MarketPeel
Insider Trading Intelligence
KB

Kevin M. Brennan

XLO
SVP, FINANCE AND ACCOUNTING · XILIO THERAPEUTICS, INC. · CIK 0001971303
FILING MIX · LIFETIME65%/35%
BUYS
13
SELLS
7
TOTAL VALUE
$2.9K
COMPANIES
1
ACTIVE SINCE
Apr 2023
HOLDINGS NOW
6,371
AVG SELL PX
$0.81
TRADE KIND
SHOWING 20 / 20
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by Kevin M. Brennan, 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+0.00%+2.93%+1.21%+1.72%+1.72%
14d2+50.00%+0.89%+1.22%-0.33%-0.33%
30d2+100.00%-23.31%+2.37%-25.67%-25.67%
60d2+100.00%-18.43%-0.28%-18.14%-18.14%
90d2+100.00%-20.61%-3.58%-17.04%-17.04%
180d2+50.00%-16.70%+7.64%-24.34%-24.34%
1y2(1 pending)+100.00%-37.20%+17.20%-54.40%-54.40%
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
XLO · 6,371 shares · as of Jan 2, 2026
032,92565,85098,775131,700202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 13 buys / 7 sellsCOVERAGE · 12 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
XLO
XILIO THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,826$0.64$1.2K6,371Jan 2, 2026Jan 5, 2026View →
XLO
XILIO THERAPEUTICS, INC.
SALE
SVP, FINANCE AND ACCOUNTING
5,00010,000Jan 1, 2026Jan 5, 2026View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASE
SVP, FINANCE AND ACCOUNTING
5,0008,197Jan 1, 2026Jan 5, 2026View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
95,22195,221Dec 31, 2025Jan 5, 2026View →
XLO
XILIO THERAPEUTICS, INC.
SALE
SVP, FINANCE AND ACCOUNTING
55,0000Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
55,00055,000Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
131,700131,700Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
SALE
SVP, FINANCE AND ACCOUNTING
25,0000Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
SALE
SVP, FINANCE AND ACCOUNTING
20,0000Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
20,00020,000Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
25,00025,000Nov 21, 2025Nov 25, 2025View →
XLO
XILIO THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
1,803$0.98$1.8K3,197Jan 2, 2025Jan 3, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
60,00060,000Jan 1, 2025Jan 3, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASE
SVP, FINANCE AND ACCOUNTING
5,0005,000Jan 1, 2025Jan 3, 2025View →
XLO
XILIO THERAPEUTICS, INC.
SALE
SVP, FINANCE AND ACCOUNTING
5,00015,000Jan 1, 2025Jan 3, 2025View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
26,00026,000Oct 1, 2024Oct 2, 2024View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
20,00020,000May 1, 2024May 3, 2024View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
20,00020,000Jan 1, 2024Jan 3, 2024View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
25,00025,000Aug 16, 2023Aug 18, 2023View →
XLO
XILIO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
55,00055,000Apr 1, 2023Apr 3, 2023View →
Other insiders · XLO
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About this filer
CIK 0001971303
ROLE
SVP, FINANCE AND ACCOUNTING
PRIMARY
XLO
COMPANIES
1
ACTIVE SINCE
Apr 2023
MARKETPEEL · /INSIDER/0001971303DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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