Company · CIK 1604464 # Atara Biotherapeutics, Inc. | CIK | [1604464](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001604464) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 2836 — Biological Products, (No Diagnostic Substances) | | Incorporated in | DE | | Business address | CA | | Listed | ATRA (Nasdaq) | | First annual or quarterly report | 2014-11-12 | ## Offerings 8 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-275256 | Shelf Effective | 2023-11-01 | 2026-05-12 | 7 | | 333-294377 | Shelf Effective | 2026-03-17 | 2026-03-25 | 2 | | 333-253731 | Shelf Effective | 2021-03-01 | 2023-02-13 | 3 | | 333-223262 | Shelf Effective | 2018-02-27 | 2020-12-09 | 11 | | 333-207876 | Shelf Effective | 2015-11-09 | 2018-01-04 | 5 | | 333-205347 | Registered company Final prospectus | 2015-06-29 | 2015-07-10 | 5 | | 333-201728 | Registered company Final prospectus | 2015-01-28 | 2015-02-12 | 4 | | 333-196936 | IPO Final prospectus | 2014-06-20 | 2014-10-16 | 6 | ## Filings 44 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-05-12 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312526219518/0001193125-26-219518-index.htm) Shelf takedown | 333-275256 | 0001193125-26-219518 | | 2026-03-25 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999526000930/9999999995-26-000930-index.htm) Declared effective | 333-294377 | 9999999995-26-000930 | | 2026-03-17 | [S-3](https://www.sec.gov/Archives/edgar/data/1604464/000119312526110849/0001193125-26-110849-index.htm) Shelf registered | 333-294377 | 0001193125-26-110849 | | 2026-03-16 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312526108386/0001193125-26-108386-index.htm) Shelf takedown | 333-275256 | 0001193125-26-108386 | | 2025-05-15 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312525120939/0001193125-25-120939-index.htm) Shelf takedown | 333-275256 | 0001193125-25-120939 | | 2024-09-04 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312524213178/0001193125-24-213178-index.htm) Shelf takedown | 333-275256 | 0001193125-24-213178 | | 2024-01-09 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312524005223/0001193125-24-005223-index.htm) Shelf takedown | 333-275256 | 0001193125-24-005223 | | 2023-11-13 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999523003308/9999999995-23-003308-index.htm) Declared effective | 333-275256 | 9999999995-23-003308 | | 2023-11-01 | [S-3](https://www.sec.gov/Archives/edgar/data/1604464/000119312523268364/0001193125-23-268364-index.htm) Shelf registered | 333-275256 | 0001193125-23-268364 | | 2023-02-13 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999523000387/9999999995-23-000387-index.htm) Declared effective | 333-253731 | 9999999995-23-000387 | | 2021-11-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312521341305/0001193125-21-341305-index.htm) Shelf takedown | 333-253731 | 0001193125-21-341305 | | 2021-03-01 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1604464/000119312521063753/0001193125-21-063753-index.htm) Shelf registered | 333-253731 | 0001193125-21-063753 | | 2020-12-09 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312520313908/0001193125-20-313908-index.htm) Shelf takedown | 333-223262 | 0001193125-20-313908 | | 2020-12-07 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312520311781/0001193125-20-311781-index.htm) Shelf takedown | 333-223262 | 0001193125-20-311781 | | 2020-05-27 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312520153246/0001193125-20-153246-index.htm) Shelf takedown | 333-223262 | 0001193125-20-153246 | | 2020-05-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312520151515/0001193125-20-151515-index.htm) Shelf takedown | 333-223262 | 0001193125-20-151515 | | 2020-02-27 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312520051170/0001193125-20-051170-index.htm) Shelf takedown | 333-223262 | 0001193125-20-051170 | | 2019-07-19 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312519198171/0001193125-19-198171-index.htm) Shelf takedown | 333-223262 | 0001193125-19-198171 | | 2019-07-18 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312519196503/0001193125-19-196503-index.htm) Shelf takedown | 333-223262 | 0001193125-19-196503 | | 2019-02-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312519050875/0001193125-19-050875-index.htm) Shelf takedown | 333-223262 | 0001193125-19-050875 | | 2018-03-01 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312518067383/0001193125-18-067383-index.htm) Shelf takedown | 333-223262 | 0001193125-18-067383 | | 2018-02-27 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312518060858/0001193125-18-060858-index.htm) Shelf takedown | 333-223262 | 0001193125-18-060858 | | 2018-02-27 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1604464/000119312518060781/0001193125-18-060781-index.htm) Shelf registered | 333-223262 | 0001193125-18-060781 | | 2018-01-04 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312518003048/0001193125-18-003048-index.htm) Shelf takedown | 333-207876 | 0001193125-18-003048 | | 2018-01-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312518000603/0001193125-18-000603-index.htm) Shelf takedown | 333-207876 | 0001193125-18-000603 | | 2017-03-27 | [424B5](https://www.sec.gov/Archives/edgar/data/1604464/000119312517097800/0001193125-17-097800-index.htm) Shelf takedown | 333-207876 | 0001193125-17-097800 | | 2015-11-23 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999515003123/9999999995-15-003123-index.htm) Declared effective | 333-207876 | 9999999995-15-003123 | | 2015-11-09 | [S-3](https://www.sec.gov/Archives/edgar/data/1604464/000119312515370611/0001193125-15-370611-index.htm) Shelf registered | 333-207876 | 0001193125-15-370611 | | 2015-07-10 | [424B1](https://www.sec.gov/Archives/edgar/data/1604464/000119312515250337/0001193125-15-250337-index.htm) Final prospectus | 333-205347 | 0001193125-15-250337 | | 2015-07-09 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999515001876/9999999995-15-001876-index.htm) Declared effective | 333-205347 | 9999999995-15-001876 | | 2015-07-09 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1604464/000119312515248628/0001193125-15-248628-index.htm) Amendment | 333-205347 | 0001193125-15-248628 | | 2015-07-07 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1604464/000119312515246917/0001193125-15-246917-index.htm) Amendment | 333-205347 | 0001193125-15-246917 | | 2015-06-29 | [S-1](https://www.sec.gov/Archives/edgar/data/1604464/000119312515239519/0001193125-15-239519-index.htm) Registration filed | 333-205347 | 0001193125-15-239519 | | 2015-02-12 | [424B4](https://www.sec.gov/Archives/edgar/data/1604464/000119312515046748/0001193125-15-046748-index.htm) Final prospectus | 333-201728 | 0001193125-15-046748 | | 2015-02-11 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999515000396/9999999995-15-000396-index.htm) Declared effective | 333-201728 | 9999999995-15-000396 | | 2015-02-09 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1604464/000119312515039131/0001193125-15-039131-index.htm) Amendment | 333-201728 | 0001193125-15-039131 | | 2015-01-28 | [S-1](https://www.sec.gov/Archives/edgar/data/1604464/000119312515022118/0001193125-15-022118-index.htm) Registration filed | 333-201728 | 0001193125-15-022118 | | 2014-10-16 | [424B4](https://www.sec.gov/Archives/edgar/data/1604464/000119312514373354/0001193125-14-373354-index.htm) Final prospectus | 333-196936 | 0001193125-14-373354 | | 2014-10-15 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1604464/999999999514003068/9999999995-14-003068-index.htm) Declared effective | 333-196936 | 9999999995-14-003068 | | 2014-10-07 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1604464/000119312514365604/0001193125-14-365604-index.htm) Amendment | 333-196936 | 0001193125-14-365604 | | 2014-09-26 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1604464/000119312514355030/0001193125-14-355030-index.htm) Amendment | 333-196936 | 0001193125-14-355030 | | 2014-07-10 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1604464/000119312514265496/0001193125-14-265496-index.htm) Amendment | 333-196936 | 0001193125-14-265496 | | 2014-06-20 | [S-1](https://www.sec.gov/Archives/edgar/data/1604464/000119312514243829/0001193125-14-243829-index.htm) Registration filed | 333-196936 | 0001193125-14-243829 | | 2014-04-10 | [DRS](https://www.sec.gov/Archives/edgar/data/1604464/000095012314003691/0000950123-14-003691-index.htm) Draft made public | 377-00564 | 0000950123-14-003691 | [All filings of this company](https://equitycapital.markets/filings?cik=1604464) · [CSV](https://equitycapital.markets/filings.csv?cik=1604464) --- Source page: https://equitycapital.markets/company/1604464 · Data: U.S. SEC EDGAR · CC BY 4.0