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AMSCAMERICAN SUPERCONDUCTOR CORP /DE/

Market cap
$1.22B
as of 2026-10-23
Latest close
$25.12
as of 2026-10-23
Sector
Industrials
as of 2026-10-24
Industry
Specialty Industrial Machinery
as of 2026-10-24

Cluster

No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).

Form 4 historysince 2024-04-04

InsiderTradedFiledTypeSharesPriceValueOwned after10b5-1 planFiling
Littlefield Barbara G.Sep 18Sep 21A1,607$0.00$037,034NoForm 4
Dambier Laura A.Jun 11Jun 12S4,000$37.63Sale −$150,52014,992NoForm 4
McGahn Daniel PChairman, President and CEOJun 11Jun 11S11,508$37.28Sale −$429,0181,136,538YesForm 4
McGahn Daniel PChairman, President and CEOJun 11Jun 11S4,609$37.85Sale −$174,4511,131,929YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 11Jun 11S5,026$37.33Sale −$187,621336,120YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 11Jun 11S1,743$37.85Sale −$65,973334,377YesForm 4
McGahn Daniel PChairman, President and CEOJun 8Jun 10S4,992$41.39Sale −$206,6191,152,724YesForm 4
McGahn Daniel PChairman, President and CEOJun 8Jun 10S4,678$42.19Sale −$197,3651,148,046YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 8Jun 10S3,286$41.50Sale −$136,369342,695YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 8Jun 10S1,549$42.35Sale −$65,600341,146YesForm 4
McGahn Daniel PChairman, President and CEOJun 3Jun 3S7,075$48.31Sale −$341,7931,163,534YesForm 4
McGahn Daniel PChairman, President and CEOJun 3Jun 3S4,501$49.25Sale −$221,6741,159,033YesForm 4
McGahn Daniel PChairman, President and CEOJun 3Jun 3S500$50.29Sale −$25,1451,158,533YesForm 4
McGahn Daniel PChairman, President and CEOJun 3Jun 3S817$50.99Sale −$41,6591,157,716YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 3Jun 3S3,200$48.31Sale −$154,592349,228YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 3Jun 3S2,638$49.28Sale −$130,001346,590YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 3Jun 3S609$50.83Sale −$30,955345,981YesForm 4
McGahn Daniel PChairman, President and CEOJun 2Jun 3S13,762$49.45Sale −$680,5311,229,372YesForm 4
McGahn Daniel PChairman, President and CEOJun 2Jun 3S27,900$50.63Sale −$1,412,5771,201,472YesForm 4
McGahn Daniel PChairman, President and CEOJun 2Jun 3S28,558$51.46Sale −$1,469,5951,172,914YesForm 4
McGahn Daniel PChairman, President and CEOJun 2Jun 3S2,305$52.14Sale −$120,1831,170,609YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 2Jun 3S5,704$49.46Sale −$282,120377,186YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 2Jun 3S12,122$50.62Sale −$613,616365,064YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 2Jun 3S12,036$51.47Sale −$619,493353,028YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 2Jun 3S600$52.19Sale −$31,314352,428YesForm 4
McGahn Daniel PChairman, President and CEOJun 1Jun 3A60,000$0.00$01,243,134YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 1Jun 3A30,000$0.00$0382,890YesForm 4
Dambier Laura A.Apr 3Apr 7A3,116$0.00$018,992NoForm 4
House Arthur HApr 3Apr 7A3,116$0.00$051,779NoForm 4
Klein Margaret D.Apr 3Apr 7A3,116$0.00$019,492NoForm 4
Littlefield Barbara G.Apr 3Apr 7A3,116$0.00$035,427NoForm 4
Oliver David R JrApr 3Apr 7A3,116$0.00$063,823NoForm 4
Donnelly Terence RobertApr 3Apr 7A2,665$0.00$02,665NoForm 4
Oliver David R JrFeb 24Feb 26S200$34.10Sale −$6,82060,707NoForm 4
Oliver David R JrJun 18, 2019Nov 13, 2025P200$8.33Purchase +$1,66660,907NoForm 4
House Arthur HAug 8, 2025Aug 8, 2025S9,703$50.92Sale −$494,07748,663NoForm 4
House Arthur HAug 6, 2025Aug 8, 2025M9,703$6.80$65,98058,366NoForm 4
House Arthur HAug 6, 2025Aug 8, 2025M · derivative9,703$6.80$65,980not reportedNoForm 4
Kosiba John W JRSVP, CFO & TreasurerAug 4, 2025Aug 6, 2025S34,260$54.34Sale −$1,861,688368,630NoForm 4
Kosiba John W JRSVP, CFO & TreasurerAug 4, 2025Aug 6, 2025S15,740$55.13Sale −$867,746352,890NoForm 4
Kosiba John W JRSVP, CFO & TreasurerAug 4, 2025Aug 6, 2025S9,843$55.26Sale −$543,924not reportedNoForm 4
McGahn Daniel PChairman, President and CEOAug 4, 2025Aug 6, 2025S73,105$54.26Sale −$3,966,6771,210,877NoForm 4
McGahn Daniel PChairman, President and CEOAug 4, 2025Aug 6, 2025S27,743$55.11Sale −$1,528,9171,183,134NoForm 4
Klein Margaret D.Aug 4, 2022Aug 6, 2025P500$5.57Purchase +$2,78516,376NoForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 11, 2025Jun 12, 2025S6,342$28.55Sale −$181,064403,190YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 11, 2025Jun 12, 2025S300$29.08Sale −$8,724402,890YesForm 4
McGahn Daniel PChairman, President and CEOJun 11, 2025Jun 12, 2025S12,315$28.56Sale −$351,7161,284,482YesForm 4
McGahn Daniel PChairman, President and CEOJun 11, 2025Jun 12, 2025S500$29.09Sale −$14,5451,283,982YesForm 4
McGahn Daniel PChairman, President and CEOJun 6, 2025Jun 9, 2025S7,689$31.82Sale −$244,6641,296,797YesForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 6, 2025Jun 9, 2025S4,744$31.83Sale −$151,002409,532YesForm 4
Donnelly Terence RobertMay 27, 2025May 29, 2025A · derivative2,112$27.38$57,8272,112NoForm 4
Kosiba John W JRSVP, CFO & TreasurerMay 27, 2025May 29, 2025S10,097$25.55Sale −$257,978454,179YesForm 4
Kosiba John W JRSVP, CFO & TreasurerMay 27, 2025May 29, 2025S39,903$26.61Sale −$1,061,819414,276YesForm 4
McGahn Daniel PChairman, President and CEOMay 27, 2025May 29, 2025S24,506$25.55Sale −$626,1281,402,635YesForm 4
McGahn Daniel PChairman, President and CEOMay 27, 2025May 29, 2025S98,149$26.60Sale −$2,610,7631,304,486YesForm 4
McGahn Daniel PChairman, President and CEOMay 20, 2025May 22, 2025S12,815$24.49Sale −$313,8391,427,141YesForm 4
Kosiba John W JRSVP, CFO & TreasurerMay 20, 2025May 22, 2025S11,860$24.50Sale −$290,570464,276YesForm 4
McGahn Daniel PChairman, President and CEOMay 15, 2025May 19, 2025A240,000$0.00$01,439,956NoForm 4
Kosiba John W JRSVP, CFO & TreasurerMay 15, 2025May 19, 2025A120,000$0.00$0476,136NoForm 4
Dambier Laura A.Apr 3, 2025Apr 4, 2025A2,639$0.00$015,876NoForm 4
House Arthur HApr 3, 2025Apr 4, 2025A2,639$0.00$048,663NoForm 4
Klein Margaret D.Apr 3, 2025Apr 4, 2025A2,639$0.00$015,876NoForm 4
Littlefield Barbara G.Apr 3, 2025Apr 4, 2025A2,639$0.00$032,311NoForm 4
Oliver David R JrApr 3, 2025Apr 4, 2025A2,639$0.00$060,707NoForm 4
Kosiba John W JRSVP, CFO & TreasurerNov 4, 2024Nov 6, 2024S50,000$28.28Sale −$1,414,000356,136NoForm 4
McGahn Daniel PChairman, President and CEOSep 30, 2024Oct 1, 2024A180,000$0.00$01,199,956NoForm 4
Kosiba John W JRSVP, CFO & TreasurerSep 26, 2024Sep 30, 2024A90,000$0.00$0406,136NoForm 4
Kosiba John W JRSVP, CFO & TreasurerJun 11, 2024Jun 12, 2024S32,000$21.68Sale −$693,760316,136YesForm 4
McGahn Daniel PChairman, President and CEOJun 11, 2024Jun 12, 2024S37,165$21.69Sale −$806,1091,019,956YesForm 4
McGahn Daniel PChairman, President and CEOMay 21, 2024May 23, 2024S18,939$14.78Sale −$279,9181,058,741YesForm 4
McGahn Daniel PChairman, President and CEOMay 21, 2024May 23, 2024S1,620$15.30Sale −$24,7861,057,121YesForm 4
Kosiba John W JRSVP, CFO & TreasurerMay 21, 2024May 23, 2024S26,830$14.78Sale −$396,547350,306YesForm 4
Kosiba John W JRSVP, CFO & TreasurerMay 21, 2024May 23, 2024S2,170$15.30Sale −$33,201348,136YesForm 4
Oliver David R JrApr 3, 2024Apr 4, 2024A3,840$0.00$058,068NoForm 4
Littlefield Barbara G.Apr 3, 2024Apr 4, 2024A3,840$0.00$029,672NoForm 4
Klein Margaret D.Apr 3, 2024Apr 4, 2024A3,840$0.00$013,237NoForm 4
House Arthur HApr 3, 2024Apr 4, 2024A3,840$0.00$046,024NoForm 4
Dambier Laura A.Apr 3, 2024Apr 4, 2024A3,840$0.00$013,237NoForm 4