| 
			 
			For more information please contact:   Investment Banking 
			
			James Antonopoulos 
			Managing Director Co-Head of Healthcare Investment Banking 
			(646) 358-1906 
			
			jantonopoulos@roth.com
				    
				
			Eric B. Cheng 
			Managing Director Co-Head of Healthcare Investment Banking 
			(646) 358-1901 
			
			echeng@roth.com
			   
			
			
			Aparna Beeram 
			Vice President 
			(646) 358-1912 
			
			abeeram@roth.com   
			Equity Capital Markets 
			
			Aaron Gurewitz 
			Head of Equity 
			Capital Markets 
			(949) 720-5703 
			
			agurewitz@roth.com 
			  
			
			Nazan Akdeniz 
			Senior Vice President 
			(949) 720-5740 
			
			nakdeniz@roth.com 
			  
			
			Lou Ellis 
			Senior Vice President 
			(949) 720-5739 
			
			lellis@roth.com  | 
			
			 
			Transaction Information 
						Altimmune, Inc. (Nasdaq: ALT), a clinical-stage biopharmaceutical company, has closed an underwritten public offering of 4,119,564 shares of its common stock, which includes 750,000 additional shares pursuant to the full exercise of the over-allotment option granted to the underwriters, and to certain investors in lieu thereof, pre-funded warrants to purchase 1,630,436 shares of its common stock at an exercise price of $0.0001 per share.
				
  
The public offering price of each share of common stock was $23.00 and the public offering price of each pre-funded warrant was $22.999 per underlying share, resulting in the gross proceeds for Altimmune, Inc. of approximately $132.3 million.
	
  
Altimmune anticipates using the proceeds from the offering for general corporate purposes, which may include, but are not limited to, scale up of manufacturing and advanced clinical trials of AdCOVID, a single dose intranasal COVID-19 vaccine candidate; the continued development of ALT-801, its dual GLP-1/glucagon receptor agonist for the treatment of non-alcoholic steatohepatitis (NASH), including manufacturing and clinical trials; and for capital expenditures and working capital.
	
  
ROTH Capital Partners acted as co-manager for the offering.
  
About Altimmune 
				Altimmune is a clinical stage biopharmaceutical company focused on developing treatments for liver disease, immune modulating therapies and intranasal vaccines. Altimmune’s diverse pipeline of product candidates includes next generation peptide therapeutics for NASH (ALT-801) and chronic hepatitis B (HepTcell™), an intranasal immune modulating treatment for COVID-19 (T-COVID™) and intranasal vaccines (AdCOVID™, NasoShield™ and NasoVAX™).   For more information, please visit 
			https://altimmune.com. 
			(Source: Company Press Release | 07.14.20)
			
  About ROTH Capital Partners 
			ROTH Capital Partners, LLC (ROTH), is a relationship-driven investment bank focused on serving emerging growth companies and 
			their investors. As a full-service investment bank, ROTH provides capital raising, M&A advisory, analytical research, trading, 
			market-making services and corporate access. Headquartered in Newport Beach, CA, ROTH is privately-held and employee owned, and 
			maintains offices throughout the U.S. For more information on ROTH, please visit 
			www.roth.com.  | 
		
		
			| 
			 
			Date of Announcement: 07.22.20 
			The material, information and  facts discussed in this announcement other than the information regarding ROTH Capital Partners, LLC 
			("ROTH") and its affiliates, are from sources believed to be reliable, but are in no way guaranteed to be complete or accurate. This announcement should not be used as a complete analysis of any 
			companies, securities or topics discussed herein. Additional information is available upon request. This is not, however, an 	offer or solicitation of the securities discussed. Any opinions or 
			estimates in this announcement are subject to change without notice. An investment in any security based on this announcement may involve risks and uncertainties that could cause actual results to differ 
			materially from the forward-looking statements. Additionally, such investments may involve a high degree of risk and may not be suitable for all investors. No part of this announcement may be 
			reproduced in any form without the express written permission of ROTH. Copyright 2020.  |