Passage Bio Inc.

Last updated September 27, 2026

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Organization details

Legal name: Passage Bio Inc.
Ownership: Public
Status: Active
Sector (GICS): Health Care
SIC code: 2836 — Biological Products, (No Diagnostic Substances)
Jurisdiction of incorporation: Delaware
Headquarters city: Philadelphia
Headquarters state / province: Pennsylvania
Headquarters country: United States
Fiscal year end: December
Ticker symbol: PASG
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0001787297
EIN: 82-2729751

Board of directors

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Athena Countouriotis · Director
Since 2023
Derrell Porter · Director
Since 2023
Dolan Sondhi · Director
Since 2023
Maxine Gowen · Director
Since 2023
Michael E. Kamarck · Director
Since 2023
Sandip Kapadia · Director
Since 2023
Saqib Islam · Director
Since 2023
Thomas Richard Kassberg · Director
Since 2024
Thomas Woiwode · Director
Since 2023
William Chou · Director · PRESIDENT AND CEO
Since 2023

Chief executives

William Chou · President and CEO

Dates unknown

Director election results

Annual meeting of May 19, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Athena Countouriotis

65.2%
Sandip Kapadia

65.3%

Board connections

5 of this board's directors also sit on 6 other boards. 6 are in the same sector.

Shared director Other board Same sector

ARS Pharmaceuticals Inc. Same sector
via Saqib Islam
Aclaris Therapeutics Inc. Same sector
via Maxine Gowen
Acumen Pharmaceuticals Inc. Same sector
via Derrell Porter
BioMarin Pharmaceutical Inc. Same sector
via Athena Countouriotis
Iovance Biotherapeutics Inc. Same sector
via Athena Countouriotis
Vaxcyte Inc. Same sector
via Michael E. Kamarck

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $206,227; 1 purchase by 1 insider
Sold, last 12 months: $113,185; 2 sales by 2 insiders

Date	Insider	Transaction	Shares	Price	Value
Jun 25, 2026	Nichols Weston 10% owner	Open-market purchase	+50,055	$4.12	$206,227
Jan 8, 2026	William Chou Director, Officer (PRESIDENT AND CEO)	Option exercise	+10,000	—	—
Jan 8, 2026	Borthwick Kathleen Officer (CFO)	Option exercise	+5,000	—	—
Jan 8, 2026	William Chou Director, Officer (PRESIDENT AND CEO)	Open-market sale	−4,076	$18.44	$75,161
Jan 8, 2026	Borthwick Kathleen Officer (CFO)	Open-market sale	−2,062	$18.44	$38,023
Sep 15, 2025	Nichols Weston 10% owner	Open-market purchase	+11,900	$6.99	$83,181
Sep 12, 2025	Nichols Weston 10% owner	Open-market purchase	+19,783	$6.99	$138,283
Sep 11, 2025	Nichols Weston 10% owner	Open-market purchase	+325	$6.96	$2,262
Jul 24, 2025	Lynx1 Capital Management LP 10% owner	Open-market purchase	+66,423	$5.71	$379,275
Jul 23, 2025	Lynx1 Capital Management LP 10% owner	Open-market purchase	+49,302	$5.74	$282,993
Jul 22, 2025	Lynx1 Capital Management LP 10% owner	Open-market purchase	+13,123	$5.44	$71,389
Jun 26, 2025	ORBIMED ADVISORS LLC 10% owner	Open-market sale	−213,257	$0.33	$70,375
Jun 25, 2025	ORBIMED ADVISORS LLC 10% owner	Open-market sale	−138,800	$0.33	$45,804
Jun 24, 2025	ORBIMED ADVISORS LLC 10% owner	Open-market sale	−231,600	$0.35	$81,060
Apr 24, 2025	ORBIMED ADVISORS LLC 10% owner	Open-market sale	−68,195	$0.32	$21,822

Peers

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Questions about Passage Bio Inc.

Who is the CEO of Passage Bio Inc.?

William Chou is Passage Bio Inc.'s President and CEO.

How many directors are on Passage Bio Inc.'s board?

Passage Bio Inc.'s board has 10 directors: Athena Countouriotis, Derrell Porter, Dolan Sondhi, Maxine Gowen, Michael E. Kamarck, Sandip Kapadia, Saqib Islam, Thomas Richard Kassberg, Thomas Woiwode and William Chou.

Are Passage Bio Inc. insiders buying or selling shares?

Over the last 12 months, Passage Bio Inc. insiders bought $206,227 of shares in 1 purchase and sold $113,185 of shares in 2 sales on the open market, as reported to the SEC on Forms 4 and 5.

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