Arkolith/Insider Trading/AMSC

AMSC Insider Trading

American Superconductor Corp · full profile →Last filing Jun 11, 2026
Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$7.8M
4 insiders
Net Insider Flow
-$7.8M
open market, 180d
Reporting Insiders
4
25 P/S transactions
Build

Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Form 4 insider API

Open-market buys and sells, cluster scans, company flows.

insider.transactions

13F holdings API

Owners, holdings, deltas, point-in-time portfolios.

stock.owners

MCP quickstart

Connect an agent, mint a key, make the first call.

/api/mcp

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jun 11, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)12K$37.28$429K
Jun 11, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)5K$37.85$174K
Jun 11, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)5K$37.33$188K
Jun 11, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)2K$37.85$66K
Jun 11, 2026Dambier Laura A.DirectorSell(S)4K$37.63$151K
Jun 8, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)3K$41.50$136K
Jun 8, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)2K$42.35$66K
Jun 8, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)5K$41.39$207K
Jun 8, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)5K$42.19$197K
Jun 3, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)7K$48.31$342K
Jun 3, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)5K$49.25$222K
Jun 3, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)500$50.29$25K
Jun 3, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)817$50.99$42K
Jun 3, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)3K$48.31$155K
Jun 3, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)3K$49.28$130K
Jun 3, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)609$50.83$31K
Jun 2, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)14K$49.45$681K
Jun 2, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)28K$50.63$1.4M
Jun 2, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)29K$51.46$1.5M
Jun 2, 2026McGahn Daniel PChairman, President and CEO, DirectorSell(S)2K$52.14$120K
Jun 2, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)6K$49.46$282K
Jun 2, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)12K$50.62$614K
Jun 2, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)12K$51.47$619K
Jun 2, 2026Kosiba John W JRSVP, CFO & TreasurerSell(S)600$52.19$31K
Jun 1, 2026McGahn Daniel PChairman, President and CEO, DirectorGrant(A)60K—$0
Jun 1, 2026Kosiba John W JRSVP, CFO & TreasurerGrant(A)30K—$0
Apr 3, 2026Dambier Laura A.DirectorGrant(A)3K—$0
Apr 3, 2026House Arthur HDirectorGrant(A)3K—$0
Apr 3, 2026Klein Margaret D.DirectorGrant(A)3K—$0
Apr 3, 2026Littlefield Barbara G.DirectorGrant(A)3K—$0
Apr 3, 2026Oliver David R JRDirectorGrant(A)3K—$0
Apr 3, 2026Donnelly Terence RobertDirectorGrant(A)3K—$0
Feb 24, 2026Oliver David R JRDirectorSell(S)200$34.10$7K
Aug 8, 2025House Arthur HDirectorSell(S)10K$50.92$494K
Aug 6, 2025House Arthur HDirectorOption exercise(M)10K$6.80$66K
Aug 6, 2025House Arthur HDirectorOption exercise(M)10K—$0
Aug 4, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)10K$55.26$544K
Aug 4, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)34K$54.34$1.9M
Aug 4, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)16K$55.13$868K
Aug 4, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)28K$55.11$1.5M
Aug 4, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)73K$54.26$4.0M
Jun 11, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)6K$28.55$181K
Jun 11, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)300$29.08$9K
Jun 11, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)12K$28.56$352K
Jun 11, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)500$29.09$15K
Jun 6, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)8K$31.82$245K
Jun 6, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)5K$31.83$151K
May 27, 2025Donnelly Terence RobertDirectorGrant(A)2K—$0
May 27, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)40K$26.61$1.1M
May 27, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)10K$25.55$258K
May 27, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)25K$25.55$626K
May 27, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)98K$26.60$2.6M
May 20, 2025McGahn Daniel PChairman, President and CEO, DirectorSell(S)13K$24.49$314K
May 20, 2025Kosiba John W JRSVP, CFO & TreasurerSell(S)12K$24.50$291K
May 15, 2025McGahn Daniel PChairman, President and CEO, DirectorGrant(A)240K—$0
May 15, 2025Kosiba John W JRSVP, CFO & TreasurerGrant(A)120K—$0
Apr 3, 2025Dambier Laura A.DirectorGrant(A)3K—$0
Apr 3, 2025House Arthur HDirectorGrant(A)3K—$0
Apr 3, 2025Klein Margaret D.DirectorGrant(A)3K—$0
Apr 3, 2025Littlefield Barbara G.DirectorGrant(A)3K—$0
Apr 3, 2025Oliver David R JRDirectorGrant(A)3K—$0
Nov 4, 2024Kosiba John W JRSVP, CFO & TreasurerSell(S)50K$28.28$1.4M
Sep 30, 2024McGahn Daniel PChairman, President and CEO, DirectorGrant(A)180K—$0
Sep 26, 2024Kosiba John W JRSVP, CFO & TreasurerGrant(A)90K—$0
Jun 11, 2024Kosiba John W JRSVP, CFO & TreasurerSell(S)32K$21.68$694K
Jun 11, 2024McGahn Daniel PChairman, President and CEO, DirectorSell(S)37K$21.69$806K
May 21, 2024McGahn Daniel PChairman, President and CEO, DirectorSell(S)19K$14.78$280K
May 21, 2024McGahn Daniel PChairman, President and CEO, DirectorSell(S)2K$15.30$25K
May 21, 2024Kosiba John W JRSVP, CFO & TreasurerSell(S)2K$15.30$33K
May 21, 2024Kosiba John W JRSVP, CFO & TreasurerSell(S)27K$14.78$397K
Apr 3, 2024Oliver David R JRDirectorGrant(A)4K—$0
Apr 3, 2024Littlefield Barbara G.DirectorGrant(A)4K—$0
Apr 3, 2024Klein Margaret D.DirectorGrant(A)4K—$0
Apr 3, 2024House Arthur HDirectorGrant(A)4K—$0
Apr 3, 2024Dambier Laura A.DirectorGrant(A)4K—$0
Jun 22, 2023Kosiba John W JRSVP, CFO & TreasurerSell(S)30K$5.95$178K
Jun 22, 2023McGahn Daniel PChairman, President and CEO, DirectorSell(S)37K$5.95$220K
Jun 21, 2023Kosiba John W JRSVP, CFO & TreasurerSell(S)50K$6.15$308K
Jun 21, 2023McGahn Daniel PChairman, President and CEO, DirectorSell(S)74K$6.14$453K
Jun 15, 2023McGahn Daniel PChairman, President and CEO, DirectorGrant(A)250K—$0
Jun 15, 2023McGahn Daniel PChairman, President and CEO, DirectorDisposed to issuer(D)5K—$0
Jun 15, 2023Kosiba John W JRSVP, CFO & TreasurerGrant(A)105K—$0
Jun 15, 2023Kosiba John W JRSVP, CFO & TreasurerDisposed to issuer(D)2K—$0
Apr 5, 2023Oliver David R JRDirectorGrant(A)12K—$0
Apr 5, 2023Littlefield Barbara G.DirectorGrant(A)12K—$0
Apr 5, 2023Dambier Laura A.DirectorGrant(A)9K—$0
Apr 5, 2023Klein Margaret D.DirectorGrant(A)9K—$0
Apr 5, 2023House Arthur HDirectorGrant(A)12K—$0
Dec 16, 2022Kosiba John W JRSVP, CFO & TreasurerBuy(P)15K$3.50$53K
Dec 16, 2022McGahn Daniel PChairman, President and CEO, DirectorBuy(P)25K$3.49$87K
Dec 12, 2022Kosiba John W JRSVP, CFO & TreasurerBuy(P)25K$3.34$84K
Oct 31, 2022McGahn Daniel PChairman, President and CEO, DirectorGrant(A)250K—$0
Oct 19, 2022Kosiba John W JRSVP, CFO & TreasurerGrant(A)125K—$0
Aug 4, 2022Klein Margaret D.DirectorBuy(P)500$5.57$3K
Jun 10, 2022Budhraja Vikram SDirectorGrant(A)2K—$0
Jun 10, 2022Kosiba John W JRSVP, CFO & TreasurerSell(S)8K$5.97$51K
Jun 10, 2022McGahn Daniel PChairman, President and CEO, DirectorSell(S)33K$5.98$195K
Jun 10, 2022Klein Margaret D.DirectorGrant(A)10K—$0
Jun 10, 2022Dambier Laura A.DirectorGrant(A)10K—$0
May 31, 2022Kosiba John W JRSVP, CFO & TreasurerSell(S)13K$5.45$73K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).