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Atara Biotherapeutics, Inc. (ATRA) reporting calendar

Atara Biotherapeutics, Inc. files periodic reports with the SEC as ATRA on Nasdaq. Atlas tracks 44 filed reports for this issuer, each linked to its original EDGAR accession.

Next window
27 Jul 2026 – 28 Aug 2026
Latest report
10-Q
Period ended
31 Mar 2026
Filed
12 May 2026
Reports on record
44

How this window is derived. Derived from this issuer's own filing history: 9 periods at a median 91-day cadence, filed a median 43 days after period end. The SEC does not publish forward reporting dates and Atlas does not estimate one.

Open ATRA market profile Latest filing on SEC EDGAR ↗ Biological Products, (No Diagnostic Substances) reporting datesAll Nasdaq reporting dates

Filed periodic reports

FormPeriod endedFiledLagSEC accession
10-Q31 Mar 202612 May 202642 days0001193125-26-219482
10-K31 Dec 202516 Mar 202675 days0001193125-26-108361
10-Q30 Sep 202512 Nov 202543 days0001193125-25-276219
10-Q30 Jun 202511 Aug 202542 days0000950170-25-106550
10-Q31 Mar 202515 May 202545 days0000950170-25-072040
10-K31 Dec 20247 Mar 202566 days0000950170-25-035507
10-Q30 Sep 202412 Nov 202443 days0000950170-24-125389
10-Q30 Jun 202412 Aug 202443 days0000950170-24-095533
10-Q31 Mar 20249 May 202439 days0000950170-24-056959
10-K31 Dec 202328 Mar 202488 days0000950170-24-037644
10-Q30 Sep 20231 Nov 202332 days0000950170-23-057147
10-Q30 Jun 20238 Aug 202339 days0000950170-23-039820
10-Q31 Mar 20238 May 202338 days0000950170-23-018820
10-K31 Dec 20228 Feb 202339 days0000950170-23-002185
10-Q30 Sep 20228 Nov 202239 days0000950170-22-023248
10-Q30 Jun 20228 Aug 202239 days0000950170-22-015536
10-Q31 Mar 20225 May 202235 days0001564590-22-018253
10-K31 Dec 202128 Feb 202259 days0001564590-22-007633
10-Q30 Sep 20214 Nov 202135 days0001564590-21-054261
10-Q30 Jun 20219 Aug 202140 days0001564590-21-042636
10-Q31 Mar 20214 May 202134 days0001564590-21-023337
10-K31 Dec 20201 Mar 202160 days0001564590-21-009854
10-Q30 Sep 20209 Nov 202040 days0001564590-20-052503
10-Q30 Jun 20205 Aug 202036 days0001564590-20-036808
10-Q31 Mar 20206 May 202036 days0001564590-20-021960
10-K31 Dec 201927 Feb 202058 days0001564590-20-007027
10-Q30 Sep 20197 Nov 201938 days0001564590-19-041368
10-Q30 Jun 20198 Aug 201939 days0001564590-19-030426
10-Q31 Mar 20199 May 201939 days0001564590-19-017599
10-K31 Dec 201826 Feb 201957 days0001564590-19-004275
10-Q30 Sep 20186 Nov 201837 days0001564590-18-027095
10-Q30 Jun 20181 Aug 201832 days0001564590-18-018263
10-Q31 Mar 20188 May 201838 days0001564590-18-011469
10-K31 Dec 201727 Feb 201858 days0001564590-18-003390
10-Q30 Sep 20179 Nov 201740 days0001564590-17-023005
10-Q30 Jun 20177 Aug 201738 days0001564590-17-016028
10-Q31 Mar 20174 May 201734 days0001564590-17-008828
10-K31 Dec 20169 Mar 201768 days0001564590-17-003792
10-Q30 Sep 20164 Nov 201635 days0001564590-16-027509
10-Q30 Jun 20168 Aug 201639 days0001564590-16-023141

Source: SEC EDGAR company submissions for CIK 0001604464. Atlas publishes filed facts only. The SEC does not publish forward reporting dates, so no announced future date is claimed here.