MarketPeel
Insider Trading Intelligence
SF

Steven M. Foster

TNON
CEO AND PRESIDENT · TENON MEDICAL, INC. · CIK 0001897435
FILING MIX · LIFETIME71%/29%
BUYS
5
SELLS
2
TOTAL VALUE
$152.4K
COMPANIES
1
ACTIVE SINCE
May 2023
HOLDINGS NOW
163,814
AVG SELL PX
$1.26
TRADE KIND
SHOWING 7 / 7
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizonsHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Steven M. Foster, 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%-7.87%+1.47%-9.35%-9.35%
14d1+100.00%-28.27%+3.37%-31.63%-31.63%
30d1+100.00%-76.53%+5.81%-82.34%-82.34%
60d1+100.00%-75.51%+9.60%-85.12%-85.12%
90d1+100.00%-80.31%+6.49%-86.81%-86.81%
180d1+100.00%-84.72%+10.50%-95.22%-95.22%
1y1+100.00%-94.11%+29.80%-123.91%-123.91%
2y1+100.00%-98.92%+44.67%-143.59%-143.59%
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
TNON · 163,814 shares · as of Jan 1, 2026
070,468140,936211,404281,872202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 5 buys / 2 sellsCOVERAGE · 12 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
TNON
TENON MEDICAL, INC.
SALE
CEO and President
140,936140,936Jan 1, 2026Jan 5, 2026View →
TNON
TENON MEDICAL, INC.
PURCHASE
CEO and President
140,936163,814Jan 1, 2026Jan 5, 2026View →
TNON
TENON MEDICAL, INC.
PURCHASE
CEO and President
19,45522,878Nov 14, 2025Nov 18, 2025View →
TNON
TENON MEDICAL, INC.
PURCHASE
CEO and President
19,45519,455Nov 14, 2025Nov 18, 2025View →
TNON
TENON MEDICAL, INC.
PURCHASEGRANT
Stock grant
281,872281,872Oct 13, 2025Oct 15, 2025View →
TNON
TENON MEDICAL, INC.
SALE
CEO and President
27,791$1.26$35.0K44,686May 23, 2023May 24, 2023View →
TNON
TENON MEDICAL, INC.
PURCHASE
CEO and President
72,477$1.62$117.4K72,477May 22, 2023May 24, 2023View →
Other insiders · TNON
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About this filer
CIK 0001897435
ROLE
CEO and President
PRIMARY
TNON
COMPANIES
1
ACTIVE SINCE
May 2023
MARKETPEEL · /INSIDER/0001897435DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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