X0407 4 2023-07-10 0 0000704562 Avid Bioservices, Inc. CDMO 0001976193 Richieri Richard A. 14191 MYFORD ROAD TUSTIN CA 92780 0 1 0 0 Chief Operations Officer 0 Common Stock, $0.001 par value 2023-07-10 4 M 0 4046 A 23079 D Common Stock, $0.001 par value 2023-07-11 4 S 0 1420 13.8592 D 21659 D Common Stock, $0.001 par value 2023-07-10 4 M 0 289 A 6891 I By Spouse Common Stock, $0.001 par value 2023-07-11 4 S 0 122 13.8600 D 6769 I By Spouse Restricted Stock Units 2023-07-10 4 M 0 4046 0.0000 D Common Stock 4046 36403 D Restricted Stock Units 2023-07-10 4 M 0 135 0.0000 D Common Stock 135 3710 I By Spouse Restricted Stock Units 2023-07-10 4 M 0 154 0.0000 D Common Stock 154 3556 I By Spouse Each restricted stock unit ("RSU") represents the contingent right to receive, upon vesting, one share of the Issuer's Common Stock. Represents the shares automatically sold by the reporting person or the reporting person's spouse pursuant to an election to satisfy tax withholding obligations in connection with the vesting of the RSUs described in footnotes 4 and 5. This sale does not represent a discretionary trade. Represents a weighted average sales price per share. These shares were sold at prices ranging from $13.7609 to $13.86. 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. RSUs granted to the reporting person or the reporting person's spouse on July 10, 2020, vest in four (4) equal annual installments beginning July 10, 2021, and each year thereafter until fully-vested, subject to the continuous service to the Issuer on such vesting dates. RSUs granted to the reporting person's spouse on July 10, 2019, vested in four (4) equal annual installments and was fully-vested as of July 10, 2023. /s/ Stephen Hedberg, by Power of Attorney for Richard A. Richieri 2023-07-12