AMSC (NASDAQ: AMSC) CEO reports 85,418 tax-cover share sales and 60K grant
Rhea-AI Filing Summary
AMERICAN SUPERCONDUCTOR CORP (AMSC) chairman, president and CEO Daniel P. McGahn reported both a stock grant and related share sales. On June 1, 2026, he received a restricted stock award of 60,000 common shares that will vest in three equal annual installments beginning on June 10, 2027.
On June 2–3, 2026, he sold 85,418 common shares in open-market transactions. A footnote states these sales were made to cover tax withholding obligations tied to vesting of restricted stock awards and were executed under a previously adopted Rule 10b5-1 trading plan. After these transactions, he holds 1,157,716 shares directly and 13,262 shares indirectly through the company’s 401(k) plan as of June 3, 2026.
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Insider Trade Summary 10b5-1
Net Seller: 25,418 shares
Net Sell
10 txns
Insider
McGahn Daniel P
Role
Chairman, President and CEO
Sold
85,418 shs ($4.31M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 7,075 | $48.3066 | $342K |
| Sale | Common Stock | 4,501 | $49.2541 | $222K |
| Sale | Common Stock | 500 | $50.288 | $25K |
| Sale | Common Stock | 817 | $50.99 | $42K |
| Sale | Common Stock | 13,762 | $49.451 | $681K |
| Sale | Common Stock | 27,900 | $50.6314 | $1.41M |
| Sale | Common Stock | 28,558 | $51.4586 | $1.47M |
| Sale | Common Stock | 2,305 | $52.1361 | $120K |
| Grant/Award | Common Stock | 60,000 | $0.00 | $0.00 |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 1,157,716 shares (Direct);
Common Stock — 13,262 shares (Indirect, By 401(k) plan)
Footnotes (11)
- F1. The restricted stock award was granted on June 1, 2026. The award will vest in three equal annual installments beginning June 10, 2027.
- F2. 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, as modified on February 26, 2026.
- F3. The sales were executed in multiple trades at prices ranging from $48.95-$49.87. 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 price at which the transaction was effected.
- F4. The sales were executed in multiple trades at prices ranging from $49.99-$50.98. 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 price at which the transaction was effected.
- F5. The sales were executed in multiple trades at prices ranging from $50.99-$51.945. 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 price at which the transaction was effected.
- F6. The sales were executed in multiple trades at prices ranging from $52.00-$52.44. 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 price at which the transaction was effected.
- F7. The sales were executed in multiple trades at prices ranging from $47.80-$48.76. 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.
- F8. The sales were executed in multiple trades at prices ranging from $48.87-$49.84. 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.
- F9. The sales were executed in multiple trades at prices ranging from $49.89-$50.82. 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.
- F10. Following all the transactions reported on this Form 4, the reporting person holds 1,157,716 shares directly.
- F11. Following all the transactions reported on this Form 4, the reporting person holds 13,262 shares indirectly through the company's 401(k) plan as of June 3, 2026.
Key Figures
Shares sold: 85,418 shares
Restricted stock award: 60,000 shares
Direct holdings after transactions: 1,157,716 shares
+3 more
6 metrics
Shares sold
85,418 shares
Open-market sales on June 2–3, 2026 to cover tax withholding
Restricted stock award
60,000 shares
Granted June 1, 2026; vests in three equal annual installments
Direct holdings after transactions
1,157,716 shares
Direct ownership following all reported Form 4 transactions
Indirect 401(k) holdings
13,262 shares
Indirect ownership via company 401(k) plan as of June 3, 2026
Net share change
−85,418 shares
Net buy/sell shares across reported transactions (net-sell)
Sample sale price
$50.99/share
One reported weighted average sale price for a June 3, 2026 trade
Key Terms
restricted stock award, tax withholding obligations, Rule 10b5-1 trading plan, open-market sale, +1 more
5 terms
restricted stock award financial
"The restricted stock award was granted on June 1, 2026."
A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.
tax withholding obligations financial
"shares sold by the reporting person to cover tax withholding obligations"
Rule 10b5-1 trading plan regulatory
"transaction was effected pursuant to a Rule 10b5-1 trading plan"
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.
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
indirectly through the company's 401(k) plan financial
"holds 13,262 shares indirectly through the company's 401(k) plan"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transactions did AMSC CEO Daniel P. McGahn report?
Daniel P. McGahn reported a grant of 60,000 restricted common shares and open-market sales of 85,418 shares. The filing explains the sales were to cover tax withholding obligations related to restricted stock vesting and were executed under a pre-established Rule 10b5-1 trading plan.
What stock award did AMSC grant to its CEO in June 2026?
On June 1, 2026, AMSC granted Daniel P. McGahn a restricted stock award of 60,000 common shares. According to the filing, the award will vest in three equal annual installments, starting on June 10, 2027, providing long-term, equity-based compensation tied to future service.
How will the AMSC CEO’s June 2026 restricted stock award vest?
The 60,000-share restricted stock award will vest in three equal annual installments. The filing specifies vesting begins on June 10, 2027, meaning one-third of the shares vest each year over three years, aligning compensation with continued service over that period.