Redmile Group, LLC - 16 May 2025 SCHEDULE 13D Report for Atara Biotherapeutics, Inc. Common Stock, par value $0.0001 per share (ATRA)

Filing Manager
Redmile Group, LLC
Reporting Manager
Redmile Group, LLC
Security
Atara Biotherapeutics, Inc. Common Stock, par value $0.0001 per share
Symbol
ATRA
Shares outstanding
7.12M shares
Disclosed Ownership
705K shares
Ownership
9.9%
Form type
SCHEDULE 13D
Filing time
23 May 2025, 16:05:24 UTC
Date of event
16 May 2025
Previous filing
15 May 2025
Next filing
14 Nov 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Redmile Group, LLC 9.9% 705K 0 705K /s/ Jeremy C. Green Managing Member 0001425738
Jeremy C. Green 9.9% 705K 0 705K /s/ Jeremy C. Green Jeremy C. Green 0001650527
RedCo I, L.P. 5% 347K 0 347K /s/ Jeremy C. Green Managing Member of RedCo I (GP), LLC, general partner of RedCo I, L.P 0001813157
Redmile Biopharma Investments II, L.P. 5.8% 406K 0 406K /s/ Jeremy C. Green Managing Member of Redmile Biopharma Investments II (GP), LLC, general partner of Redmile Biopharma Investments II, L.P. 0001772230