Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies ARCH Venture Partners IX, LLC 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 in LYEL purchases and sales in the last 12 months
- Lynn Seely - $353K in LYEL purchases and sales in the last 12 months
- Gary K. Lee - $72K in LYEL purchases and sales in the last 12 months
- Stephen J. Hill - $51K in LYEL purchases and sales in the last 12 months
- David Shook - $31K in LYEL purchases and sales in the last 12 months
- Veronica Sanchez Bulis - $23K in LYEL purchases and sales in the last 12 months
More insiders (A-Z)
Browse nearby insider profiles in alphabetical order.
Frequently asked questions
What is ARCH Venture Partners IX, LLC?
ARCH Venture Partners IX, LLC is an investment firm, tracked as 10% Owner of Lyell Immunopharma, Inc. (LYEL). InsiderAlpha holds 2 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did ARCH Venture Partners IX, LLC last file a Form 4?
The most recent primary Form 4 on record is dated 9 March 2026, one of 2 filings going back to 2025.
Has ARCH Venture Partners IX, LLC been buying or selling stock?
Recorded transactions: 1 open-market purchase ($12.50M) and 0 open-market sales across all tracked filings.
