Company profile
Lyell Immunopharma, Inc. Insider Trading
LYELEvery SEC Form 4 insider trading filing for Lyell Immunopharma, Inc. (LYEL) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001806952
- Filings
- 108
- Insiders
- 33
- Last filing
- 2026-09-10
Activity summary
Mixed insider activity over the last 30 days: 1 purchase and 1 sale (2 transactions total).
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Lyell Immunopharma, Inc. insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $25.0M.
90 day insight
Over the last 90 days, Lyell Immunopharma, Inc. insiders bought $0 (1 transaction) and sold $211K (8 transactions).
- Most active insider: Innovative Cellular Therapeutics Holdings Ltd with 5 transactions totaling $274.
- Largest single sale: $149K by Lynn Seely on Aug 21, 2026.
- 20% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bearish — sales outpace buys.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 10, 2026 | Jarrad Mattieu Aguirre | LYEL | Award | 47,500 | — | — |
| Sep 10, 2026 | David Shook | LYEL | Sale | 500 | $12.70 | $6K |
| Aug 21, 2026 | Gary K. Lee | LYEL | Sale | 1,457 | $15.54 | $23K |
| Aug 21, 2026 | Stephen J. Hill | LYEL | Sale | 989 | $15.54 | $15K |
| Aug 21, 2026 | Lynn Seely | LYEL | Sale | 9,589 | $15.54 | $149K |
45 more transactions hidden
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Query this yourself
The same rows, over the API.
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Lyell Immunopharma, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →