Aguirre Jarrad Mattieu Insider Trades & Stock Holdings

Chief Medical Officer · Lyell Immunopharma, Inc. · Latest filing Oct 12, 2026

Aguirre Jarrad Mattieu, Chief Medical Officer at Lyell Immunopharma, Inc. has 1 Form 4 trade on file since Oct 12, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($3.64K), net -$3.64K. Latest filing: disposed of 422 shares of $LYEL on Oct 12, 2026 at $8.63.

Trades on file

1

Open-market bought

$0

Open-market sold

$3.64K

Net open-market

-$3.64K

Latest filing

Oct 12, 2026

All insider trades by Aguirre Jarrad Mattieu

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 12, 2026	$LYEL	Sell (Open-market sale)	422	$8.63	$3.64K						Chief Medical Officer		Read

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Aguirre Jarrad Mattieu traded

• $LYEL

Frequently asked questions

Has Aguirre Jarrad Mattieu been buying or selling stock?

Aguirre Jarrad Mattieu has 0 open-market purchases and 1 open-market sale on file, net -$3.64K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Aguirre Jarrad Mattieu's latest insider trade?

disposed of 422 shares of $LYEL on Oct 12, 2026 at $8.63.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.