MarketPeel
Insider Trading Intelligence
WC

William Chou

PASG
PRESIDENT AND CEO · PASSAGE BIO, INC. · CIK 0001949693
FILING MIX · LIFETIME78%/22%
BUYS
7
SELLS
2
TOTAL VALUE
$75.2K
COMPANIES
1
ACTIVE SINCE
Oct 2022
HOLDINGS NOW
58,000
AVG SELL PX
$18.44
TRADE KIND
SHOWING 9 / 9
Trades · vs SPY
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Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by William Chou, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d1+100.00%-22.09%+0.40%-22.49%-22.49%
14d1+100.00%-30.71%-0.08%-30.64%-30.64%
30d1+100.00%-48.12%+0.16%-48.28%-48.28%
60d1+100.00%-52.05%-1.63%-50.42%-50.42%
90d1+100.00%-49.32%-1.96%-47.36%-47.36%
180d1(1 pending)
1y1(1 pending)
2y1(1 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
PASG · 58,000 shares · as of Mar 16, 2026
0221,250442,500663,750885,0002023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 7 buys / 2 sellsCOVERAGE · 14 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
PASG
PASSAGE BIO, INC.
PURCHASEGRANT
Stock grant
58,00058,000Mar 16, 2026Mar 18, 2026View →
PASG
PASSAGE BIO, INC.
PURCHASE
PRESIDENT AND CEO
10,00010,600Jan 8, 2026Jan 12, 2026View →
PASG
PASSAGE BIO, INC.
SALE
PRESIDENT AND CEO
4,076$18.44$75.2K6,524Jan 8, 2026Jan 12, 2026View →
PASG
PASSAGE BIO, INC.
SALE
PRESIDENT AND CEO
10,00010,000Jan 8, 2026Jan 12, 2026View →
PASG
PASSAGE BIO, INC.
PURCHASEGRANT
Stock grant
779,533779,533Mar 15, 2025Mar 18, 2025View →
PASG
PASSAGE BIO, INC.
PURCHASEGRANT
Stock grant
20,00020,000Jan 15, 2025Dec 29, 2025View →
PASG
PASSAGE BIO, INC.
PURCHASEGRANT
Stock grant
575,000575,000Mar 15, 2024Mar 19, 2024View →
PASG
PASSAGE BIO, INC.
PURCHASEGRANT
Stock grant
608,615608,615Mar 15, 2023Apr 5, 2023View →
PASG
PASSAGE BIO, INC.
PURCHASEGRANT
Stock grant
885,000885,000Oct 10, 2022Oct 12, 2022View →
Other insiders · PASG
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About this filer
CIK 0001949693
ROLE
PRESIDENT AND CEO
PRIMARY
PASG
COMPANIES
1
ACTIVE SINCE
Oct 2022
MARKETPEEL · /INSIDER/0001949693DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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