# EDGAR Filing Document

**Accession Number:** 0001771885
**File Stem:** 0001171843-26-002207
**Filing Date:** 2026-4
**Character Count:** 6853
**Document Hash:** 8c761044277906e96d70ebc716d6ca18
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001171843-26-002207.hdr.sgml**: 20260402

**ACCESSION NUMBER**: 0001171843-26-002207

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260402

**FILED AS OF DATE**: 20260402

**DATE AS OF CHANGE**: 20260402

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Quantum Biopharma Ltd.
- **CENTRAL INDEX KEY:** 0001771885
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A6
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39152
- **FILM NUMBER:** 26830735

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 55 UNIVERSITY AVENUE, SUITE 1003
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 2H7
- **BUSINESS PHONE:** (416) 854-8884

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 55 UNIVERSITY AVENUE, SUITE 1003
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 2H7

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FSD Pharma Inc.
- **DATE OF NAME CHANGE:** 20190327

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**Form 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934**

**For the month of April 2026**

Commission File Number: **001-39152**

**Quantum BioPharma Ltd.**

(Translation of registrant's name into English)

**1 Adelaide Street East, Suite 801 Toronto, Ontario M5C 2V9**

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F [ X ] &nbsp;&nbsp;&nbsp;&nbsp; Form 40-F [ ]

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| | |
|:---|:---|
|  | <u>**&nbsp;&nbsp;&nbsp;&nbsp;Quantum BioPharma Ltd.&nbsp;&nbsp;&nbsp;&nbsp;**</u> |
|  | (Registrant) |
| Date: April 2, 2026 | <u>&nbsp;&nbsp;&nbsp;&nbsp;/s/ Donal Carroll&nbsp;&nbsp;&nbsp;&nbsp;</u> |
|  | Donal Carroll |
|  | Chief Financial Officer |

---

------

**EXHIBIT INDEX**

---

| | |
|:---|:---|
| <u>**Exhibit Number**</u> | <u>**Description**</u> |
| [99.1](exh_991.htm) | [Press Release dated April 2, 2026](exh_991.htm) |

---

## Exhibit 99.1

**EXHIBIT 99.1**

**Quantum BioPharma Wins Significant Court Challenge in USD $700,000,000 Claim as Defendants Joint Motion to Dismiss Lawsuit Alleging Market Manipulation by CIBC World Markets and RBC Dominion Securities is Denied**

TORONTO, April 02, 2026 (GLOBE NEWSWIRE) -- Quantum BioPharma Ltd. (NASDAQ: QNTM) (CSE: QNTM) (FRA: 0K91) ("**Quantum BioPharma**" or the "**Company**"), a biopharmaceutical company dedicated to building a portfolio of innovative assets and biotech solutions, today announced that the United States District Court for the Southern District of New York has largely ruled against defendants CIBC World Markets ("CIBC") and RBC Dominion Securities ("RBC") joint motion to dismiss Quantum Biopharma's lawsuit alleging illegal market manipulation.

The Quantum Biopharma lawsuit alleges that between January 1, 2020, and August 15, 2024, the Defendants and/or their customers used "spoofing" techniques to manipulate the share price of Quantum BioPharma shares. The Company alleges that these market manipulation schemes violated Section 10(b) and Rule 10b-5(a) and (c) and Section 9(a) of the Securities Exchange Act of 1934.

The full text of the Court's ruling can be found here: District Court Opinion & Order

**About Quantum BioPharma Ltd.**

Quantum BioPharma is a biopharmaceutical company dedicated to building a portfolio of innovative assets and biotech solutions for the treatment of challenging neurodegenerative and metabolic disorders and alcohol misuse disorders with drug candidates in different stages of development. Through its wholly owned subsidiary, Lucid Psycheceuticals Inc. ("**Lucid**"), Quantum BioPharma is focused on the research and development of its lead compound, Lucid-MS. Lucid-MS is a patented new chemical entity shown to prevent and reverse myelin degradation, the underlying mechanism of multiple sclerosis, in preclinical models. Quantum BioPharma invented UNBUZZD™ and spun out its OTC version to a company, Unbuzzd Wellness Inc. ("**UWI**"), led by industry veterans. Quantum BioPharma retains ownership of 19.84% (as of December 31, 2025) of UWI at www.unbuzzd.com. The agreement with UWI also includes royalty payments of 7% of sales from unbuzzd™ until payments to Quantum BioPharma total $250 million. Once $250 million is reached, the royalty drops to 3% in perpetuity. Quantum BioPharma retains 100% of the rights to develop similar product or alternative formulations specifically for pharmaceutical and medical uses.

**Forward-Looking Information**

*Certain information in this news release constitutes forward-looking statements under applicable securities laws. Any statements that are contained in this news release that are not statements of historical fact may be deemed to be forward-looking statements. Forward-looking statements are often identified by terms such as "may", "should", "anticipate", "expect", "potential", "believe", "intend" or the negative of these terms and similar expressions.* 

*Readers are cautioned that the foregoing list is not exhaustive. Readers are further cautioned not to place undue reliance on forward-looking statements, as there can be no assurance that the plans, intentions or expectations upon which they are placed will occur. Such information, although considered reasonable by management at the time of preparation, may prove to be incorrect and actual results may differ materially from those anticipated.*

*Forward-looking statements contained in this press release are expressly qualified by this cautionary statement and reflect the Company's expectations as of the date hereof and are subject to change thereafter. The Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, estimates or opinions, future events or results or otherwise or to explain any material difference between subsequent actual events and such forward- looking information, except as required by applicable law.*

**Contacts:**

Quantum BioPharma Ltd.

Zeeshan Saeed, Founder, CEO and Executive Co-Chairman of the Board

Email: Zsaeed@quantumbiopharma.com

Telephone: (416) 854-8884

Investor Relations

Email: ir@quantumbiopharma.com, info@quantumbiopharma.com

Website: www.quantumbiopharma.com