LYEL insider buying
3 cluster buysLyell Immunopharma, Inc.
When two or more insiders at Lyell Immunopharma, Inc. buy LYEL in a qualifying detection window, the grouped purchases provide a starting point for further research. Below is every cluster we've detected in LYEL plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Nov 4 – Nov 4, 2026Detected Nov 5, 20262 insidersTotal bought$50.0MMarket capUnknown
- Mar 6 – Mar 6, 2026Detected Mar 6, 20262 insidersTotal bought$25.0MMarket cap$302.6M
- Mar 14 – Mar 21, 2025Detected Mar 21, 2025Executive buyer3 insidersTotal bought$334.8KMarket cap$302.6M
All notable open-market buys in LYEL
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 4, 2026 | ARCH Venture Fund XIII, L.P.cluster 10% Owner | 2,321,262 | $10.77 | $25.0M | SEC ↗ |
| Nov 4, 2026 | 10% Owner | 2,321,262 | $10.77 | $25.0M | SEC ↗ |
| Mar 6, 2026 | 10% Owner | 488,090 | $25.61 | $12.5M | SEC ↗ |
| Mar 6, 2026 | BERNS PAUL Lcluster 10% Owner | 488,090 | $25.61 | $12.5M | SEC ↗ |
| Mar 31, 2025 | Director | 35,640 | $0.56 | $20.0K | SEC ↗ |
| Mar 21, 2025 | Ramachandra Sumantcluster Director | 200,000 | $0.58 | $116.0K | SEC ↗ |
| Mar 17, 2025 | Newton Charles W.cluster Chief Financial Officer | 200,000 | $0.56 | $112.0K | SEC ↗ |
| Mar 14, 2025 | Seely Lynncluster Director, President and CEO | 175,000 | $0.61 | $106.8K | SEC ↗ |
| Mar 14, 2025 | Director | 158,000 | $0.60 | $94.8K | SEC ↗ |
LYEL insider buying — FAQ
- Are insiders buying LYEL stock?
- Yes — 9 distinct insiders have bought LYEL (Lyell Immunopharma, Inc.) on the open market, including 3 cluster buys where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 5, 2026.
- How much LYEL stock have insiders bought?
- Insiders have bought a combined $75.4M of LYEL across 9 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in LYEL?
- A cluster buy is two or more distinct Lyell Immunopharma, Inc. insiders — officers, directors, or 10% owners — each buying LYEL on the open market within a rolling window. LYEL has 3 detected cluster buys to date.
- Where does this LYEL insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in LYEL
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy LYEL within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Transactions link to official filings; prices and market capitalizations may be cached market data. Read our methodology and data limits before interpreting the figures. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding LYEL.