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AMPH US Equity

Amphastar Pharmaceuticals, Inc.Health Care · Pharmaceutical Preparations · CIK 1297184 · FY ends Dec 31
$21.74
+0.40 (+1.87%)
USD · as of 2026-08-19 · marketstack
13 8-K filings · 0 13D · 3 13G
DateEventWhat happened / filerSource
2026-08-068-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-07-1413GSchedule 13G filed — ≥5% beneficial owner (passive) · by DIMENSIONAL FUND ADVISORS LPsec.gov ↗
2026-07-138-K 5.02Departure/election of directors or officers; compensationsec.gov ↗
2026-07-088-K 8.01Other eventssec.gov ↗
2026-06-038-K 5.07Submission of matters to a vote of security holderssec.gov ↗
2026-05-078-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-03-2613G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INCsec.gov ↗
2026-03-168-K 8.01Other eventssec.gov ↗
2026-03-068-K 5.02Departure/election of directors or officers; compensationsec.gov ↗
2026-03-068-K 1.01Entry into a material definitive agreementsec.gov ↗
2026-02-268-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-01-128-K 7.01Regulation FD disclosuresec.gov ↗
2026-01-128-K 1.01Entry into a material definitive agreementsec.gov ↗
2025-11-068-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2025-10-248-K 1.01Entry into a material definitive agreementsec.gov ↗
2025-10-1713G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by BlackRock, Inc.sec.gov ↗
2025-09-188-K 1.01Entry into a material definitive agreementsec.gov ↗
Source: SEC EDGAR (public domain) · history starts 2025-09-18

Every row is a filed document, checked against its EDGAR index.