SEC Form 4 Filing for Atara Biotherapeutics, Inc.

This filing details transactions by Redmile Group, LLC and Jeremy Green, who are deemed directors by deputization. On July 22, 2026, they executed a cashless exercise of Pre-Funded Warrants to purchase 195,151 shares of Common Stock, with 60 shares withheld for exercise costs. This resulted in the issuance of 195,151 shares to certain private funds managed by Redmile Group, LLC. The filing also corrects previous disclosures regarding the terms of various Pre-Funded Warrants, clarifying their exercise prices and expiration dates. Specifically, warrants with exercise prices of \$0.0025 and \$0.0001 per share are held, with some having no expiration date. Redmile Group, LLC and Jeremy Green disclaim beneficial ownership except to the extent of their pecuniary interest.