Company: ATRA
Filing Date: 2025-11-14
Form Type: SCHEDULE 13D/A
Source: 0001104659-25-112574
Chunk: 0

Company: Atara Biotherapeutics, Inc.
Filing Date: 2025-11-14
Form: SCHEDULE 13D/A
Chunk 0
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 shares (See Instructions) |
| 13                                                                 |                                                                                9.9 % |
| 14                                                                 |                                                                               IA, OO |

Comment for Type of Reporting Person: Redmile Group, LLC's beneficial ownership of the Issuer's common stock ("Common Stock") is comprised of 441,701 shares of Common Stock owned by certain private investment vehicles managed by Redmile Group, LLC (the "Redmile Funds"), including RedCo I, L.P. ("RedCo I"), Redmile Biopharma Investments II, L.P. ("RBI II") and Redmile Strategic Long Only Trading Sub, Ltd. ("Redmile Long Only"). Subject to the Beneficial Ownership Blocker (as defined below), Redmile Group, LLC may also be deemed to beneficially own 3,412,843 shares of Common Stock issuable upon exercise of certain pre-funded warrants to purchase Common Stock (the "Warrants") held directly by the Redmile Funds. Pursuant to the terms of the Warrants, the Issuer may not effect any exercise of the Warrants, and a holder of a Warrants does not have the right to exercise the Warrants held by such holder, to the extent that after giving effect to such issuance after exercise, the holder (together with the holder's affiliates, and any other persons acting as a group together with the holder or any of the holder's affiliates), would beneficially own in excess of 9.99% (the "Beneficial Ownership Limitation") of the number of shares of Common Stock outstanding immediately after giving effect to the issuance of shares of Common Stock issued upon exercise of the Warrant (the "Beneficial Ownership Blocker"). The Beneficial Ownership Limitation may be changed at a holder's election upon 61 days' notice to the Issuer. The 751,223 shares of Common Stock reported as beneficially owned by Redmile Group, LLC in this Schedule 13D represent 9.99% of the outstanding shares of Common Stock (calculated in accordance with the footnote below) and includes 309,522 shares of Common Stock that could be issued upon exercise of certain of the Warrants directly held by the Redmile Funds under the Beneficial Ownership Blocker. The reported securities may be deemed beneficially owned by Redmile Group, LLC as investment manager of the Redmile Funds. The reported securities may also be deemed beneficially owned by Jeremy C. Green as the principal of Redmile Group, LLC. Redmile Group, LLC and Mr. Green each dis