LYEL insider buying – Lyell Immunopharma, Inc.
8 insider purchases since 2016 worth $38.2M by 8 different insiders. Last 12 months: 2 purchases, $37.5M. Most recent filing: 2026-11-05.
Small company Public float $129M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| ARCH Venture Partners IX, LLC (+4 related) 10% Owner | $25.0M 1× · 2,321,262 sh | 2026-11-04 2026-11-04 | – | – | Holds - never sold |
| BERNS PAUL L 10% Owner | $12.5M 1× · 488,090 sh | 2026-03-06 2026-03-06 | – | 1,426,528 shares as of 2026-03-09 | Holds - never sold |
| FRIEDMAN CATHY Director | $300,016 1× · 17,648 sh | 2021-06-21 2021-06-21 | – | 16,818 shares as of 2026-06-12 | Holds - never sold |
| Ramachandra Sumant Director | $116,000 1× · 200,000 sh | 2025-03-21 2025-03-21 | – | 10,000 shares as of 2026-06-12 | Holds - never sold |
| Newton Charles W. CFO | $112,000 1× · 200,000 sh | 2025-03-17 2025-03-17 | – | 25,306 shares as of 2025-08-22 | Holds - never sold |
| Seely Lynn CEO | $106,750 1× · 175,000 sh | 2025-03-14 2025-03-14 | 3× · $399,874 last 2026-08-21 | 63,899 shares as of 2026-08-25 | Sold part |
| Klausner Richard Director | $94,800 1× · 158,000 sh | 2025-03-14 2025-03-14 | 2× · $203,326 last 2023-08-15 | 190,557 shares as of 2026-06-12 | Holds (sold earlier) |
| BRAWLEY OTIS W Director | $19,958 1× · 35,640 sh | 2025-03-31 2025-03-31 | – | 1,782 shares as of 2026-06-12 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 2 | $37.5M | 2 | 3 | $397,566 |
| 2025 | 5 | $449,508 | 5 | 1 | $76,489 |
| 2023 | 0 | – | – | 1 | $132,286 |
| 2022 | 0 | – | – | 1 | $71,040 |
| 2021 | 1 | $300,016 | 1 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-05 | ARCH Venture Partners IX, LLC (+4 related) | 10% Owner | 2,321,262 | $10.77 | $25.0M | +163% | SEC |
| 2026-03-09 | BERNS PAUL L | 10% Owner | 488,090 | $25.61 | $12.5M | +52.0% | SEC |
| 2025-04-02 | BRAWLEY OTIS W | Director | 35,640 | $0.56 | $19,958 | SEC | |
| 2025-03-25 | Ramachandra Sumant | Director | 200,000 | $0.58 | $116,000 | SEC | |
| 2025-03-18 | Newton Charles W. | CFO | 200,000 | $0.56 | $112,000 | SEC | |
| 2025-03-18 | Seely Lynn | CEO | 175,000 | $0.61 | $106,750 | +32.6% | SEC |
| 2025-03-18 | Klausner Richard | Director | 158,000 | $0.60 | $94,800 | +23.1% | SEC |
| 2021-06-23 | FRIEDMAN CATHY | Director | 17,648 | $17.00 | $300,016 | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-25 | Seely Lynn | CEO | 9,589 | $15.54 | $149,013 | Sale | SEC |
| 2026-02-12 | Seely Lynn | CEO | 7,455 | $23.39 | $174,372 | Sale | SEC |
| 2026-01-06 | Bulis Veronica Sanchez | Officer | 2,072 | $35.80 | $74,181 | Sale | SEC |
| 2025-08-22 | Seely Lynn | CEO | 7,257 | $10.54 | $76,489 | Sale | SEC |
| 2023-08-17 | Klausner Richard | Director | 58,020 | $2.28 | $132,286 | Sale | SEC |
| 2022-09-27 | Klausner Richard | Director | 11,100 | $6.40 | $71,040 | Sale | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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