X0609 4 2026-09-02 0001591956 Sphere 3D Corp. ANY 0001409130 Kalbfleisch Kurt L. false C/O SPHERE 3D CORP. 243 TRESSER BLVD., 17TH FLOOR STAMFORD CT 06901 1 1 0 0 Chief Financial Officer 0 Common Stock 2026-09-02 4 M 0 17188 0 A 443003 D Common Stock 215 I By Daughter Common Stock 215 I By Son Restricted Stock Unit (RSU) 0 2026-09-02 4 M 0 17188 0 D Common Stock 17188 43749 D Each RSU represents a contingent right to receive one share of Sphere 3D Corp. common stock. The RSUs reported under Column 5 vested as follows: 7,813 shares on June 30, 2026 and 9,375 shares on September 1, 2026. However, the shares underlying the vested RSUs were not settled and delivered to the Reporting Person until September 2, 2026. The RSUs reported under Column 9 include two awards. The underlying outstanding shares and vesting schedules are as follows: (i) 15,624 outstanding shares of which 7,812 shares vest on September 30, 2026 and December 31, 2026 and (ii) 28,125 outstanding shares of which 9,375 shares vest quarterly from December 1, 2026 until June 1, 2027. By: Denise Garrett For: Kurt Kalbfleisch 2026-09-04