MNMD Mind Medicine (Mindmed) Inc. - 8-K

Item 8.01 Other Events.

On April 22, 2026, Definium Therapeutics, Inc. (the “Company”) issued a press release (the “Press Release”) announcing clinical and commercial updates presented at the Company's Investor and Analyst Day. A copy of the Press Release is attached as Exhibit 99.1 hereto, and is incorporated by reference herein.

On April 22, 2026, the Company posted the presentation from its Investor and Analyst Day (the “Presentation”) to its website. A copy of the Presentation is filed herewith as Exhibit 99.2 and is incorporated by reference in this Item 8.01.

Item 9.01 Financial Statements and Exhibits.

Exhibit No.

Description

99.1

Press Release, dated April 22, 2026

99.2

Investor and Analyst Day Presentation, dated April 22, 2026

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)