2 insiders reported 2 Form 4 transactions for First Tracks Biotherapeutics, Inc. (TRAX) over the past 18 months (most recent 2026-04-22). Recent activity: ANAPTYSBIO, INC (Insider) Sell 100 shares, EcoR1 Capital, LLC (Insider) Buy 4.7M shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-22 | ANAPTYSBIO, INC | Insider | Sell | 100 | $0 |
| 2026-04-22 | EcoR1 Capital, LLC | Insider | Buy | 4.7M | $65.0M |
Source: SEC Form 4 filings · as of 2026-04-22
