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): March 4, 2026

PASSAGE BIO, INC.

(Exact name of registrant as specified in its charter)

Delaware	001-39231	82-2729751
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

One Commerce Square 2005 Market Street, 39^th Floor Philadelphia, PA	19103
(Address of principal executive offices)	(Zip Code)

(267) 866-0311

(Registrant’s telephone number, including area code)

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, $0.0001 Par Value Per Share	PASG	The Nasdaq Stock Market LLC (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 1.02 Termination of a Material Definitive Agreement.

On March 4, 2026, Passage Bio, Inc. (the “Company”) and Hopewell Campus Owner LLC (the “Landlord”) entered into a lease termination agreement (the “Termination Agreement”) with respect to that certain lease agreement dated December 15, 2020 between the Company and Landlord (the “Hopewell Lease”). Pursuant to the Termination Agreement, the Company agreed to pay the Landlord a termination fee of approximately $4.8 million as well as accrued rent through February 14, 2026.

Pursuant to the Hopewell Lease, the Company had leased approximately 62,000 square feet of laboratory space. This lease had a 15-year term from the lease commencement date of March 2021. Following the Company’s restructuring in January 2025, the Company ceased all operations at the facilities subject to the Hopewell Lease. Following the execution of the Termination Agreement, the Company maintains the expectation that cash and cash equivalents will fund operations through the first quarter of 2027. We have based this estimate on assumptions that may prove to be wrong, and our operating plan may change as a result of factors currently unknown to us. As a result, we could deplete our capital resources sooner than we currently expect.

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.

	PASSAGE BIO, INC.

Date: March 10, 2026	By:	/s/ Kathleen Borthwick
		Kathleen Borthwick
		Chief Financial Officer

Passage Bio Inc. filed SEC Form 8-K: Termination of a Material Definitive Agreement