MarketPeel
Insider Trading Intelligence
JJ

Jeffrey Alan Jones

CGEM
CHIEF MEDICAL OFFICER · CULLINAN THERAPEUTICS, INC. · CIK 0001914647
FILING MIX · LIFETIME42%/58%
BUYS
8
SELLS
11
TOTAL VALUE
$309.6K
COMPANIES
1
ACTIVE SINCE
Feb 2022
HOLDINGS NOW
159,968
AVG SELL PX
$11.25
TRADE KIND
SHOWING 19 / 19
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
11 backtested trades · 8 horizons · 10 pending
Forward-return performance of every backtestable P/S trade by Jeffrey Alan Jones, 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
7d11+18.18%+4.23%-0.04%+4.27%+4.48%
14d11+27.27%+4.83%-0.42%+5.24%+7.73%
30d11+63.64%+3.49%+0.57%+2.91%+1.13%
60d11+45.45%+18.73%+3.25%+15.48%+2.15%
90d11+36.36%+15.08%+4.60%+13.01%+7.92%
180d11(2 pending)+55.56%+16.56%+10.14%+6.42%-19.18%
1y11(3 pending)+12.50%+52.14%+24.93%+27.21%+5.70%
2y11(5 pending)+66.67%-14.81%+42.40%-57.21%-57.07%
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
CGEM · 159,968 shares · as of Feb 24, 2026
075,000150,000225,000300,0002023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 8 buys / 11 sellsCOVERAGE · 17 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
4,582$14.47$66.3K159,968Feb 24, 2026Feb 25, 2026View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
4,982$13.62$67.9K164,550Feb 20, 2026Feb 23, 2026View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
300,000300,000Feb 18, 2026Feb 19, 2026View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
4,632$9.67$44.8K169,532Dec 18, 2025Dec 19, 2025View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
4,895$8.53$41.8K174,164Feb 25, 2025Feb 27, 2025View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
130,000130,000Feb 19, 2025Feb 21, 2025View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
65,000179,059Feb 19, 2025Feb 21, 2025View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
4,632$11.41$52.9K114,059Dec 18, 2024Dec 20, 2024View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
62,500118,691Feb 22, 2024Feb 23, 2024View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
125,000125,000Feb 22, 2024Feb 23, 2024View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
1,860$8.50$15.8K56,191Dec 21, 2023Dec 22, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
386$8.22$3.2K58,051Dec 18, 2023Dec 20, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
387$12.94$5.0K58,437Jun 20, 2023Jun 21, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
394$8.76$3.5K58,824May 18, 2023May 19, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
392$10.71$4.2K59,218Apr 18, 2023Apr 20, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
SALE
Chief Medical Officer
390$11.32$4.4K59,610Mar 20, 2023Mar 27, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
60,00060,000Feb 17, 2023Feb 21, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
120,000120,000Feb 17, 2023Feb 21, 2023View →
CGEM
CULLINAN THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
215,000215,000Feb 28, 2022Mar 2, 2022View →
Other insiders · CGEM
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About this filer
CIK 0001914647
ROLE
Chief Medical Officer
PRIMARY
CGEM
COMPANIES
1
ACTIVE SINCE
Feb 2022
MARKETPEEL · /INSIDER/0001914647DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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