8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

     Date of Report (Date of earliest event reported): April 22, 2026

    

Definium Therapeutics, Inc.

(Exact name of Registrant as Specified in Its Charter)


British Columbia	001-40360	98-1582438
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

One World Trade Center Suite 8500
New York, New York		10007
(Address of Principal Executive Offices)		(Zip Code)

     Registrant’s Telephone Number, Including Area Code: (212) 220-6633

    

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Shares	DFTX	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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)

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 hereunto duly authorized.


			DEFINIUM THERAPEUTICS, INC.

Date:	April 22, 2026	By:	/s/ Robert Barrow
			Name: Robert Barrow Title: Chief Executive Officer

Definium Therapeutics Inc. filed SEC Form 8-K: Other Events, Financial Statements and Exhibits