Lyell Immunopharma, Inc (LYEL) insider trading
Every open-market stock purchase and sale by Lyell Immunopharma, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Lynn Seely (CEO) and 4 others sold $211K in the last 90 days.
- Last insider buy: ARCH Venture Fund XIII L.P. (10% owner), $12.5M, 7 months ago.
Last 12 months: insiders bought $25M (2 buys) and sold $604K (25 sales). Last close $11.96 on Sep 11, 2026.
Recent LYEL insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 10, 2026 | David Shook (C-suite exec) | Sold | $6.3K |
| Sep 10, 2026 | Jarrad Mattieu Aguirre (C-suite exec) | Bought (not open market) | — |
| Aug 21, 2026 | Lynn Seely (CEO) | Sold | $149K |
| Aug 21, 2026 | Gary K. Lee (C-suite exec) | Sold | $22.6K |
| Aug 21, 2026 | Stephen J. Hill (COO) | Sold | $15.4K |
| Aug 10, 2026 | Veronica Sanchez Bulis (VP) | Sold | $8.9K |
| Aug 10, 2026 | Lynn Seely (CEO) | Sold | $5.6K |
| Aug 10, 2026 | Gary K. Lee (C-suite exec) | Sold | $1.9K |
| Aug 10, 2026 | Stephen J. Hill (COO) | Sold | $1.3K |
| Jun 15, 2026 | Innovative Cellular Therapeutics Holdings Ltd (Insider) | Sold (not open market) | — |
| Jun 10, 2026 | David Shook (C-suite exec) | Sold | $25K |
| Jun 10, 2026 | Otis W Brawley (Insider) | Bought (not open market) | — |
| Jun 10, 2026 | Sumant Ramachandra (Insider) | Bought (not open market) | — |
| Jun 10, 2026 | William Jl Rieflin (Insider) | Bought (not open market) | — |
| Jun 10, 2026 | Richard Klausner (Insider) | Bought (not open market) | — |
| Jun 10, 2026 | Elizabeth G Nabel (Insider) | Bought (not open market) | — |
| Jun 10, 2026 | Cathy Friedman (Insider) | Bought (not open market) | — |
| Jun 10, 2026 | Mark Bachleda (Insider) | Bought (not open market) | — |
| May 11, 2026 | Lynn Seely (CEO) | Sold | $7.3K |
| May 11, 2026 | Veronica Sanchez Bulis (VP) | Sold | $4.1K |
| May 11, 2026 | Gary K. Lee (C-suite exec) | Sold | $2.5K |
| May 11, 2026 | Stephen J. Hill (COO) | Sold | $1.7K |
| Mar 9, 2026 | Smital Shah (Officer) | Bought (not open market) | — |
| Mar 6, 2026 | ARCH Venture Fund XIII L.P. (10% owner) | Bought | $12.5M |
| Mar 6, 2026 | ARCH Venture Partners IX LLC (10% owner) | Bought | $12.5M |
Who's trading LYEL
- David Shook, C-suite exec: sold $31.3K (2 sales), last Sep 10, 2026
- Jarrad Mattieu Aguirre, C-suite exec: other filings, last Sep 10, 2026
- Lynn Seely, CEO: sold $353K (6 sales), last Aug 21, 2026
- Gary K. Lee, C-suite exec: sold $71.7K (6 sales), last Aug 21, 2026
- Stephen J. Hill, COO: sold $51.3K (6 sales), last Aug 21, 2026
- Veronica Sanchez Bulis, VP: sold $96.9K (6 sales), last Aug 10, 2026
- Innovative Cellular Therapeutics Holdings Ltd, Insider: other filings, last Jun 15, 2026
- Elizabeth G Nabel, Insider: other filings, last Jun 10, 2026
- William Jl Rieflin, Insider: other filings, last Jun 10, 2026
- Otis W Brawley, Insider: other filings, last Jun 10, 2026
- Mark Bachleda, Insider: other filings, last Jun 10, 2026
- Cathy Friedman, Insider: other filings, last Jun 10, 2026
- Richard Klausner, Insider: other filings, last Jun 10, 2026
- Sumant Ramachandra, Insider: other filings, last Jun 10, 2026
- Smital Shah, Officer: other filings, last Mar 9, 2026
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