AMERICAN SUPERCONDUCTOR CORP /DE/

AMSC
Exchange
Nasdaq
Industry
Motors & Generators
SEC CIK
0000880807

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateInsiderTransactionSharesAvg priceValueShares afterHolding changeFiling
Jun 12, 2026Jun 11, 2026Dambier Laura A.DirectorSSaleCommon Stock−4K$37.63−$150.52K14.99K−21.1%SEC
Jun 11, 2026Jun 11, 2026Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−6.77K$37.4639−$253.59K334.38K−2.0%SEC10b5-1
Jun 11, 2026Jun 11, 2026McGahn Daniel PChairman, President and CEOSSaleCommon Stock−16.12K$37.443−$603.47K1.13M−1.4%SEC10b5-1
Jun 10, 2026Jun 8, 2026Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−4.84K$41.7723−$201.97K341.15K−1.4%SEC10b5-1
Jun 10, 2026Jun 8, 2026McGahn Daniel PChairman, President and CEOSSaleCommon Stock−9.67K$41.777−$403.98K1.15M−0.8%SEC10b5-1
Jun 3, 2026Jun 2 – Jun 3, 2026Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−36.91K$50.4509−$1.86M345.98K−9.6%SEC10b5-1
Jun 3, 2026Jun 2 – Jun 3, 2026McGahn Daniel PChairman, President and CEOSSaleCommon Stock−85.42K$50.4947−$4.31M1.16M−6.9%SEC10b5-1
Feb 26, 2026Feb 24, 2026OLIVER DAVID R JRDirectorSSaleCommon Stock−200$34.10−$6.82K60.71K−0.3%SEC
Nov 13, 2025Jun 18, 2019OLIVER DAVID R JRDirectorPPurchaseCommon Stock+200$8.33+$1.67K60.91K+0.3%SEC
Aug 8, 2025Aug 8, 2025House Arthur HDirectorSSaleCommon Stock−9.7K$50.92−$494.08K48.66K−16.6%SEC
Aug 6, 2025Aug 4, 2022Klein Margaret D.DirectorPPurchaseCommon Stock+500$5.57+$2.79K16.38K+3.1%SEC
Aug 6, 2025Aug 4, 2025McGahn Daniel PChairman, President and CEOSSaleCommon Stock−100.85K$54.4938−$5.5M1.18M−7.9%SEC
Aug 6, 2025Aug 4, 2025Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−50K$54.5887−$2.73M352.89K−12.4%SEC
Aug 6, 2025Aug 4, 2025Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−9.84K$55.26−$543.92K0−100.0%SEC
Jun 12, 2025Jun 11, 2025McGahn Daniel PChairman, President and CEOSSaleCommon Stock−12.82K$28.5807−$366.26K1.28M−1.0%SEC10b5-1
Jun 12, 2025Jun 11, 2025Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−6.64K$28.5739−$189.79K402.89K−1.6%SEC10b5-1
Jun 9, 2025Jun 6, 2025Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−4.74K$31.83−$151K409.53K−1.1%SEC10b5-1
Jun 9, 2025Jun 6, 2025McGahn Daniel PChairman, President and CEOSSaleCommon Stock−7.69K$31.82−$244.66K1.3M−0.6%SEC10b5-1
May 29, 2025May 27, 2025McGahn Daniel PChairman, President and CEOSSaleCommon Stock−122.66K$26.3902−$3.24M1.3M−8.6%SEC10b5-1
May 29, 2025May 27, 2025Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−50K$26.3959−$1.32M414.28K−10.8%SEC10b5-1
May 22, 2025May 20, 2025Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−11.86K$24.50−$290.57K464.28K−2.5%SEC10b5-1
May 22, 2025May 20, 2025McGahn Daniel PChairman, President and CEOSSaleCommon Stock−12.82K$24.49−$313.84K1.43M−0.9%SEC10b5-1
Nov 6, 2024Nov 4, 2024Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−50K$28.28−$1.41M356.14K−12.3%SEC
Jun 12, 2024Jun 11, 2024McGahn Daniel PChairman, President and CEOSSaleCommon Stock−37.17K$21.69−$806.11K1.02M−3.5%SEC10b5-1
Jun 12, 2024Jun 11, 2024Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−32K$21.68−$693.76K316.14K−9.2%SEC10b5-1
May 23, 2024May 21, 2024Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−29K$14.8189−$429.75K348.14K−7.7%SEC10b5-1
May 23, 2024May 21, 2024McGahn Daniel PChairman, President and CEOSSaleCommon Stock−20.56K$14.821−$304.7K1.06M−1.9%SEC10b5-1
Jun 23, 2023Jun 21 – Jun 22, 2023McGahn Daniel PChairman, President and CEOSSaleCommon Stock−110.7K$6.0767−$672.71K1.08M−9.3%SEC10b5-1
Jun 23, 2023Jun 21 – Jun 22, 2023Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−80.01K$6.0753−$486.09K377.14K−17.5%SEC10b5-1
Dec 19, 2022Dec 16, 2022McGahn Daniel PChairman, President and CEOPPurchaseCommon Stock+25K$3.49+$87.25K943.22K+2.7%SEC
Dec 19, 2022Dec 16, 2022Kosiba John W JRSVP, CFO & TreasurerPPurchaseCommon Stock+15K$3.50+$52.5K353.76K+4.4%SEC
Dec 13, 2022Dec 12, 2022Kosiba John W JRSVP, CFO & TreasurerPPurchaseCommon Stock+25K$3.34+$83.5K338.76K+8.0%SEC
Jun 13, 2022Jun 10, 2022McGahn Daniel PChairman, President and CEOSSaleCommon Stock−32.59K$5.98−$194.87K668.22K−4.6%SEC
Jun 13, 2022Jun 10, 2022Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−8.47K$5.97−$50.58K188.76K−4.3%SEC
Jun 2, 2022May 31, 2022McGahn Daniel PChairman, President and CEOSSaleCommon Stock−21.73K$5.45−$118.4K700.81K−3.0%SEC
Jun 2, 2022May 31, 2022Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−13.33K$5.45−$72.62K197.23K−6.3%SEC
Dec 13, 2021Dec 10, 2021Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−22.75K$11.31−$257.35K210.56K−9.8%SEC
Dec 9, 2021Dec 8, 2021BUDHRAJA VIKRAM SDirectorSSaleCommon Stock−3K$11.98−$35.94K51.69K−5.5%SEC
Nov 2, 2021Nov 1, 2021McGahn Daniel PChairman, President and CEOSSaleCommon Stock−7.24K$18.96−$137.29K722.54K−1.0%SEC
Nov 2, 2021Nov 1 – Nov 2, 2021Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−11.01K$18.8443−$207.44K233.31K−4.5%SEC
Jul 6, 2021Jul 1, 2021McGahn Daniel PChairman, President and CEOSSaleCommon Stock−14.66K$17.66−$258.97K694.12K−2.1%SEC
Jul 6, 2021Jul 1, 2021Kosiba John W JRSVP, CFO & TreasurerSSaleCommon Stock−6.41K$17.66−$113.18K232.38K−2.7%SEC