MarketPeel
Insider Trading Intelligence
KX

Kang Xu

SES
CHIEF TECHNOLOGY OFFICER · SES AI CORP · CIK 0002039201
FILING MIX · LIFETIME33%/67%
BUYS
2
SELLS
4
TOTAL VALUE
$180.5K
COMPANIES
1
ACTIVE SINCE
Feb 2025
HOLDINGS NOW
801,635
AVG SELL PX
$1.27
TRADE KIND
SHOWING 6 / 6
Trades · vs SPY
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Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 1 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Kang Xu, 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%+1.10%-13.17%-13.17%
14d1+100.00%-21.54%-1.27%-20.28%-20.28%
30d1+100.00%-62.78%-7.60%-55.18%-55.18%
60d1+100.00%-45.00%-11.46%-33.54%-33.54%
90d1+100.00%-21.55%-3.32%-18.23%-18.23%
180d1+100.00%-2.59%+5.66%-8.25%-8.25%
1y1+0.00%+65.52%+14.77%+50.74%+50.74%
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
SES · 801,635 shares · as of May 18, 2026
0200,409400,818601,226801,6352026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2025
2025
2026
2026
FLOW · 2 buys / 4 sellsCOVERAGE · 6 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
SES
SES AI CORP
PURCHASEGRANT
Stock grant
221,239801,635May 18, 2026May 20, 2026View →
SES
SES AI CORP
SALE
CHIEF TECHNOLOGY OFFICER
39,593$0.99$39.1K580,396Mar 27, 2026Mar 31, 2026View →
SES
SES AI CORP
SALE
CHIEF TECHNOLOGY OFFICER
35,063$1.88$65.9K619,989Feb 6, 2026Feb 10, 2026View →
SES
SES AI CORP
SALE
CHIEF TECHNOLOGY OFFICER
39,238$1.09$42.8K655,052Sep 3, 2025Sep 4, 2025View →
SES
SES AI CORP
PURCHASEGRANT
Stock grant
250,000694,290Mar 28, 2025Apr 1, 2025View →
SES
SES AI CORP
SALE10b5-1
10b5-1 plan
27,969$1.17$32.8K444,290Feb 10, 2025Feb 11, 2025View →
Other insiders · SES
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About this filer
CIK 0002039201
ROLE
CHIEF TECHNOLOGY OFFICER
PRIMARY
SES
COMPANIES
1
ACTIVE SINCE
Feb 2025
MARKETPEEL · /INSIDER/0002039201DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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