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AMSC US Equity

American Superconductor Corp /de/Information Technology · Motors & Generators · CIK 880807 · FY ends Mar 31
$30.01
-0.04 (-0.13%)
USD · as of 2026-08-21 · marketstack
DateEventWhat happened / filerSource
2026-08-058-K 5.07Submission of matters to a vote of security holderssec.gov ↗
2026-08-058-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-07-3113G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD CAPITAL MANAGEMENT LLCsec.gov ↗
2026-06-028-K 5.02Departure/election of directors or officers; compensationsec.gov ↗
2026-05-278-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-04-2913GSchedule 13G filed — ≥5% beneficial owner (passive) · by VANGUARD CAPITAL MANAGEMENT LLCsec.gov ↗
2026-03-2613G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INCsec.gov ↗
2026-02-178-K 9.01Financial statements and exhibits (amendment)sec.gov ↗
2026-02-048-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
2026-01-3013G/ASchedule 13G amendment — ≥5% beneficial owner (passive) · by VANGUARD GROUP INCsec.gov ↗
2025-12-238-K 8.01Other eventssec.gov ↗
2025-12-108-K 8.01Other eventssec.gov ↗
2025-12-108-K 3.02Unregistered sales of equity securitiessec.gov ↗
2025-12-108-K 2.01Completion of acquisition or disposition of assetssec.gov ↗
2025-12-108-K 1.01Entry into a material definitive agreementsec.gov ↗
2025-11-058-K 2.02Results of operations and financial condition (earnings)earnings history (EARN) →sec.gov ↗
Source: SEC EDGAR (public domain) · history starts 2025-11-05

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