ARCH VENTURE PARTNERS IX, LLC purchased 52.0% of their position (488.09K shares) of LYELL IMMUNOPHARMA, INC. on the open market
Open‑market purchase worth $12.50M — a major conviction buy. The strongest form of insider conviction signal.
P · 1 purchase
Filed: 3/9/2026ACC: 0001012975-26-000235
10% Owner
Since Jun 2021
+488.09K
Net shares
Net buyer
$12.50M
Total acquired
1
Open market trades
1B · 0S
1
Total transactions
488.09K acquired
Non-Derivative Transactions1
Common Stock
Indirect
Shares
+488.09K
Price / share
$25.61
Trade value
$12.50M
% of position
52.0%
3/6/2026
938.44K→1.43M
Total
Net shares
+488.09K
Net value
$12.50M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Indirect | 3/6/2026 | P · Purchase | +488.09K | $25.61 | $12.50M | 52.0% | 938.44K | 1.43M |
| Total | +488.09K | $12.50M | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2
Common Stock
IndirectShares owned910.32K
Common Stock
IndirectShares owned910.32K
Total
1.82M indirect1.82M
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 910.32K | Indirect |
| Common Stock | 910.32K | Indirect |
| Total | 1.82M | 1.82M indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported