X0508 4 2024-06-12 0001591956 Sphere 3D Corp. ANY 0001888940 Trompeter Patricia C/O SPHERE 3D CORP. 243 TRESSER BLVD. 17TH FLOOR STAMFORD CT 06901 1 1 0 0 CEO 0 Common Stock 2024-06-12 4 S 0 120000 1.198 D 429687 D This transaction represents the sale of shares by the reporting person to satisfy the issuer's tax withholding obligations in connection with the release of vested RSUs on June 7, 2024. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices within the range of $1.17 to $1.265, inclusive. /s/ Denise Garrett, as Attorney-in-Fact for Patricia Trompeter 2024-06-12