Passage BIO PASG Insider Ownership

NASDAQ PASG

$3.59 -0.01 (-0.28%)

At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

2.08Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

30.81%

■0% pp QoQ

Shares Held by Insiders

991.30K

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

3.22Mn

3,217,810 shares

Direct Holdings

14.23K

Indirect: 977.08K

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past 12 months, Passage BIO insiders bought $206,101 of stock on the open market (50.05K shares) and sold $113,181 (6.14K shares).

By number of insiders, Passage BIO saw one insider buy and 2 insiders sell on the open market over the past 12 months.
Among PASG insiders, Lynx1 Capital Management LP (10% owner) bought the most stock on the open market in the past 12 months: $206,101 (50.05K shares), most recently on June 25, 2026.
On the selling side, William Chou (President and CEO) was the top open-market seller of Passage BIO over the past 12 months, with $75,159 sold (4.08K shares) and the latest sale on January 8, 2026.
In transactions other than open-market trades, Passage BIO insiders acquired 15K shares through option exercises and conversions over the past 12 months.
According to Business Quant data, insiders at Passage BIO reported 991.3K shares in total in their latest Form 4 filings, or 30.81% of the 3.22Mn shares outstanding; that total is unchanged from 991.3K shares at the end of Q2 2026 and up 6.18% from 933.65K shares at the end of Q3 2025.
By type of ownership, PASG insiders hold 1.44% of their shares directly (14.23K shares) and 98.56% indirectly (977.08K shares).
PASG's insider total is spread across 5 insiders who have filed a Form 4 in the past two years.
Passage BIO's top three insider holders by shares held are Lynx1 Capital Management LP (10% owner, 673.76K shares), Orbimed Advisors LLC (10% owner, 303.32K shares) and William Chou (President and CEO, 6.52K shares).
Lynx1 Capital Management LP holds 67.97% of the combined insider position in Passage BIO.
In the last 12 months, 11 Form 4 filings with transactions in PASG stock came from 9 insiders.
This summary of Passage BIO insider activity covers Form 4 filings through June 29, 2026.

Form 4 Holdings

Insiders Holding PASG

Insiders 10

Shares held 2.08Mn

Of outstanding 64.76%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Capital Management Lp Lynx1	TenPercentOwner	0	1,760,311	1,760,311	84.5%	29 Jun, 2026
2	Advisors Llc Orbimed	TenPercentOwner	0	303,317	303,317	14.6%	26 Jun, 2025
3	William Chou	President And Ceo	6,524	0	6,524	0.3%	12 Jan, 2026
4	Kathleen Borthwick	Cfo	5,402	0	5,402	0.3%	12 Jan, 2026
5	Edgar B. Cale	Gc Corporate Secretary	2,300	0	2,300	0.1%	03 Jan, 2024
6	Mark S Forman	Chief Medical Officer	2,263	0	2,263	0.1%	03 Jan, 2024
7	Alexandros Fotopoulos	Chief Technical Officer	1,435	0	1,435	0.1%	20 Jun, 2023
8	Simona King	Chief Financial Officer	1,200	0	1,200	0.1%	01 Aug, 2023
9	Bruce A Goldsmith	Ceo And President	799	0	799	0.0%	23 Mar, 2022
10	Monika Maria Toernsen	Chief Commercial Officer	166	0	166	0.0%	18 Nov, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

255 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
25 Jun, 2026	Capital Management Lp Lynx1	TenPercentOwner	Acquired P	50,055	$4.12	$206.10K	673,759	Indirect
19 May, 2026	Athena Countouriotis	Director	Acquired A	10,539	$0.00	$0	10,539	Direct
19 May, 2026	Sandip Kapadia	Director	Acquired A	10,539	$0.00	$0	10,539	Direct
19 May, 2026	Derrell Porter	Director	Acquired A	10,539	$0.00	$0	10,539	Direct
19 May, 2026	Thomas Richard Kassberg	Director	Acquired A	10,539	$0.00	$0	10,539	Direct
19 May, 2026	Dolan Sondhi	Director	Acquired A	10,539	$0.00	$0	10,539	Direct
19 May, 2026	Maxine Gowen	Director	Acquired A	10,539	$0.00	$0	10,539	Direct
16 Mar, 2026	Kathleen Borthwick	Cfo	Acquired A	15,610	$0.00	$0	15,610	Direct
16 Mar, 2026	William Chou	President And Ceo	Acquired A	58,000	$0.00	$0	58,000	Direct
08 Jan, 2026	Kathleen Borthwick	Cfo	Acquired M	5,000	—	—	7,464	Direct
08 Jan, 2026	William Chou	President And Ceo	Acquired M	10,000	—	—	10,600	Direct
08 Jan, 2026	William Chou	President And Ceo	Disposed S	4,076	$18.44	$75.16K	6,524	Direct
08 Jan, 2026	Kathleen Borthwick	Cfo	Disposed S	2,062	$18.44	$38.02K	5,402	Direct
08 Jan, 2026	Kathleen Borthwick	Cfo	Disposed M	5,000	$0.00	$0	5,000	Direct
08 Jan, 2026	William Chou	President And Ceo	Disposed M	10,000	$0.00	$0	10,000	Direct
11 Sep, 2025	Capital Management Lp Lynx1	TenPercentOwner	Acquired P	325	$6.96	$2.26K	592,021	Indirect
12 Sep, 2025	Capital Management Lp Lynx1	TenPercentOwner	Acquired P	19,783	$6.99	$138.30K	611,804	Indirect
15 Sep, 2025	Capital Management Lp Lynx1	TenPercentOwner	Acquired P	11,900	$6.99	$83.18K	623,704	Indirect
22 Jul, 2025	Capital Management Lp Lynx1	TenPercentOwner	Acquired P	13,123	$5.44	$71.34K	475,971	Indirect
23 Jul, 2025	Capital Management Lp Lynx1	TenPercentOwner	Acquired P	49,302	$5.74	$283.03K	525,273	Indirect

Showing 1 to 20 of 255 transactions