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Amphastar Pharmaceuticals, Inc. (AMPH) reporting calendar

Amphastar Pharmaceuticals, Inc. files periodic reports with the SEC as AMPH on Nasdaq. Atlas tracks 48 filed reports for this issuer, each linked to its original EDGAR accession.

Next window
26 Jul 2026 – 19 Aug 2026
Latest report
10-Q
Period ended
31 Mar 2026
Filed
7 May 2026
Reports on record
48

How this window is derived. Derived from this issuer's own filing history: 9 periods at a median 91-day cadence, filed a median 38 days after period end. The SEC does not publish forward reporting dates and Atlas does not estimate one.

Open AMPH market profile Latest filing on SEC EDGAR ↗ Pharmaceutical Preparations reporting datesAll Nasdaq reporting dates

Filed periodic reports

FormPeriod endedFiledLagSEC accession
10-Q31 Mar 20267 May 202637 days0001297184-26-000033
10-K31 Dec 202526 Feb 202657 days0001297184-26-000009
10-Q30 Sep 20256 Nov 202537 days0001297184-25-000064
10-Q30 Jun 20257 Aug 202538 days0001297184-25-000050
10-Q31 Mar 20258 May 202538 days0001297184-25-000029
10-K31 Dec 20243 Mar 202562 days0001297184-25-000008
10-Q30 Sep 20247 Nov 202438 days0001297184-24-000058
10-Q30 Jun 20249 Aug 202440 days0001297184-24-000048
10-Q31 Mar 202410 May 202440 days0001297184-24-000037
10-K31 Dec 202329 Feb 202460 days0001297184-24-000009
10-Q30 Sep 20238 Nov 202339 days0001297184-23-000082
10-Q30 Jun 20239 Aug 202340 days0001297184-23-000066
10-Q31 Mar 20239 May 202339 days0001297184-23-000049
10-K31 Dec 20221 Mar 202360 days0001297184-23-000019
10-Q30 Sep 20228 Nov 202239 days0001297184-22-000056
10-Q30 Jun 20229 Aug 202240 days0001297184-22-000044
10-Q31 Mar 202210 May 202240 days0001297184-22-000029
10-K31 Dec 202111 Mar 202270 days0001297184-22-000007
10-Q30 Sep 20219 Nov 202140 days0001297184-21-000064
10-Q30 Jun 20219 Aug 202140 days0001297184-21-000048
10-Q31 Mar 20217 May 202137 days0001297184-21-000031
10-K31 Dec 202015 Mar 202174 days0001297184-21-000008
10-Q30 Sep 20206 Nov 202037 days0001297184-20-000056
10-Q30 Jun 20207 Aug 202038 days0001297184-20-000047
10-Q31 Mar 202011 May 202041 days0001297184-20-000027
10-K31 Dec 201916 Mar 202076 days0001297184-20-000007
10-Q30 Sep 20198 Nov 201939 days0001297184-19-000044
10-Q30 Jun 20199 Aug 201940 days0001297184-19-000038
10-Q31 Mar 201910 May 201940 days0001297184-19-000027
10-K31 Dec 201815 Mar 201974 days0001297184-19-000013
10-Q30 Sep 20189 Nov 201840 days0001297184-18-000050
10-Q30 Jun 20189 Aug 201840 days0001297184-18-000043
10-Q31 Mar 201810 May 201840 days0001297184-18-000029
10-K31 Dec 201714 Mar 201873 days0001297184-18-000011
10-Q30 Sep 20179 Nov 201740 days0001297184-17-000035
10-Q30 Jun 20179 Aug 201740 days0001297184-17-000028
10-Q31 Mar 201710 May 201740 days0001558370-17-004032
10-K31 Dec 201615 Mar 201774 days0001297184-17-000007
10-Q30 Sep 20169 Nov 201640 days0001558370-16-009753
10-Q30 Jun 20169 Aug 201640 days0001558370-16-007706

Source: SEC EDGAR company submissions for CIK 0001297184. Atlas publishes filed facts only. The SEC does not publish forward reporting dates, so no announced future date is claimed here.