X0407 4 2023-04-11 0 0000704562 Avid Bioservices, Inc. CDMO 0001227835 SARGEN GREGORY 14191 MYFORD ROAD TUSTIN CA 92780 1 0 0 0 0 Common Stock, $0.001 par value 2023-04-11 4 S 0 7011 20.2423 D 0 D Represents a weighted average sales price per share. These shares were sold at prices ranging from $20.09 to $20.33. The Reporting Person has provided to the Issuer, and hereby undertakes to provide the SEC staff or a security holder of the Issuer, upon request, information regarding the number of shares sold at each respective price within the range set forth in this footnote. /s/ Stephen Hedberg, by Power of Attorney for Gregory P. Sargen 2023-04-12