American Superconductor (AMSC) CFO sells 6,769 shares for tax withholding
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
American Superconductor SVP, CFO & Treasurer John W. Kosiba Jr. reported selling 6,769 shares of common stock on June 11, 2026 in two open-market transactions at weighted average prices of $37.33 and $37.85. According to the footnotes, these sales were made to cover tax withholding obligations tied to vesting of restricted stock awards and were executed under a pre-arranged Rule 10b5-1 trading plan. After these transactions, he holds 334,377 shares directly and 371 shares indirectly through the company 401(k) plan as of June 11, 2026.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 6,769 shares ($253,579)
Net Sell
3 txns
Insider
Kosiba John W JR
Role
SVP, CFO & Treasurer
Sold
6,769 shs ($254K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 5,026 | $37.3267 | $188K |
| Sale | Common Stock | 1,743 | $37.8516 | $66K |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 336,120 shares (Direct, null);
Common Stock — 371 shares (Indirect, By 401(k) plan)
Footnotes (1)
- Represents the number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The reported transaction was effected pursuant to a Rule 10b5-1 trading plan previously entered into by the reporting person on August 15, 2025. The sales were executed in multiple trades at prices ranging from $36.775-$37.73. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transactions were effected. The sales were executed in multiple trades at prices ranging from $37.82-$38.06. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transactions were effected. Following all the transactions reported on this Form 4, the reporting person holds 334,377 shares directly. Following all the transactions reported on this Form 4, the reporting person holds 371 shares indirectly through the company's 401(k) plan as of June 11, 2026.
Key Figures
Shares sold: 6,769 shares
Sale price (block 1): $37.3267 per share
Sale price (block 2): $37.8516 per share
+3 more
6 metrics
Shares sold
6,769 shares
Open-market sales on June 11, 2026
Sale price (block 1)
$37.3267 per share
5,026 shares sold; weighted average price
Sale price (block 2)
$37.8516 per share
1,743 shares sold; weighted average price
Direct holdings after
334,377 shares
Held directly following all reported transactions
Indirect 401(k) holdings after
371 shares
Held indirectly via company 401(k) as of June 11, 2026
Net shares sold
6,769 shares
Net sell direction from transaction summary
Key Terms
Rule 10b5-1 trading plan, restricted stock awards, weighted average sale price, 401(k) plan
4 terms
Rule 10b5-1 trading plan regulatory
"The reported transaction was effected pursuant to a Rule 10b5-1 trading plan previously entered into"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
restricted stock awards financial
"shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock awards"
Restricted stock awards are company shares given to employees or executives that cannot be sold or transferred until certain conditions — like staying with the company for a set time or meeting performance targets — are met, like a gift that is locked in a safe until rules are satisfied. Investors care because these awards tie management’s pay to company performance, can increase the number of shares outstanding when they become tradable (dilution), and may signal expected future selling pressure or commitment to long-term growth.
weighted average sale price financial
"The price reported above reflects the weighted average sale price"
401(k) plan financial
"holds 371 shares indirectly through the company's 401(k) plan as of June 11, 2026"
A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.
FAQ
What insider transaction did AMSC CFO John Kosiba report?
AMSC SVP, CFO & Treasurer John W. Kosiba Jr. reported selling 6,769 shares of common stock on June 11, 2026. The sales were executed in two open-market transactions disclosed in the Form 4 filing.
Were the AMSC CFO’s stock sales under a Rule 10b5-1 plan?
Yes, the Form 4 notes that the reported transaction was effected pursuant to a previously entered Rule 10b5-1 trading plan. Such plans pre-schedule trades, reducing the significance of timing decisions.
How large were the AMSC CFO’s sales relative to his remaining holdings?
The CFO sold 6,769 shares and held 334,377 shares directly afterward, plus 371 shares indirectly. This indicates only a small portion of his total reported holdings was sold in these transactions.