ASPN (ASPN) investor files to sell 5,593 restricted common shares

Rhea-AI Filing Summary

A shareholder of ASPN filed to sell common stock under Rule 144 through Morgan Stanley Smith Barney LLC Executive Financial Services. The filing covers 5,593 common shares with an aggregate market value of $35,291.83 to be sold on the NYSE.

The shares derive from restricted stock issued by the company, including 3,761 shares from a grant dated 09/13/2025 and 1,832 shares from a grant dated 03/05/2026. These entries are listed as securities to be sold, not new issuances.

Key Figures

Shares to be sold: 5,593 shares Aggregate market value: $35,291.83 Restricted stock grant shares: 3,761 shares +1 more

4 metrics

Shares to be sold 5,593 shares Total ASPN common shares covered by the Rule 144 filing

Aggregate market value $35,291.83 Market value of 5,593 ASPN common shares to be sold

Restricted stock grant shares 3,761 shares ASPN restricted stock dated 09/13/2025 listed as securities to be sold

Restricted stock grant shares 1,832 shares ASPN restricted stock dated 03/05/2026 listed as securities to be sold

Key Terms

Rule 144, Restricted Stock, securities to be sold, aggregate market value

4 terms

Rule 144 regulatory

"A shareholder of ASPN filed to sell common stock under Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"Common | 09/13/2025 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

securities to be sold financial

"144: Securities To Be Sold"

aggregate market value financial

"covers 5,593 common shares with an aggregate market value of $35,291.83"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/10/2026 - 04:26 PM Accepted by SEC EDGAR 08/10/2026 - 04:26 PM Learn about SEC filing dates

FAQ

What does the ASPN Form 144 filing disclose?

The filing discloses a plan to sell 5,593 common shares of ASPN under Rule 144 through Morgan Stanley Smith Barney LLC, with an aggregate market value of $35,291.83 on the NYSE.

How many ASPN shares are covered by this Rule 144 sale?

The Rule 144 notice covers 5,593 ASPN common shares. These consist of 3,761 shares from restricted stock dated 09/13/2025 and 1,832 shares from restricted stock dated 03/05/2026.

What is the market value of ASPN shares in this Form 144?

The total market value of the ASPN common shares covered by this Rule 144 filing is $35,291.83. This value corresponds to the planned sale of 5,593 shares on the NYSE.

What type of ASPN securities are being sold under this Form 144?

The securities are common shares of ASPN originating from restricted stock grants. Two restricted stock awards dated 09/13/2025 and 03/05/2026 are listed as sources of the shares to be sold.

Which broker is handling the ASPN Rule 144 sale?

Morgan Stanley Smith Barney LLC Executive Financial Services is listed as the broker for the ASPN Rule 144 transaction, with its office at 1 New York Plaza, 8th Floor, New York, NY 10004.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	5593	35291.83	82988784	08/10/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/13/2025	Restricted Stock	Issuer			3761	09/13/2025	Not Applicable
Common	03/05/2026	Restricted Stock	Issuer			1832	03/05/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)