MarketPeel
Insider Trading Intelligence
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Arch Venture Fund Xiii, L.p.

LYEL
10% OWNER · LYELL IMMUNOPHARMA, INC. · CIK 0002006772
FILING MIX · LIFETIME50%/50%
BUYS
3
SELLS
3
TOTAL VALUE
$32.50M
COMPANIES
2
ACTIVE SINCE
Mar 2026
HOLDINGS NOW
16,468,563
AVG SELL PX
TRADE KIND
SHOWING 6 / 6
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 3 pending
Forward-return performance of every backtestable P/S trade by Arch Venture Fund Xiii, L.p., 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+0.00%-5.39%-1.50%-3.89%-3.89%
14d1+0.00%-14.87%-3.54%-11.33%-11.33%
30d1+0.00%-3.43%-2.00%-1.43%-1.43%
60d1+0.00%-8.19%+7.64%-15.84%-15.84%
90d1+0.00%-23.64%
180d1(1 pending)
1y1(1 pending)
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
Not enough transaction history to chart holdings.
Trading cadence · quarterly flow
BUY SELL
2026
2026
FLOW · 3 buys / 3 sellsCOVERAGE · 2 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
KARD
KARDIGAN, INC.
PURCHASE
1,250,000$16.00$20.00M15,042,035Jun 22, 2026Jun 24, 2026View →
KARD
KARDIGAN, INC.
SALE
2,306,4010Jun 17, 2026Jun 22, 2026View →
KARD
KARDIGAN, INC.
PURCHASE
13,792,03513,792,035Jun 17, 2026Jun 22, 2026View →
KARD
KARDIGAN, INC.
SALE
5,148,5870Jun 17, 2026Jun 22, 2026View →
KARD
KARDIGAN, INC.
SALE
1,204,0000Jun 17, 2026Jun 22, 2026View →
LYEL
LYELL IMMUNOPHARMA, INC.
PURCHASE
488,090$25.61$12.50M1,426,528Mar 6, 2026Mar 9, 2026View →
Other insiders · LYEL
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About this filer
CIK 0002006772
ROLE
10% Owner
PRIMARY
LYEL
COMPANIES
2
ACTIVE SINCE
Mar 2026
MARKETPEEL · /INSIDER/0002006772DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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