Lyell Immunopharma, Inc. (LYEL) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-01

Lyell Immunopharma, Inc. (LYEL) has filed 14 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-01. 2 Form 8-K material event filings were reported by LYEL in the last 90 days. InsiderAlpha tracks every LYEL SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Lyell Immunopharma, Inc. (LYEL)

SEC CIK0001806952

90-Day SEC Filing Activity

Form 4 filings (90d)14
Form 8-K filings (90d)2
Latest Form 4 filing2026-07-01

Recent LYEL Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Innovative Cellular Therapeutics Holdings LtdInsiderJ — Other acquisition / disposition76.0K$0.00—SEC
Innovative Cellular Therapeutics Holdings LtdInsiderJ — Other acquisition / disposition66.5K$0.00—SEC
Shook DavidChief Medical OfficerS — Open-market sale2.0K$12.64$25KSEC
Bulis Veronica SanchezVP, Corporate ControllerS — Open-market sale217$18.91$4KSEC
Lee Gary K.Chief Scientific OfficerS — Open-market sale130$18.92$2KSEC
Hill Stephen J.Chief Operating OfficerS — Open-market sale89$18.92$2KSEC
Seely LynnPresident and CEOS — Open-market sale388$18.91$7KSEC
ARCH Venture Partners IX, LLC10% OwnerP — Open-market purchase488.1K$25.61$12.50MSEC
ARCH Venture Fund XIII, L.P.10% OwnerP — Open-market purchase488.1K$25.61$12.50MSEC
Seely LynnPresident and CEOS — Open-market sale7.5K$23.39$174KSEC
Hill Stephen J.Chief Operating OfficerS — Open-market sale1.2K$23.39$29KSEC
Lee Gary K.Chief Scientific OfficerS — Open-market sale1.7K$23.39$39KSEC
Bulis Veronica SanchezVP, Corporate ControllerS — Open-market sale254$23.12$6KSEC
Hill Stephen J.Chief Operating OfficerS — Open-market sale109$23.12$3KSEC
Seely LynnPresident and CEOS — Open-market sale438$23.12$10KSEC

All transactions sourced from SEC EDGAR Form 4 filings for Lyell Immunopharma, Inc. (LYEL). Updated in real time as new filings are submitted to the SEC.

Most-Active LYEL Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
Innovative Cellular Therapeutics Holdings Ltd2—
Hill Stephen J.1$2K
RIEFLIN WILLIAM JL1—
BRAWLEY OTIS W1—
Lee Gary K.1$2K

Recent LYEL Form 8-K Material Events

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LYEL insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

LYEL Insider Trading — FAQ

What is the latest insider trade for LYEL?
Lyell Immunopharma, Inc. (LYEL) had 14 insider filings in the last 90 days, with the most recent on 2026-07-01. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying LYEL stock?
0 insider purchases of LYEL were filed in the last 90 days.
How many insiders are selling LYEL stock?
0 insider sales of LYEL were filed in the last 90 days.
Where can I see LYEL SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every LYEL SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live LYEL dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.