Insiders who reported open-market trades in the last 12 months at the companies John W. Kosiba Jr. files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Daniel P. McGahn - $5.32M in AMSC purchases and sales in the last 12 months
Laura A. Dambier - $151K in AMSC purchases and sales in the last 12 months
John W. Kosiba Jr. is a corporate insider, tracked as SVP, CFO & Treasurer of AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did John W. Kosiba Jr. last file a Form 4?
The most recent primary Form 4 on record is dated 11 June 2026, one of 5 filings going back to 2024.
Has John W. Kosiba Jr. been buying or selling stock?
Recorded transactions: 0 open-market purchases and 15 open-market sales ($7.01M) across all tracked filings.
John W. Kosiba Jr. is SVP, CFO & Treasurer of AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC). 5 SEC Form 4 filings on record going back to 2024, most recently on 11 June 2026. Most recent open-market trade: sold $66K of AMSC on 11 June 2026. Lifetime open-market sales: $7.01M.
Recent transactions
16
The latest 16 SEC Form 4 transactions reported by John W. Kosiba Jr..
InsiderAlpha's records for John W. Kosiba Jr. go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. 12 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
