ATRA ATARA BIOTHERAPEUTICS INC Business Restructuring 8-K Filing 2025 - Management Changes On May 12, 2025, Atara Biotherapeutics, Inc. announced plans to cut its workforce by approximately 30%, retaining only about 23 employees, with expected severance costs of $1.4 million. The layoffs are set to be completed by August 2025 and may incur additional unanticipated expenses.Get access to all SEC 8-K filings of the ATARA BIOTHERAPEUTICS INC