8-K

Jade Biosciences, Inc.

Date: April 22, 2026

/s/ Bradford Dahms

Bradford Dahms

Chief Financial Officer

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 18, 2026

Jade Biosciences, Inc.

(Exact name of registrant as specified in its charter)


Nevada	001-40544	83-1377888
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)


221 Crescent St., Building 23
Suite 105
Waltham, MA		02453
(Address of principal executive offices)		(Zip Code)

(Registrant’s telephone number, including area code): (781) 312-3013

N/A

(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 stock, par value $0.0001 per share	JBIO	The Nasdaq Capital Market

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 5.02.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On April 18, 2026, the Board of Directors of Jade Biosciences, Inc. (the “Company”) appointed Andrew King, BVMS, Ph.D. as the Company’s President, Research & Development, effective as of April 18, 2026. Dr. King was previously the Company’s Chief Scientific Officer and Head of Research & Development. No changes were made to Dr. King’s compensation in connection with such appointment.

SIGNATURE

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.

SEC Form 8-K filed by Jade Biosciences Inc.