ARCH Venture Partners IX, LLC insider trades: Lyell Immunopharma (LYEL) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where ARCH Venture Partners IX, LLC reports to the SEC
and 1 more company
Open-market buys and sales
7 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Nov 4, 2026 | LYEL | ↑ Buy | 2,321,262 | $10.77 | $25.0M | Indirect | Nov 5, 2026 (1d) |
| Jul 1, 2026 | BOLD | ↓ Sell | 16,000 | $2.49 | $40K | Indirect | Jul 6, 2026 (5d) |
| Mar 6, 2026 | LYEL | ↑ Buy | 488,090 | $25.61 | $12.5M | Indirect | Mar 9, 2026 (3d) |
| Apr 2, 2024 | BOLD | ↑ Buy | 200,000 | $16.00 | $3.2M | Indirect | Apr 4, 2024 (2d) |
| Feb 8, 2024 | SANA | ↑ Buy | 1,090,909 | $5.50 | $6.0M | Indirect | Feb 12, 2024 (4d) |
| Oct 16, 2019 | VIR | ↑ Buy | 1,000,000 | $20.00 | $20.0M | Indirect | Oct 18, 2019 (2d) |
| Jul 2, 2019 | KRTX | ↑ Buy | 100,000 | $16.00 | $1.6M | Indirect | Jul 2, 2019 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other LYEL insiders
Open-market trades in the last 12 months
About ARCH Venture Partners IX, LLC's insider trades
ARCH Venture Partners IX, LLC is a 10% owner of Lyell Immunopharma (LYEL). Since Jul 2, 2019, it has reported 6 open-market purchases worth $68.3M and 1 sale worth $40K on SEC Form 4. In the last 12 months: 2 buys ($37.5M) and 1 sale ($40K).
Its filings also include other transactions (21 filings), conversions (7 filings), option exercises (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every LYEL insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.