ASPEN AEROGELS INC (ASPN) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Low Risk
Limited dilution potential
Last updated: May 08, 2026

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 8.4% (2 years)
Historical Dilution Factor: minimal recent dilution
Outstanding Shares
83M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

ASPN currently has 82.7M outstanding shares. with minimal authorized share overhang for future dilution. The company has minimally diluted shareholders by 8.4% over the past 2 years.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 08, 2026

10-Q filing | 82.7M shares outstanding

83M 0
Mar 13, 2026

10-K filing | 82.3M shares outstanding

82M 0
Nov 06, 2025

10-Q filing | 82.4M shares outstanding

82M 0
Aug 07, 2025

10-Q filing | 82.2M shares outstanding

82M 0
May 08, 2025

10-Q filing | 82.1M shares outstanding

82M 0
Feb 27, 2025

10-K filing | 80.3M shares outstanding

80M 0
Nov 07, 2024

10-Q filing | 76.3M shares outstanding

76M 0
Aug 08, 2024

10-Q filing | 76.3M shares outstanding

76M 0
May 02, 2024

10-Q filing | 75.8M shares outstanding

76M 0
May 02, 2024

S-3 filing: This is an S-3 filing relating to the offer and sale of up to 21,070,518 shares of common stock by selling shareholders.

69M 700K
Mar 07, 2024

10-K filing | 69.4M shares outstanding

69M 0
Nov 02, 2023

10-Q filing | 69.3M shares outstanding

69M 0
Aug 03, 2023

10-Q filing | 69.2M shares outstanding

69M 0
May 04, 2023

10-Q filing | 69.2M shares outstanding

69M 0
Mar 16, 2023

10-K filing | 70.1M shares outstanding

70M 0
Mar 16, 2023

POS AM filing: Aspen Aerogels, Inc. files a POS AM to offer and sell securities, including common stock, preferred stock, and debt securities, from time to time in one or more offerings up to $250,000,000.

70M 0
Nov 07, 2022

10-Q filing | 39.5M shares outstanding

40M 9.5M
Aug 04, 2022

10-Q filing | 40.4M shares outstanding

40M 8.6M
May 10, 2022

10-Q filing | 36.1M shares outstanding

36M 13M
May 04, 2022

S-3 filing: This prospectus relates to the offer and sale by the selling shareholder of up to 6,344,585 shares of common stock of Aspen Aerogels, Inc., which consists of shares issuable upon conversion of Convertible Senior PIK Toggle Notes due 2027 and shares of Common Stock sold to the selling shareholder pursuant to that certain Securities Purchase Agreement, dated as of February 15, 2022.

33M 16M
Mar 01, 2022

10-K filing | 33.2M shares outstanding

33M 9.5M
Nov 04, 2021

10-Q filing | 33.1M shares outstanding

33M 9.6M
Sep 10, 2021

S-3 filing: This prospectus relates to the offer and sale of up to 3,462,124 shares of common stock by the selling shareholder.

33M 9.8M
Aug 04, 2021

10-Q filing | 32.9M shares outstanding

33M 6.3M
Jun 30, 2021

8-K filing: Aspen Aerogels, Inc. sold 3,462,124 shares of its common stock to an institutional and accredited investor at a purchase price of $21.663 per share, for aggregate gross proceeds of approximately $75.0 million in a private placement. ($75.0M proceeds)

28M 11M
May 04, 2021

10-Q filing | 28.4M shares outstanding

28M 11M
Mar 15, 2021

S-3 filing: Aspen Aerogels, Inc. is offering up to $250,000,000 of any combination of common stock, preferred stock, debt securities, warrants, rights, or units.

28M 11M
Mar 12, 2021

10-K filing | 28.3M shares outstanding

28M 0
Nov 05, 2020

10-Q filing | 26.9M shares outstanding

27M 0
Aug 05, 2020

10-Q filing | 26.8M shares outstanding

27M 0
May 04, 2020

10-Q filing | 26.6M shares outstanding

27M 0
Mar 06, 2020

10-K filing | 26.6M shares outstanding

27M 0
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