ASPN Shares Outstanding History — Aspen Aerogels Share Count Over Time

As of 5/5/2026 Aspen Aerogels has 82.88 million ASPN shares outstanding. Investors often track the ASPN shares outstanding history to compare shareholder return trends against the change in share count over time.

This page shows ASPN share count trends over time, with 48 historical shares outstanding datapoints presented, dating back to 7/31/2014.

Quick links: Shares Outstanding History Table  |  Shares Outstanding History Chart  |  About Aspen Aerogels
ASPN Shares Outstanding History



Below is a table of the ASPN shares outstanding history going back to 7/31/2014:

Date ASPN Shares Outstanding
7/31/201423.00M
10/31/201422.99M
3/2/201522.99M
4/30/201522.99M
7/31/201523.05M
10/31/201523.11M
3/1/201623.18M
4/30/201623.23M
7/31/201623.31M
10/31/201623.37M
3/1/201723.37M
5/1/201723.51M
8/1/201723.59M
11/1/201723.64M
2/27/201823.64M
5/1/201823.88M
8/1/201823.94M
11/6/201823.97M
3/7/201924.25M
5/1/201924.25M
7/31/201924.30M
10/30/201924.30M
3/5/202026.59M
5/4/202026.59M
8/4/202026.85M
11/5/202026.87M
3/9/202128.30M
5/3/202128.35M
8/3/202132.94M
11/4/202133.08M
2/25/202233.23M
5/9/202236.08M
8/4/202240.44M
11/4/202240.91M
3/15/202370.07M
5/4/202370.11M
8/3/202370.21M
10/31/202370.26M
3/5/202476.66M
5/1/202476.16M
8/8/202477.08M
11/7/202482.05M
2/25/202582.06M
5/6/202582.17M
8/5/202582.36M
11/4/202582.65M
3/10/202682.83M
5/5/202682.88M

Also see: ASPN Market Cap History
ASPN YTD Return
ASPN Historical Shares Outstanding:
+11.51% CAGR
ASPN Historical Shares Outstanding: +11.51% CAGR

Mouse over chart for data details
7/31/2014 ...5/5/2026
Aspen Aerogels, Inc. is an aerogel technology company, which provides sustainability and electrification solutions. Co.'s aerogel technology enables its customers and partners to achieve their own objectives around the global megatrends of resource efficiency, e-mobility and clean energy. Its segments include Energy Industrial and Thermal Barrier. Under Energy Industrial, it designs, develops and manufactures aerogel insulation used primarily in the energy industrial and sustainable insulation markets. Co. offers two aerogel insulation product lines for the energy industrial market, Pyrogel and Cryogel. We show 48 historical shares outstanding datapoints in our coverage of ASPN's shares outstanding history.

Understanding the changing numbers of ASPN shares outstanding — and comprehending the concept of differing number of shares outstanding in general comparing companies like ASPN versus peers — is critical for investors. Many "beginner" or "novice" investors will look at one stock trading at a price of $10 per share and another trading at a price of $20 per share and think the latter company is worth twice as much. Of course, that is a completely meaningless comparison without also knowing how many shares outstanding there are for each of the two companies. Furthermore, via issuance of new shares over time, or the repurchase of existing shares, the number of shares outstanding can fluctuate over the course of history. With this page we aim to empower investors researching ASPN by allowing them to research ASPN shares outstanding history as well as any other stock in our coverage universe.
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Video: Shares Outstanding Importance
Aspen Aerogels (ASPN) is categorized under the Materials sector; to help you further research historical shares outstanding numbers, below are some other companies in the same sector:

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