Thomas Richard Kassberg - May 28, 2025 Form 4 Insider Report for Passage BIO, Inc. (PASG)

Role: Director
Signature: /s/ William Chou, Attorney-in-Fact
Stock symbol: PASG
Transactions as of: May 28, 2025
Transactions value $: $0
Form type: 4
Date filed: 5/30/2025, 07:26 PM
Previous filing: Mar 4, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kassberg Thomas Richard	Director	ONE COMMERCE SQUARE, 2005 MARKET STREET, 39TH FLOOR, PHILADELPHIA	/s/ William Chou, Attorney-in-Fact	2025-05-30	0001303811

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PASG	Director Stock Option (right to buy)	Award	$0	+144K		$0.00	144K	May 28, 2025	Common Stock	144K	$0.36	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The stock option vests in full on the earlier of: (i) the one year anniversary of the grant date or (ii) the date of the issuer's 2026 Annual Meeting of its stockholders, subject to the reporting person's continuous service to the issuer on such date.