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LYEL
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Lyell Immunopharma, Inc.

LYEL · Healthcare · Lyell Immunopharma, Inc., a clinical-stage cell therapy company, develops chimeric antigen receptor (CAR) T-cell product candidates for pat…

Lyell Immunopharma, Inc. (LYEL), in the Healthcare sector, has 4 disclosed filings on Paydirt over the trailing twelve months from 3 corporate insiders: 2 purchases and 2 sales. Filers took a median of 3 days from execution to disclosure, and the most recent trade was executed Aug 21 and filed Aug 25. The most active filer was Lynn Seely with 3 filings.

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Filings, ttm
4
2 buys · 2 sells
Traders, ttm
3
3 insiders
Volume, ttmiDollar value disclosed in the window
$25.3M
estimated for Congress, as filed for insiders
Median delay
3d
execution to disclosure
Last traded
Aug 21
Filed Aug 25
ADViAverage daily dollar volume
$2.9M
market data
Share price · 12M
$14.53 (+10.3%)
$38.60$25.10$11.61Sep 22 2025Mar 12Aug 28

Adjusted for splits and dividends.

Volume by month
$25.0M$12.5M$0Oct 2024Apr 2025Oct 2025Apr 2026Feb 2026 · sells $174KMar 2026 · buys $25.0MAug 2026 · sells $149K
Buys $25.0M Sells $323K

Estimated for Congress, as filed for insiders · by filing month · past 24 months

Who filed
LS Lynn Seely President and CEO 3 filings AP ARCH Venture Fund XIII, L.P. 10% owner 1 filing AL ARCH Venture Partners IX, LLC 10% owner 1 filing CN Charles W. Newton Chief Financial Officer 1 filing SR Sumant Ramachandra Director 1 filing
Recent filings
Lynn SeelySALE President and CEO $149K
9,589 sh × $15.54
Exec Aug 21
Filed Aug 25 · 4:06 PM ET
ARCH Venture Partners IX, LLCPURCHASE 10% owner $12.5M
488,090 sh × $25.61
Exec Mar 6
Filed Mar 9 · 4:36 PM ET
ARCH Venture Fund XIII, L.P.PURCHASE 10% owner $12.5M
488,090 sh × $25.61
Exec Mar 6
Filed Mar 9 · 4:34 PM ET
Lynn SeelySALE President and CEO $174K
7,455 sh × $23.39
Exec Feb 11
Filed Feb 12 · 5:30 PM ET
Sumant RamachandraPURCHASE Director
200,000 sh · price not plausible
Exec Mar 21 2025
Filed Mar 25 2025 · 5:30 PM ET
Lynn SeelyPURCHASE President and CEO
175,000 sh · price not plausible
Exec Mar 14 2025
Filed Mar 18 2025 · 5:30 PM ET
Charles W. NewtonPURCHASE Chief Financial Officer
200,000 sh · price not plausible
Exec Mar 17 2025
Filed Mar 18 2025 · 5:30 PM ET