AMERICAN SUPERCONDUCTOR CORP (AMSC) Stock Ownership

NASDAQ:AMSC • US0301112076

Current stock price

33.85 USD
+1.64 (+5.09%)
At close:
33.85 USD
0 (0%)
After Hours:

AMSC Ownership information

AMSC Ownership Chart.AMSC Ownership Chart: showing Insider, Institutional ownership and shares available to the public.AMSC Ownership.InsiderInstitutionalPublic



Shares Outstanding47.61M
Float45.88M
Float Short Interest Percentage5.39%
Owners (insider)3.64%
Owners (institutional)70.81%
Owners (insider) change-0.01%
Owners (institutional) change1.32%
AMSC Institutional Ownership HistoryAMSC Institutional Ownership HistoryAMSC Institutional Ownership History Sep 2021 Mar 2022 Sep 2022 Mar 2023 Sep 2023 Mar 2024 Sep 2024 Mar 2025 Sep 2025 10M 20M 30M
AMSC Historical Insider Transactions ChartAMSC Historical Insider Buy and Sell Transactions ChartAMSC Historical Insider Transactions Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 0 100K -100K 200K 300K
DateNameTypeSharesPriceAmount
Feb 24, 2026OLIVER DAVID R JROpen Market Sale20034.10$ 6,820.00
Aug 8, 2025House Arthur HOpen Market Sale970350.92$ 494,081.61
Aug 6, 2025House Arthur HOption Excercise97036.80$ 65,980.40
Aug 4, 2025McGahn Daniel POpen Market Sale10084854.49$ 5,495,526.17
Aug 4, 2025Kosiba John W JROpen Market Sale5984354.70$ 3,273,380.45
Jun 11, 2025McGahn Daniel POpen Market Sale1281528.58$ 366,241.70
Jun 11, 2025Kosiba John W JROpen Market Sale664228.57$ 189,778.31
Jun 6, 2025McGahn Daniel POpen Market Sale768931.82$ 244,670.13
Jun 6, 2025Kosiba John W JROpen Market Sale474431.83$ 151,012.43
May 27, 2025Kosiba John W JROpen Market Sale5000026.40$ 1,319,756.80
May 27, 2025McGahn Daniel POpen Market Sale12265526.39$ 3,236,835.36
May 20, 2025McGahn Daniel POpen Market Sale1281524.49$ 313,877.80
May 20, 2025Kosiba John W JROpen Market Sale1186024.50$ 290,529.68
May 15, 2025Kosiba John W JRGrant1200000.00$ 0.00
May 15, 2025McGahn Daniel PGrant2400000.00$ 0.00
Apr 3, 2025House Arthur HGrant26390.00$ 0.00
Apr 3, 2025Dambier Laura A.Grant26390.00$ 0.00
Apr 3, 2025OLIVER DAVID R JRGrant26390.00$ 0.00
Apr 3, 2025Littlefield Barbara G.Grant26390.00$ 0.00
Apr 3, 2025Klein Margaret D.Grant26390.00$ 0.00