0000905148-24-000878.txt : 20240304 0000905148-24-000878.hdr.sgml : 20240304 20240304201348 ACCESSION NUMBER: 0000905148-24-000878 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20240304 DATE AS OF CHANGE: 20240304 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Atara Biotherapeutics, Inc. CENTRAL INDEX KEY: 0001604464 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 460920988 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-36548 FILM NUMBER: 24717786 BUSINESS ADDRESS: STREET 1: 2380 CONEJO SPECTRUM ST STREET 2: SUITE 200 CITY: THOUSAND OAKS STATE: CA ZIP: 91320 BUSINESS PHONE: 805-623-4244 MAIL ADDRESS: STREET 1: 2380 CONEJO SPECTRUM ST STREET 2: SUITE 200 CITY: THOUSAND OAKS STATE: CA ZIP: 91320 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Nguyen Tran CENTRAL INDEX KEY: 0001457013 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O PROTHENA CORPORATION PLC STREET 2: 650 GATEWAY BOULEVARD CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94080 144 1 primary_doc.xml 144 0001457013 XXXXXXXX LIVE 0001604464 Atara Biotherapeutics, Inc. 001-36548 c/o Atara Biotherapeutics, Inc. 2380 Conejo Spectrum St., Suite 200 Thousand Oaks CA 91320 805-623-4211 Nguyen Tran Officer Common Stock Morgan Stanley Smith Barney LLC
Executive Services 200 W Civic Center Drive, 4th Floor Sandy UT 84070
10728 8268.07 101922250 03/04/2024 NASDAQ Common Stock 03/01/2024 Settlement of vested RSUs issued under an S-8 Registration Plan Issuer N 23791 03/01/2024 Equity compensation for services rendered Y Shares sold automatically to satisfy tax withholding obligations in connection with the vesting of previously granted restricted stock units, pursuant to a sale-to-cover provision in the award agreement. Exhibit List: Exhibit 24 - Power of Attorney. 03/04/2024 /s/ Jeff Kiekhofer, Attorney-in-Fact for AnhCo Nguyen poa_nguyen.htm EX-24.0 poa_nguyen 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cnkgMjEsIDIwMjQuPC9kaXY+DQogICAgPGRpdj48YnI+DQogICAgPC9kaXY+DQogICAgPGRpdj48YnI+DQogICAgPC9kaXY+DQogICAgPGRpdj48YnI+DQogICAgPC9kaXY+DQogICAgPHRhYmxlIHN0eWxlPSJib3JkZXItY29sbGFwc2U6IGNvbGxhcHNlOyB3aWR0aDogMzAlOyBjb2xvcjogIzAwMDAwMDsgZm9udC1mYW1pbHk6ICdUaW1lcyBOZXcgUm9tYW4nLCBUaW1lcywgc2VyaWY7IGZvbnQtc2l6ZTogMTBwdDsgdGV4dC1hbGlnbjogbGVmdDsiIGlkPSJ6ZjQ4YjkzYmVkN2Q2NDg3YWFkZWQxMDA3ZTdjOTFiZjgiIGFsaWduPSJsZWZ0IiBib3JkZXI9IjAiIGNlbGxwYWRkaW5nPSIyIiBjZWxsc3BhY2luZz0iMCI+DQogICAgICANCiAgICAgICAgPHRyPg0KICAgICAgICAgIDx0ZCBzdHlsZT0id2lkdGg6IDE1JTsgdmVydGljYWwtYWxpZ246IHRvcDsiPg0KICAgICAgICAgICAgPGRpdiBzdHlsZT0iY29sb3I6ICMwMDAwMDA7Ij5TaWduYXR1cmU6PC9kaXY+DQogICAgICAgICAgPC90ZD4NCiAgICAgICAgICA8dGQgc3R5bGU9IndpZHRoOiA4NSU7IHZlcnRpY2FsLWFsaWduOiB0b3A7IGJvcmRlci1ib3R0b206IDJweCBzb2xpZCByZ2IoMCwgMCwgMCk7IiBub3dyYXA9Im5vd3JhcCI+DQogICAgICAgICAgICA8ZGl2IHN0eWxlPSJjb2xvcjogIzAwMDAwMDsiPi9zLyBDb2tleSBOZ3V5ZW48L2Rpdj4NCiAgICAgICAgICA8L3RkPg0KICAgICAgICA8L3RyPg0KICAgICAgICA8dHI+DQogICAgICAgICAgPHRkIHN0eWxlPSJ3aWR0aDogMTUlOyB2ZXJ0aWNhbC1hbGlnbjogdG9wOyI+JiMxNjA7PC90ZD4NCiAgICAgICAgICA8dGQgc3R5bGU9IndpZHRoOiA4NSU7IHZlcnRpY2FsLWFsaWduOiB0b3A7Ij4mIzE2MDs8L3RkPg0KICAgICAgICA8L3RyPg0KICAgICAgICA8dHI+DQogICAgICAgICAgPHRkIHN0eWxlPSJ3aWR0aDogMTUlOyB2ZXJ0aWNhbC1hbGlnbjogdG9wOyBwYWRkaW5nLWJvdHRvbTogMnB4OyIgbm93cmFwPSJub3dyYXAiPiYjMTYwOzwvdGQ+DQogICAgICAgICAgPHRkIHN0eWxlPSJ3aWR0aDogODUlOyB2ZXJ0aWNhbC1hbGlnbjogdG9wOyBib3JkZXItYm90dG9tOiAycHggc29saWQgcmdiKDAsIDAsIDApOyI+DQogICAgICAgICAgICA8ZGl2IHN0eWxlPSJjb2xvcjogIzAwMDAwMDsiPkNva2V5IE5ndXllbjwvZGl2Pg0KICAgICAgICAgIDwvdGQ+DQogICAgICAgIDwvdHI+DQogICAgICANCiAgICA8L3RhYmxlPg0KICAgIDxkaXYgc3R5bGU9ImNsZWFyOiBib3RoOyI+PGJyPg0KICAgIDwvZGl2Pg0KICAgIDxkaXY+PGJyPg0KICAgIDwvZGl2Pg0KICAgIDxkaXY+PGJyPg0KICAgIDwvZGl2Pg0KICA8L2Rpdj4NCjwvYm9keT4NCjwvaHRtbD4NCg== EX-24.0 2 poa_nguyen.htm POA_NGUYEN
POWER OF ATTORNEY

Know all by these present, that the undersigned, as a Section 16 reporting person of Atara Biotherapeutics, Inc. (the "Company"), hereby constitutes and appoints each of Amar Murugan, Eric Hyllengren, Jeff Kiekhofer and John Chao, or either of them acting individually, and with full power of substitution, the undersigned's true and lawful attorneys-in-fact to:

1. Complete and execute Forms 3, 4 and 5, Forms 144, and other forms and all amendments thereto, as such attorneys-in-fact shall in their discretion determine to be required or advisable pursuant to Section 16 of the Securities Exchange Act of 1934 (as amended) and the rules and regulations promulgated thereunder,  Rule 144 under the Securities Act of 1933 ("Rule 144"), or any successor laws and regulations, as a consequence of the undersigned's ownership, acquisition or disposition of securities of the Company; and

2. Do and perform any and all acts on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4, or 5, or Form 144 with the Securities and Exchange Commission (the "SEC"), any securities exchange or national association, the Company and such other person or agency as the attorneys-in-fact shall deem appropriate.

The undersigned hereby ratifies and confirms all that said attorneys-in-fact and agents shall do or cause to be done by virtue hereof. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934 (as amended) or Rule 144.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5, and Forms 144 with the SEC with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the Company and the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of February 21, 2024.



Signature:
/s/ Cokey Nguyen
   
 
Cokey Nguyen