X0407 4 2023-05-22 0001591956 Sphere 3D Corp. ANY 0001888940 Trompeter Patricia C/O SPHERE 3D CORP. 4 GREENWICH OFFICE PARK FIRST FLOOR GREENWICH CT 06831 1 1 0 0 CEO 0 Common Stock 2023-05-22 4 M 0 193550 A 474325 D Common Stock 2023-05-22 4 S 0 41858 0.3318 D 432467 D Common Stock 2023-05-23 4 S 0 29142 0.3355 D 403325 D Restricted Stock Unit (RSU) 2023-05-22 4 M 0 193550 D Common Stock 193550 1024200 D Each RSU represents a contingent right to receive one share of Sphere 3D Corp. common stock. This transaction represents the sale of shares by the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting of the RSUs. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $0.3302 to $0.335, inclusive. This transaction represents the sale of shares by the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting of the RSUs. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $0.3336 to $0.3371, inclusive. The RSUs reported under column 9 represent two awards. The underlying shares and vesting schedules are as follows: (i) 774,200 shares vest on 12/1/2023, and (ii) 125,000 shares vest on 4/8/24 and 125,000 shares vest on 4/8/25. /s/ Denise Garrett For: Patricia Trompeter 2023-05-23