X0202 SCHEDULE 13G 0002140823 XXXXXXXX LIVE Common Shares 06/01/2026 0001591956 Sphere 3D Corp. 84841L506 243 Tresser Blvd, 17th Floor Stamford CT 6901 Rule 13d-1(c) Jialin Qu b X1 5564 470926 5564 470926 476490 6.2 IN For items numbered 9 & 11 above, represents (i) 5,564 Common Shares held by directly Mr. Qu; and (ii) 470,926 Common Shares held by the Togetsu Trust. Mr. Qu is a trustee, and has voting and dispositive control over the Common Shares held by the Togetsu Trust. The beneficiaries of the Togetsu Trust are family members of Mr. Qu. As a result, Mr. Qu does not maintain any pecuniary interest in the shares held by the Togetsu Trust. Percent of class represented is based on 7,639,893 Common Shares outstanding as of June 19, 2026 as provided by Issuer. Togetsu Trust b TN 470926 0 470926 0 470926 6.2 OO Sphere 3D Corp. 243 Tresser Blvd, 17th Floor, Stamford, CONNECTICUT 6901 Jialin Qu Togetsu Trust Jialin Qu 721 5th Avenue, 41E New York, NY, 10022 Togetsu Trust 721 5th Avenue, 41E New York, NY, 10022 Jialin Qu - United States of America Togetsu Trust - Tennessee Y The responses to Items 5-11 of the cover pages of this Schedule 13G are incorporated herein by reference. Jialin Qu acquired the Common Shares reported herein in exchange for his shares of Cathedra Bitcoin Inc. in connection with the previously announced and completed acquisition of Cathedra Bitcoin Inc. by Sphere 3D Corp. Mr. Qu may be deemed to beneficially own an aggregate of 476,490 Common Shares, including (i) 5,564 Common Shares held by directly Mr. Qu; and (ii) 470,926 Common Shares held by the Togetsu Trust. Mr. Qu is a trustee, and has voting and dispositive control over the Common Shares held by the Togetsu Trust. The beneficiaries of the Togetsu Trust are family members of Mr. Qu. As a result, Mr. Qu does not maintain any pecuniary interest in the shares held by the Togetsu Trust. Percent of class represented is based on 7,639,893 Common Shares outstanding as of June 19, 2026 as provided by Issuer. 6.2 5,564.00 470,926.00 5,564.00 470,926.00 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Exhibit 1 - Joint Filing Agreement pursuant to Rule 13d-1(k). Jialin Qu /s/ Jialin Qu 07/20/2026 Togetsu Trust /s/ Jialin Qu 07/20/2026