# EDGAR Filing Document

**Accession Number:** 0002134416
**File Stem:** 0001185185-26-002270
**Filing Date:** 2026-6
**Character Count:** 5613
**Document Hash:** 68c9c7fddaea3009ff0e5067253c129d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001185185-26-002270.hdr.sgml**: 20260601

**ACCESSION NUMBER**: 0001185185-26-002270

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260601

**FILED AS OF DATE**: 20260601

**DATE AS OF CHANGE**: 20260601

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Block Joel M
- **CENTRAL INDEX KEY:** 0002134416

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36532
- **FILM NUMBER:** 261050849

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** CATHEDRA BITCOIN INC.
- **STREET 2:** 422 RICHARDS STREET, UNIT 170
- **CITY:** VANCOUVER
- **PROVINCE COUNTRY:** A1
- **ZIP:** V6B 2Z4
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sphere 3D Corp.
- **CENTRAL INDEX KEY:** 0001591956
- **STANDARD INDUSTRIAL CLASSIFICATION:** FINANCE SERVICES [6199]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 981220792
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 243 TRESSER BLVD, 17TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 416-749-5999

**MAIL ADDRESS:**
- **STREET 1:** 243 TRESSER BLVD, 17TH FLOOR
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Sphere 3D Corp
- **DATE OF NAME CHANGE:** 20131114

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Block Joel M<br><sub>(Last) (First) (Middle)</sub><br>243 TRESSER BLVD., 17TH FLOOR<br><sub>(Street)</sub><br>STAMFORD, CT 06901<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Sphere 3D Corp. [ ANY ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-06-01 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_Chief Executive Officer_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |
| Common Shares | 362810<sup>(1)(2)</sup> | D |  |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) Represents 184,737 common shares of the Issuer and 178,073 restricted share units ("RSUs") to acquire common shares of the Issuer received by the reporting person in exchange for subordinate voting shares and RSUs of Cathedra Bitcoin, Inc. ("Cathedra") pursuant to the terms of the Arrangement Agreement, dated March 5, 2026, between the Issuer and Cathedra, in connection with the closing of the Arrangement between the Issuer and Cathedra on June 1, 2026.

(2) The RSUs will vest in three equal annual installments on September 25, 2026, September 25, 2027 and September 25, 2028, subject to full acceleration upon the occurrence of a Vesting Event. A "Vesting Event" means: (i) a Change in Control Vesting Event (as defined in the reporting person's RSU Award Agreement), (ii) a material alteration of the capital structure of the Issuer, which, in the opinion of the Issuer, is of such a nature that it is not practical or feasible to make adjustments to the Sphere 3D Corp. 2025 Performance Incentive Plan or the awards granted thereunder, (iii) a dissolution, liquidation or wind-up of the Issuer or (iv) if the reporting person is no longer an employee or director of the Issuer (other than a voluntary resignation as a director). Each RSU represents a contingent right to receive one common share of the Issuer.

**Signature:** /s/ Joel M Block  
**Date:** 2026-06-01

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**