William Chou

CIK: 0001949693

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (20.0%)

Position reduction

Option Exercises (M)1 (20.0%)

Derivative conversions

Awards (A)3 (60.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

PASG

Passage BIO, Inc.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (5 total)

PASG
Passage BIO, Inc.
Mar 16, 2026
Award(A)
Employee Stock Option (right to buy)
Direct
58K shares-
PASG
Passage BIO, Inc.
Jan 8, 2026
Exercise(M)
Direct
10K shares-
PASG
Passage BIO, Inc.
Jan 8, 2026
Sale(S)
Direct
4.1K shares at avg. $18.44$75K
PASG
Passage BIO, Inc.
Mar 15, 2025
Award(A)
Employee Stock Option (right to buy)
Direct
779.5K shares-
PASG
Passage BIO, Inc.
Jan 15, 2025
Award(A)
Restricted Stock Unit
Direct
20K shares-

		Type	Shares	Price		Ownership
Mar 16, 2026	PASG Passage BIO, Inc.	Award(A) Employee Stock Option (right to buy)	58,000	-	-	Direct
Jan 8, 2026	PASG Passage BIO, Inc.	Exercise(M)	10,000	-	$0	Direct
Jan 8, 2026	PASG Passage BIO, Inc.	Sale(S)	4,076	$18.44	$75,159	Direct
Mar 15, 2025	PASG Passage BIO, Inc.	Award(A) Employee Stock Option (right to buy)	779,533	-	-	Direct
Jan 15, 2025	PASG Passage BIO, Inc.	Award(A) Restricted Stock Unit	20,000	-	-	Direct

1-5 of 5 transactions

About Chou William

Chou William (SEC CIK 0001949693) files insider reports with the SEC as PRESIDENT AND CEO of Passage BIO, Inc. (PASG).

Signal8 holds 4 ownership filings by Chou William, all Form 4s, filed between Mar 18, 2025 and Mar 18, 2026. Those filings report 5 transactions, from Jan 15, 2025 to Mar 16, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Chou William's filings is in PHILADELPHIA, PA.

Recent filings by Chou William

Mar 16, 2026: Grant or award of PASG derivative securities (Form 4, code A).
Jan 8, 2026: Option exercise of PASG shares (Form 4, code M).
Jan 8, 2026: Open-market sale of PASG shares (Form 4, code S).
Mar 15, 2025: Grant or award of PASG derivative securities (Form 4, code A).
Jan 15, 2025: Grant or award of PASG derivative securities (Form 4, code A).

Other insiders filing for Passage BIO, Inc. (PASG)

How to read Form 4 transaction codes