Kosiba John W JR
SVP, CFO & Treasurer
Kosiba John W JR has filed 3 SEC Form 4 filings (12 transaction rows) across 1 company, with disclosures dating back to 2026. 3 of those filings fall inside the rolling window. Most recent filing: Jun 11, 2026.
On the most recent filing, Kosiba John W JR is listed as SVP, CFO & Treasurer at AMERICAN SUPERCONDUCTOR CORP. Inside the rolling window, Kosiba John W JR reported no open-market purchases and 4 open-market sales totaling $2.3M in AMSC. The largest disclosed transaction in the window is a sale of 30,462 AMSC shares on Jun 2, 2026, worth $1.5M.
Companies traded
Other insiders at AMSC
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$2.3M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Kosiba John W JR made?
Kosiba John W JR has filed 3 SEC Form 4 filings (12 transaction rows) across 1 company since 2026.
Which companies does Kosiba John W JR trade?
Kosiba John W JR has filed SEC Form 4 disclosures for 1 company, including AMSC.
When was Kosiba John W JR's most recent SEC Form 4 filing?
Kosiba John W JR's most recent SEC Form 4 filing on Tracefour is dated Jun 11, 2026.
What is Kosiba John W JR's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Kosiba John W JR is listed as SVP, CFO & Treasurer.
What is Kosiba John W JR's total buy and sell value in the current window?
Inside the rolling retention window, Kosiba John W JR bought $0 and sold $2.3M based on SEC Form 4 filings.
What was Kosiba John W JR's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 30,462 AMSC shares on 2026-06-02, worth $1.5M, per SEC Form 4 filings.