EcoR1 Capital, LLC
Insider trading activity for EcoR1 Capital, LLC sourced from SEC EDGAR Form 4 filings.
Overview
- Company: Atara Biotherapeutics, Inc.
- Total insider trades: 2
- Total buy volume: $4.7M
- Total sell volume: $65.0M
- Last trade: May 11, 2026
Recent Trades
| Date | Insider | Ticker / Company | Type | Shares | Value |
|---|---|---|---|---|---|
| May 7, 2026 | EcoR1 Capital, LLC | ATRA Atara Biotherapeutics, Inc. | BUY | 507,407 | $4.7M |
| Apr 20, 2026 | EcoR1 Capital, LLC | TRAX First Tracks Biotherapeutics, Inc. | SELL | 4,705,575 | $65.0M |