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ISSUER PROFILE · CIK 0001787297 · CUSIP 702712100

Passage BIO, Inc.PASG

3 13D/G filings 2 distinct filers 15 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d
avg —
Median 60d
avg —
Median 90d
avg —
Median 180d
avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Cross-Reference Snapshot

Activist filings
3
1 SCHEDULE · 2 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
15
8 buys · 5 sales
Latest short DTC
3.64
as of 2026-05-29

13D/G Filings Timeline · 3 total

FiledFormFilerStakeSharesIntent
2025-07-21 SCHEDULE ORBIMED ADVISORS LLC 7.82% 243,878 view →
2024-04-12 SC ORBIMED ADVISORS LLC view →
2021-01-27 SC Frazier Life Sciences IX, L.P. view →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-03-16 Borthwick Kathleen officer Award 15,610 $7.64 $119K
2026-03-16 Chou William director, officer Award 58,000 $7.64 $443K
2026-01-08 Chou William director, officer Option exercise 10,000
2026-01-08 Borthwick Kathleen officer Option exercise 5,000
2026-01-08 Chou William director, officer Sale 4,076 $18.44 $75K
2026-01-08 Borthwick Kathleen officer Sale 2,062 $18.44 $38K
2025-09-15 Lynx1 Capital Management LP 10%+ Buy 11,900 $6.99 $83K
2025-09-12 Lynx1 Capital Management LP 10%+ Buy 19,783 $6.99 $138K
2025-09-11 Lynx1 Capital Management LP 10%+ Buy 325 $6.96 $2K
2025-07-24 Lynx1 Capital Management LP 10%+ Buy 66,423 $5.71 $379K
2025-07-23 Lynx1 Capital Management LP 10%+ Buy 49,302 $5.74 $283K
2025-07-22 Lynx1 Capital Management LP 10%+ Buy 13,123 $5.44 $71K
2025-06-26 ORBIMED ADVISORS LLC 10%+ Sale 213,257 $0.33 $70K
2025-06-25 ORBIMED ADVISORS LLC 10%+ Sale 138,800 $0.33 $46K
2025-06-24 ORBIMED ADVISORS LLC 10%+ Sale 231,600 $0.35 $81K

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-05-29 121,984 3.64 -25.0%
2026-05-15 162,626 1.86 +12.1%
2026-04-30 145,029 1.00 +113.0%
2026-04-15 68,090 1.45 -40.5%
2026-03-31 114,499 3.16 +16.4%
2026-03-13 98,369 1.91 +7.7%
2026-02-27 91,327 4.99 -0.5%
2026-02-13 91,808 1.85 +718.3%
2026-01-30 11,220 1.00 -25.9%
2026-01-15 15,142 1.00 -22.5%
2025-12-31 19,538 1.00 +25.4%
2025-12-15 15,577 1.00 -12.0%

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