MarketPeel
Insider Trading Intelligence
CN

Charles W. Newton

LYEL
CHIEF FINANCIAL OFFICER · LYELL IMMUNOPHARMA, INC. · CIK 0001866219
FILING MIX · LIFETIME74%/26%
BUYS
26
SELLS
9
TOTAL VALUE
$135.2K
COMPANIES
4
ACTIVE SINCE
Mar 2022
HOLDINGS NOW
109,241
AVG SELL PX
$10.41
TRADE KIND
SHOWING 35 / 35
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 5 pending
Forward-return performance of every backtestable P/S trade by Charles W. Newton, 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
7d3+33.33%+4.49%+0.75%+3.74%+2.91%
14d3+33.33%+3.81%+0.11%+3.70%+3.31%
30d3+0.00%+11.43%-0.72%+12.14%+20.97%
60d3+0.00%+30.84%+3.13%+27.71%+53.36%
90d3+0.00%+44.24%+6.59%+37.65%+59.95%
180d3+33.33%+86.20%+10.95%+75.25%+106.05%
1y3(2 pending)+100.00%+94.78%+18.63%+76.15%+76.15%
2y3(3 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
LYEL · 15,306 shares · as of Aug 21, 2025
0903,0001,806,0002,709,0003,612,000202320242025SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 26 buys / 9 sellsCOVERAGE · 18 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
NVAX
NOVAVAX INC
PURCHASEGRANT
Stock grant
21,27021,270Jun 18, 2026Jun 23, 2026View →
NVAX
NOVAVAX INC
PURCHASEGRANT
Stock grant
14,18014,180Jun 18, 2026Jun 23, 2026View →
KROS
KEROS THERAPEUTICS, INC.
SALE10b5-1
10b5-1 plan
550$10.04$5.5K12,665Jun 11, 2026Jun 15, 2026View →
CHRS
COHERUS ONCOLOGY, INC.
PURCHASEGRANT
Stock grant
60,00060,000Jun 5, 2026Jun 9, 2026View →
CHRS
COHERUS ONCOLOGY, INC.
PURCHASEGRANT
Stock grant
30,00030,000Jun 5, 2026Jun 9, 2026View →
NVAX
NOVAVAX INC
PURCHASE
9,5209,520Apr 25, 2026Apr 28, 2026View →
NVAX
NOVAVAX INC
SALE
9,52019,040Apr 25, 2026Apr 28, 2026View →
KROS
KEROS THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
14,78814,788Mar 9, 2026Mar 11, 2026View →
KROS
KEROS THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
13,21513,215Mar 9, 2026Mar 11, 2026View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
1,453$10.54$15.3K15,306Aug 21, 2025Aug 22, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
8,00016,759Aug 20, 2025Aug 22, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
136$10.34$1.4K8,759Aug 12, 2025Aug 13, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
131$10.53$1.4K8,895Aug 11, 2025Aug 13, 2025View →
CHRS
COHERUS ONCOLOGY, INC.
PURCHASEGRANT
Stock grant
112,000112,000Jun 12, 2025Jun 13, 2025View →
NVAX
NOVAVAX INC
PURCHASEGRANT
Stock grant
42,84042,840Apr 25, 2025Apr 29, 2025View →
NVAX
NOVAVAX INC
PURCHASEGRANT
Stock grant
28,56028,560Apr 25, 2025Apr 29, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASE
Chief Financial Officer
200,000$0.56$111.6K200,000Mar 17, 2025Mar 18, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
56,25056,250Feb 10, 2025Feb 26, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
450,000450,000Feb 10, 2025Feb 26, 2025View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
112,500172,725Feb 10, 2025Feb 26, 2025View →
CHRS
COHERUS ONCOLOGY, INC.
PURCHASEGRANT
Stock grant
112,000112,000Jun 3, 2024Jun 5, 2024View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
40,00048,729Feb 9, 2024Feb 13, 2024View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
400,000400,000Feb 9, 2024Feb 13, 2024View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
500,0000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
500,000500,000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
190,000190,000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
516,0000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
190,0000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
SALE
Chief Financial Officer
3,612,0000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
3,612,0003,612,000Nov 16, 2023Nov 20, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
516,000516,000Nov 16, 2023Nov 20, 2023View →
CHRS
COHERUS ONCOLOGY, INC.
PURCHASEGRANT
Stock grant
38,25038,250Jun 7, 2023Jun 9, 2023View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
700,000700,000Feb 24, 2023Feb 28, 2023View →
CHRS
COHERUS ONCOLOGY, INC.
PURCHASEGRANT
Stock grant
54,00054,000May 4, 2022May 6, 2022View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASEGRANT
Stock grant
500,000500,000Mar 16, 2022Mar 18, 2022View →
Other insiders · LYEL
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About this filer
CIK 0001866219
ROLE
Chief Financial Officer
PRIMARY
LYEL
COMPANIES
4
ACTIVE SINCE
Mar 2022
MARKETPEEL · /INSIDER/0001866219DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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