MarketPeel
Insider Trading Intelligence
MD

Mary Dibiase

XFOR
CHIEF OPERATING OFFICER · X4 PHARMACEUTICALS, INC · CIK 0001880179
FILING MIX · LIFETIME32%/68%
BUYS
8
SELLS
17
TOTAL VALUE
$143.9K
COMPANIES
1
ACTIVE SINCE
Sep 2021
HOLDINGS NOW
1,140,980
AVG SELL PX
$0.70
TRADE KIND
SHOWING 25 / 25
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
16 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by Mary Dibiase, 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
7d16+62.50%+0.51%+0.18%+0.33%-1.58%
14d16+68.75%+0.31%+0.16%+0.15%-3.60%
30d16+62.50%-0.57%+1.37%-1.94%-4.70%
60d16+62.50%+0.85%+2.63%-1.77%-7.88%
90d16+56.25%+4.96%+0.96%+3.99%-9.21%
180d16+87.50%-31.29%+5.20%-36.49%-35.65%
1y16+75.00%-20.48%+18.32%-38.80%-72.41%
2y16(3 pending)+100.00%-60.91%+41.73%-102.64%-114.98%
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
XFOR · 1,140,980 shares · as of Feb 12, 2025
0337,500675,0001,012,5001,350,0002022202320242025SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
FLOW · 8 buys / 17 sellsCOVERAGE · 15 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
650,0001,140,980Feb 12, 2025Feb 14, 2025View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
22,258$0.45$10.1K490,980Jan 24, 2025Jan 27, 2025View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
61,178513,238Jan 23, 2025Jan 27, 2025View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
67,695$0.57$38.3K452,060Oct 7, 2024Oct 8, 2024View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
230,645519,755Oct 4, 2024Oct 8, 2024View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
2,642$0.66$1.7K289,110Sep 9, 2024Sep 11, 2024View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
15,409$0.88$13.6K291,752Mar 11, 2024Mar 11, 2024View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
428,248428,248Feb 13, 2024Feb 16, 2024View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
3,683$1.01$3.7K307,161Feb 12, 2024Feb 12, 2024View →
XFOR
X4 PHARMACEUTICALS, INC
SALE10b5-1
10b5-1 plan
67,695$0.73$49.4K310,844Nov 1, 2023Nov 3, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
230,645378,539Oct 31, 2023Nov 2, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
2,642$1.25$3.3K147,894Sep 8, 2023Sep 12, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
464$1.89$877150,536Jun 30, 2023Jul 5, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
857$1.93$1.7K151,000Jun 23, 2023Jun 26, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
857$2.23$1.9K151,857Jun 15, 2023Jun 16, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
18,192$0.84$15.3K152,714Mar 10, 2023Mar 13, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
4,348$0.93$4.0K170,906Feb 13, 2023Feb 15, 2023View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
1,350,0001,350,000Nov 7, 2022Nov 9, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
1,713177,896Aug 17, 2022Aug 19, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
1,578179,609Jun 30, 2022Jul 1, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
856181,187Jun 24, 2022Jun 27, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
856182,043Jun 16, 2022Jun 17, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
105,000182,899Mar 1, 2022Mar 1, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
SALE
Chief Operating Officer
12,54577,899Feb 11, 2022Feb 14, 2022View →
XFOR
X4 PHARMACEUTICALS, INC
PURCHASEGRANT
Stock grant
27,00090,444Sep 8, 2021Sep 10, 2021View →
Other insiders · XFOR
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About this filer
CIK 0001880179
ROLE
Chief Operating Officer
PRIMARY
XFOR
COMPANIES
1
ACTIVE SINCE
Sep 2021
MARKETPEEL · /INSIDER/0001880179DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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