MarketPeel
Insider Trading Intelligence
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Ai Biotechnology Llc

UPB
10% OWNER · UPSTREAM BIO, INC. · CIK 0001942670
FILING MIX · LIFETIME67%/33%
BUYS
4
SELLS
2
TOTAL VALUE
$32.48M
COMPANIES
2
ACTIVE SINCE
Oct 2024
HOLDINGS NOW
6,552,725
AVG SELL PX
TRADE KIND
SHOWING 6 / 6
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 4 pending
Forward-return performance of every backtestable P/S trade by Ai Biotechnology Llc, 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
7d2+50.00%+4.38%-0.27%+4.66%+4.66%
14d2+100.00%+4.84%-1.51%+6.36%+6.36%
30d2+50.00%+0.19%-2.83%+3.02%+3.02%
60d2+0.00%-16.02%+3.98%-20.01%-20.01%
90d2+0.00%-44.06%+0.61%-50.92%-50.92%
180d2(1 pending)+0.00%-67.04%-6.42%-60.62%-60.62%
1y2(1 pending)+0.00%-5.70%+15.46%-21.16%-21.16%
2y2(2 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
UPB · 0 shares · as of Oct 15, 2024
01,373,6032,747,2054,120,8085,494,410SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2024
2025
2025
2025
2025
2026
FLOW · 4 buys / 2 sellsCOVERAGE · 6 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ZURA
ZURA BIO LTD
PURCHASE
2,000,000$6.25$12.50M6,552,725Feb 26, 2026Mar 2, 2026View →
UPB
UPSTREAM BIO, INC.
PURCHASE
3,147,0004,322,000Oct 15, 2024Oct 17, 2024View →
UPB
UPSTREAM BIO, INC.
PURCHASE10b5-1
10b5-1 plan
1,175,000$17.00$19.98M1,175,000Oct 15, 2024Oct 17, 2024View →
UPB
UPSTREAM BIO, INC.
PURCHASE
1,172,4105,494,410Oct 15, 2024Oct 17, 2024View →
UPB
UPSTREAM BIO, INC.
SALE
3,147,0000Oct 15, 2024Oct 17, 2024View →
UPB
UPSTREAM BIO, INC.
SALE
1,172,4100Oct 15, 2024Oct 17, 2024View →
Other insiders · UPB
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About this filer
CIK 0001942670
ROLE
10% Owner
PRIMARY
UPB
COMPANIES
2
ACTIVE SINCE
Oct 2024
MARKETPEEL · /INSIDER/0001942670DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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