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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 6 disclosed filings on Paydirt over the trailing twelve months from 3 corporate insiders: 4 purchases and 2 sales. Filers took a median of 2 days from execution to disclosure, and the most recent trade was executed Nov 4 and filed Nov 5. The most active filer was ARCH Venture Fund XIII, L.P. with 2 filings. Data as of Nov 8 2026.

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Filings, ttm
6
4 buys · 2 sells
Traders, ttm
3
3 insiders
Volume, ttmiDollar value disclosed in the window
$75.3M
estimated for Congress, as filed for insiders
Median delay
2d
execution to disclosure
Last traded
Nov 4
Filed Nov 5
ADViAverage daily dollar volume
$2.9M
market data
Share price · 12M
$14.86 (-16.0%)
$38.60$23.05$7.51Nov 10 2025May 12Nov 6

Adjusted for splits and dividends.

Volume by month
$50.0M$25.0M$0Dec 2024Jun 2025Dec 2025Jun 2026Feb 2026 · sells $174KMar 2026 · buys $25.0MAug 2026 · sells $149KNov 2026 · buys $50.0M
Buys $75.0M Sells $323K

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

Who filed · past 24 months
LS Lynn Seely President and CEO 3 filings · 1 buy, 2 sales AP ARCH Venture Fund XIII, L.P. 10% owner 2 filings · 2 buys, 0 sales AL ARCH Venture Partners IX, LLC 10% owner 2 filings · 2 buys, 0 sales CN Charles W. Newton Chief Financial Officer 1 filing · 1 buy, 0 sales SR Sumant Ramachandra Director 1 filing · 1 buy, 0 sales
Recent filings
ARCH Venture Partners IX, LLCPURCHASE 10% owner $25.0M
2,321,262 sh × $10.77
Exec Nov 4
Filed Nov 5 · 5:35 PM ET ARCH Venture Fund XIII, L.P.PURCHASE 10% owner $25.0M
2,321,262 sh × $10.77
Exec Nov 4
Filed Nov 5 · 5:34 PM ET 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