MarketPeel
Insider Trading Intelligence
BS

Brunilda Shtylla

STRO
CHIEF BUSINESS OFFICER · SUTRO BIOPHARMA, INC. · CIK 0001966915
FILING MIX · LIFETIME44%/56%
BUYS
4
SELLS
5
TOTAL VALUE
$152.1K
COMPANIES
1
ACTIVE SINCE
Mar 2023
HOLDINGS NOW
0
AVG SELL PX
$4.82
TRADE KIND
SHOWING 9 / 9
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Brunilda Shtylla, 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+100.00%-4.67%+2.01%-6.68%-6.68%
14d2+100.00%-2.35%+1.27%-3.62%-3.62%
30d2+100.00%-28.36%-2.42%-25.94%-25.94%
60d2+100.00%-42.78%-5.15%-37.63%-37.63%
90d2+100.00%-48.23%+3.40%-51.63%-51.63%
180d2+50.00%-1.89%+14.72%-16.61%-16.61%
1y2+0.00%+4.98%+29.08%-24.09%-24.09%
2y2+100.00%-81.38%+49.48%-130.86%-130.86%
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
STRO · 0 shares · as of Aug 28, 2023
010,00020,00030,00040,000SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2023
2023
2023
FLOW · 4 buys / 5 sellsCOVERAGE · 3 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
STRO
SUTRO BIOPHARMA, INC.
SALE
Chief Business Officer
15,428$4.71$72.6K0Aug 28, 2023Aug 29, 2023View →
STRO
SUTRO BIOPHARMA, INC.
SALE
Chief Business Officer
11,613$4.59$53.3K12,928Aug 25, 2023Aug 28, 2023View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
27,50027,500Mar 3, 2023Mar 7, 2023View →
STRO
SUTRO BIOPHARMA, INC.
SALE
Chief Business Officer
6,75020,250Mar 3, 2023Mar 7, 2023View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASEGRANT
Stock grant
40,00040,000Mar 3, 2023Mar 7, 2023View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASE
Chief Business Officer
4,37529,077Mar 3, 2023Mar 7, 2023View →
STRO
SUTRO BIOPHARMA, INC.
SALE
Chief Business Officer
4,3758,750Mar 3, 2023Mar 7, 2023View →
STRO
SUTRO BIOPHARMA, INC.
SALE
Chief Business Officer
4,536$5.79$26.3K25,541Mar 3, 2023Mar 7, 2023View →
STRO
SUTRO BIOPHARMA, INC.
PURCHASE
Chief Business Officer
6,75024,702Mar 3, 2023Mar 7, 2023View →
Other insiders · STRO
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About this filer
CIK 0001966915
ROLE
Chief Business Officer
PRIMARY
STRO
COMPANIES
1
ACTIVE SINCE
Mar 2023
MARKETPEEL · /INSIDER/0001966915DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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