X0508 4 2025-09-03 0001591956 Sphere 3D Corp. ANY 0001409130 Kalbfleisch Kurt L. C/O SPHERE 3D CORP. 243 TRESSER BLVD., 17TH FLOOR STAMFORD CT 06901 0 1 0 0 Acting CEO and CFO 0 Common Stock 2025-09-03 4 M 0 195201 A 550380 D Common Stock 2025-09-03 4 F 0 85010 0.6069 D 465370 D Common Stock 2142 I By Daughter Common Stock 2142 I By Son Restricted Stock Unit (RSU) 2025-09-03 4 M 0 195201 D Common Stock 195201 1160155 D Each RSU represents a contingent right to receive one share of Sphere 3D Corp. common stock. 11,607 RSUs vested on June 20, 2025, 89,844 RSUs vested on June 30, 2025 and 93,750 RSUs vested on September 1, 2025. The RSUs reported under Column 9 include three awards. The underlying shares and vesting schedules are as follows: (i) 78,125 shares vest each quarter beginning 9/30/2025 until 12/31/2026; (ii) 11,719 shares vest each quarter beginning 9/30/2025 until 12/31/2025 and 11,717 shares vest on 3/31/2026; and (iii) 93,750 shares vest each quarter from 12/1/2025 until 6/1/2027. By: Denise Garrett For: Kurt Kalbfleisch 2025-09-05