vaxart’s Founder and Chief Scientific Officer, presented on transmission-blocking strategies via oral pill vaccination and mucosal immune induction.

o Dr. James F. Cummings, Vaxart’s Chief Medical Officer, discussed protection against norovirus infection from an oral pill vaccine candidate in humans.

● In September 2023, Vaxart announced topline data from the Phase 2 challenge study of its monovalent norovirus oral pill vaccine candidate.

o The study met five of six primary endpoints.

o The results showed a statistically significant 29% relative reduction in the rate of norovirus infection, a 21% relative reduction in the rate of norovirus acute gastroenteritis that was not statistically significant, and an 85% relative reduction in viral shedding. The latter was a prespecified study endpoint in the vaccinated cohort compared with placebo.

o Vaxart believes this reduction in shedding could potentially have an impact on transmission and have important public health benefits.

● In July 2023, Vaxart reported preliminary positive topline data from the dose-ranging Phase 2 clinical trial of its oral pill bivalent norovirus vaccine candidate.

● Vaxart now has demonstrated robust immunogenicity data in eight clinical trials including both young adults and elderly populations.

● The Company’s norovirus oral vaccine candidate has shown an attractive safety profile in trials and has been well tolerated with no vaccine-related serious adverse events.

COVID-19 Vaccine Developments

● Vaxart continues to progress its COVID-19 vaccine program and believes the cross-reactivity of the current constructs suggests a pathway for developing a pan-betacoronavirus vaccine. The Company is assessing next steps.

Financial Results for the Three Months Ended September 30, 2023

● Vaxart ended the third quarter of 2023 with cash, cash equivalents, restricted cash and marketable securities of $53.0 million, compared to $67.9 million as of June 30, 2023. The Company continues to anticipate it has cash runway into the third quarter of 2024.

● Vaxart reported a net loss of $17.4 million for the third quarter of 2023, compared to $29.3 million for the third quarter of 2022. Net loss per share for the third quarter of 2023 was $0.11 per share, compared to a net loss of $0.23 per share in the third quarter of 2022.

● Revenue for the third quarter of 2023 was $2.1 million, compared to no revenue in the third quarter of 2022. Revenue in the third quarter of 2023 was primarily from revenue recognized for work performed under Vaxart’s grant from the Bill & Melinda Gates Foundation and non-cash royalty revenue from increased sales of Inavir in Japan.

● Research and development expenses were $15.0 million for the third quarter of 2023, compared to $22.5 million for the third quarter of 2022. The decrease is primarily due to decreases in manufacturing costs, personnel related costs and clinical trial expenses related to our COVID-19 vaccine candidates, partially offset by increased depreciation expense.

● General and administrative expenses were $4.9 million for the third quarter of 2023, compared to $7.0 million for the third quarter of 2022. The decrease is primarily due to a decrease in legal and professional fees, directors' and officers' insurance and personnel related costs, partially offset by an increase in personnel stock-based costs.

Conference Call

The Vaxart senior management team will host a conference call to discuss the business update and financial results for the third quarter of 2023 today, beginning at 4:30 p.m. ET.

The conference call can be accessed using the following information:

Webcast: Click here

Date: Thursday, November 2, 2023 – 4:30 p.m. ET

Domestic: 877-407-0832

International: 201-689-8433

Conference ID: 13741880

Investors may submit written questions in advance of the conference call to ir@vaxart.com.

A replay of the webcast will be available for 30 days on Vaxart’s website at www.vaxart.com following the conclusion of the event.

About Vaxart

Vaxart is a clinical-stage biotechnology company developing a range of oral recombinant vaccines based on its proprietary delivery platform. Vaxart vaccines are designed to be administered using pills that can be stored and shipped without refrigeration and eliminate the risk of needle-stick injury. Vaxart believes that its proprietary pill vaccine delivery platform is suitable to deliver recombinant vaccines, positioning the company to develop oral versions of currently marketed vaccines and to design recombinant vaccines for new indications. Vaxart’s development programs currently include pill vaccines designed to protect against norovirus, coronavirus, and seasonal influenza, as well as a therapeutic vaccine for human papillomavirus (HPV), Vaxart’s first immune-oncology indication. Vaxart has filed broad domestic and international patent applications covering its proprietary technology and constructs for oral vaccination using adenovirus and TLR3 agonists.

Note Regarding Forward-Looking Statements

This press release contains forward-looking statements that involve substantial risks and uncertainties. All statements, other than statements of historical facts, included in this press release regarding Vaxart's strategy, prospects, plans and objectives, results from preclinical and clinical trials, commercialization agreements and licenses, and beliefs and expectations of management are forward-looking statements. These forward-looking statements may be accompanied by such words as "should," "believe," "could," "potential," "will," "expected," “anticipate,” "plan," and other words and terms of similar meaning. Examples of such statements include, but are not limited to, statements relating to Vaxart's ability to develop and commercialize its product candidates, including its vaccine booster products; Vaxart's expectations regarding clinical results and trial data; and Vaxart's expectations with respect to the effectiveness of its product candidates. Vaxart may not actually achieve the plans, carry out the intentions, or meet the expectations or projections disclosed in the forward-looking statements, and you should not place undue reliance on these forward-looking statements. Actual results or events could differ materially from the plans, intentions, expectations, and projections disclosed in the forward-looking statements. Various important factors could cause actual results or events to differ materially from the forward-looking statements that Vaxart makes, including uncertainties inherent in research and development, including the ability to meet anticipated clinical endpoints, commencement, and/or completion dates for clinical trials, regulatory submission dates, regulatory approval dates, and/or launch dates, as well as the possibility of unfavorable new clinical data and further analyses of existing clinical data; the risk that clinical trial data are subject to differing interpretations and assessments by regulatory authorities; whether regulatory authorities will be satisfied with the design of and results from the clinical studies; decisions by regulatory authorities impacting labeling, manufacturing processes, and safety that could affect the availability or commercial potential of any product candidate, including the possibility that Vaxart's product candidates may not be approved by the FDA or non-U.S. regulatory authorities; that, even if approved by the FDA or non-U.S. regulatory authorities, Vaxart's product candidates may not achieve broad market acceptance; that a Vaxart collaborator may not attain development and commercial milestones; that Vaxart or its partners may experience manufacturing issues and delays due to events within, or outside of, Vaxart's or its partners' control; difficulties in production, particularly in scaling up initial production, including difficulties with production costs and yields, quality control, including stability of the product candidate and quality assurance testing, shortages of qualified personnel or key raw materials, and compliance with strictly enforced federal, state, and foreign regulations; that Vaxart may not be able to obtain, maintain, and enforce necessary patent and other intellectual property protection; that Vaxart's capital resources may be inadequate; Vaxart's ability to resolve pending legal matters; Vaxart's ability to obtain sufficient capital to fund its operations on terms acceptable to Vaxart, if at all; the impact of government healthcare proposals and policies; competitive factors; and other risks described in the "Risk Factors" sections of Vaxart's Quarterly and Annual Reports filed with the SEC. Vaxart does not assume any obligation to update any forward-looking statements, except as required by law.

     

Contacts                

    

Vaxart Media Relations:	Investor Relations:
Mark Herr	Andrew Blazier
Vaxart, Inc.	Finn Partners
mherr@vaxart.com	IR@Vaxart.com
(203) 517-8957	(646) 871-8486

Vaxart, Inc.

Condensed Consolidated Balance Sheets

	September 30,		December 31,
	2023			2022
	(Unaudited)			(1)
	(in thousands)
Assets
Cash, cash equivalents and restricted cash (2)	$	33,238	$	46,013
Investments in marketable debt securities		19,799		49,704
Accounts receivable		424		20
Prepaid expenses and other assets		4,522		7,282
Property and equipment, net		12,926		15,585
Right-of-use assets, net		25,753		25,715
Intangible assets, net		4,472		5,020
Goodwill		4,508		4,508
Total assets	$	105,642		153,847
Liabilities and stockholders’ equity
Accounts payable	$	1,339	$	5,514
Deferred grant revenue		79		2,000
Accrued and other liabilities		6,269		8,315
Operating lease liability		20,459		21,705
Liability related to sale of future royalties		5,975		5,716
Total liabilities		34,121		43,250
Stockholders’ equity		71,521		110,597
Total liabilities and stockholders’ equity	$	105,642	$	153,847

(1)	Derived from the audited consolidated financial statements of Vaxart, Inc. for the year ended December 31, 2022, included on the Form 10-K filed with the Securities and Exchange Commission on March 15, 2023.
(2)	Cash, cash equivalents and restricted cash includes $79,000 and $2.0 million of restricted cash as of September 30, 2023 and December 31, 2022, respectively.

Vaxart, Inc.

Condensed Consolidated Statements of Operations

(Unaudited)

	3 Months Ended September 30,						9 Months Ended September 30,
	2023			2022			2023			2022
	(in thousands, except share and per share amounts)
Revenue	$	2,101		$	—		$	4,134		$	85
Operating expenses:
Research and development		15,002			22,466			53,437			60,595
General and administrative		4,921			6,960			17,144			22,939
Total operating expenses		19,923			29,426			70,581			83,534
Loss from operations		(17,822	)		(29,426	)		(66,447	)		(83,449	)
Other income (expense), net		461			133			1,444			(340	)
Loss before income taxes		(17,361	)		(29,293	)		(65,003	)		(83,789	)
Provision for income taxes		39			16			87			51
Net loss	$	(17,400	)	$	(29,309	)	$	(65,090	)	$	(83,840	)
Net loss per share, basic and diluted	$	(0.11	)	$	(0.23	)	$	(0.45	)	$	(0.66	)
Shares used in computing net loss per share, basic and diluted		152,026,112			126,889,718			145,810,175			126,374,424