Margaret D. Klein

Insider

First SEC filing: April 4, 2024 · Latest: April 4, 2024

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 5 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

5 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 3, 2026	AMSC	A	3,116	—	—	19,492 Direct	+19.03%	Acquired	(price as of 2026-08-20)
April 3, 2025	AMSC	A	2,639	—	—	15,876 Direct	+19.94%	Acquired	(price as of 2026-08-20)
April 3, 2024	AMSC	A	3,840	—	—	13,237 Direct	+40.86%	Acquired	(price as of 2026-08-20)
April 5, 2023	AMSC	A	9,397	—	—	9,397 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 4, 2022	AMSC	P	500	$5.56	$2,780	16,376 Direct	+3.15%	Acquired	458.8% (price as of 2026-08-20)
June 10, 2022	AMSC	A	10,282	—	—	10,282 Direct	—	Acquired	(price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
June 10, 2022	AMSC	Stock Options (Right to Buy)	Common Stock (10,282)	$5.92	June 10, 2032	10,282	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).