AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Medium Risk
Moderate dilution risk
Last updated: May 27, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 27.47% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
44M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

AMSC currently has 43.9M outstanding shares. with minimal authorized share overhang for future dilution. The company has significantly diluted shareholders by 27.47% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 27, 2026

10-K filing | 43.9M shares outstanding

44M 0
Nov 05, 2025

10-Q filing | 45.2M shares outstanding

45M 0
Jul 30, 2025

10-Q filing | 45.2M shares outstanding

45M 0
May 21, 2025

10-K filing | 37.7M shares outstanding

38M 0
Feb 05, 2025

10-Q filing | 38.5M shares outstanding

38M 0
Oct 30, 2024

10-Q filing | 37.5M shares outstanding

37M 0
Aug 06, 2024

10-Q filing | 35.7M shares outstanding

36M 0
May 29, 2024

10-K filing | 36.9M shares outstanding

37M 0
Jan 30, 2024

S-3 filing: American Superconductor Corporation files an S-3 to offer and sell up to $250,000,000 in the aggregate of common stock and debt securities from time to time in one or more offerings.

29M 0
Jan 24, 2024

10-Q filing | 29.1M shares outstanding

29M 0
Nov 01, 2023

10-Q filing | 28.8M shares outstanding

29M 0
Aug 09, 2023

10-Q filing | 28.3M shares outstanding

28M 0
May 31, 2023

10-K filing | 27.8M shares outstanding

28M 0
Feb 01, 2023

10-Q filing | 28.0M shares outstanding

28M 0
Nov 01, 2022

10-Q filing | 27.9M shares outstanding

28M 0
Aug 03, 2022

10-Q filing | 27.6M shares outstanding

28M 0
Jun 01, 2022

10-K filing | 27.2M shares outstanding

27M 0
Feb 02, 2022

10-Q filing | 28.5M shares outstanding

28M 0
Nov 08, 2021

10-Q filing | 27.3M shares outstanding

27M 0
Aug 04, 2021

10-Q filing | 26.8M shares outstanding

27M 0
Jun 02, 2021

POS AM filing: American Superconductor Corporation may offer and sell up to $250,000,000 in the aggregate of common stock and debt securities from time to time in one or more offerings.

25M 0
Jun 02, 2021

10-K filing | 28.0M shares outstanding

28M 0
Feb 03, 2021

10-Q filing | 25.5M shares outstanding

25M 0
Nov 04, 2020

10-Q filing | 27.6M shares outstanding

28M 0
Oct 05, 2020

8-K filing: American Superconductor Corporation purchased all of the issued and outstanding shares of capital stock of Northeast Power Systems, Inc. and membership interests of Northeast Power Realty, LLC from the Selling Stockholders for $26,000,000 in cash and 873,657 shares of the Company's common stock. ($26.0M proceeds)

21M 0
Jun 02, 2020

10-K filing | 21.1M shares outstanding

21M 0
Feb 05, 2020

10-Q filing | 21.2M shares outstanding

21M 0
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