Summary
Latest filing:
Jarrad Mattieu Aguirre is Chief Medical Officer of Lyell Immunopharma, Inc. (LYEL). 1 SEC Form 4 filing on record, dated 10 September 2026.
Trading Pattern
InsiderAlpha's records for Jarrad Mattieu Aguirre go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Jarrad Mattieu Aguirre files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- ARCH Venture Fund XIII, L.P. - $12.50M of LYEL open-market activity in the last 12 months
- ARCH Venture Partners IX, LLC - $12.50M of LYEL open-market activity in the last 12 months
- Lynn Seely - $353K of LYEL open-market activity in the last 12 months
- Gary K. Lee - $72K of LYEL open-market activity in the last 12 months
- Stephen J. Hill - $51K of LYEL open-market activity in the last 12 months
- David Shook - $31K of LYEL open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Jarrad Mattieu Aguirre?
Jarrad Mattieu Aguirre is a corporate insider, tracked as Chief Medical Officer of Lyell Immunopharma, Inc. (LYEL). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Jarrad Mattieu Aguirre submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Jarrad Mattieu Aguirre's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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