SEC Form 4 reporting owner

Kosiba John W JR

Kosiba John W JR has filed 12 Form 4 transactions reported between June 1, 2026 and June 11, 2026, as SVP, CFO & Treasurer of AMERICAN SUPERCONDUCTOR CORP /DE/.

Name as filed: Kosiba John W JR

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$2.3M
11 lines
Companies
1
with Form 4 filings
Latest transaction
Jun 11, 2026
transaction date

Roles and reported holdings

  • AMSCAMERICAN SUPERCONDUCTOR CORP /DE/
    Jun 1, 2026 – Jun 11, 2026

    SVP, CFO & Treasurer

    Held directly334,377 sh as of Jun 11, 2026 · Form 4

    24 months: $2.3M sold

Transaction history

All 12 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jun 11, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct1,743$66K@ $37.85Form 4
Jun 11, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct5,026$188K@ $37.33Form 4
Jun 8, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct1,549$66K@ $42.35Form 4
Jun 8, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct3,286$136K@ $41.50Form 4
Jun 3, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct609$31K@ $50.83Form 4
Jun 3, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct2,638$130K@ $49.28Form 4
Jun 3, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct3,200$155K@ $48.31Form 4
Jun 2, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct600$31K@ $52.19Form 4
Jun 2, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct12,036$619K@ $51.47Form 4
Jun 2, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct12,122$614K@ $50.62Form 4
Jun 2, 2026AMSCSVP, CFO & TreasurerOpen-market saleCode S · direct5,704$282K@ $49.46Form 4
Jun 1, 2026AMSCSVP, CFO & TreasurerGrant or awardCode A · direct30,000—Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.