MarketPeel
Insider Trading Intelligence
MG

Michael Gray

UPB
CFO AND COO · UPSTREAM BIO, INC. · CIK 0001271411
FILING MIX · LIFETIME60%/40%
BUYS
3
SELLS
2
TOTAL VALUE
$13.1K
COMPANIES
1
ACTIVE SINCE
Feb 2025
HOLDINGS NOW
28,795
AVG SELL PX
$7.69
TRADE KIND
SHOWING 5 / 5
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 Michael Gray, 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%-12.07%-2.04%-10.03%-10.03%
14d1+100.00%-8.64%-5.54%-3.10%-3.10%
30d1+0.00%+2.81%+4.62%-1.81%-1.81%
60d1+100.00%-9.47%+10.95%-20.42%-20.42%
90d1+100.00%-34.81%+10.87%-45.68%-45.68%
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
UPB · 28,795 shares · as of Jun 16, 2026
048,75097,500146,250195,0002026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2025
2025
2026
2026
FLOW · 3 buys / 2 sellsCOVERAGE · 6 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
UPB
UPSTREAM BIO, INC.
SALE
CFO and COO
853$6.10$5.2K28,795Jun 16, 2026Jun 17, 2026View →
UPB
UPSTREAM BIO, INC.
SALE
CFO and COO
852$9.29$7.9K29,648Mar 16, 2026Mar 17, 2026View →
UPB
UPSTREAM BIO, INC.
PURCHASEGRANT
Stock grant
30,50030,500Jan 2, 2026Jan 6, 2026View →
UPB
UPSTREAM BIO, INC.
PURCHASEGRANT
Stock grant
91,50091,500Jan 2, 2026Jan 6, 2026View →
UPB
UPSTREAM BIO, INC.
PURCHASEGRANT
Stock grant
195,000195,000Feb 6, 2025Feb 7, 2025View →
Other insiders · UPB
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About this filer
CIK 0001271411
ROLE
CFO and COO
PRIMARY
UPB
COMPANIES
1
ACTIVE SINCE
Feb 2025
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