ASPI files Rule 144 notice for 300,000 restricted shares

ASPI notice of proposed sale under Rule 144.

Rhea-AI Filing Summary

ASPI notice of proposed sale under Rule 144. A reporting person indicated a proposed sale of 300,000 shares of Common Stock that were acquired as a Restricted Stock Award on 09/06/2024. The filing also shows 8,438 shares sold in the past three months for $45,894.28. Shares outstanding are listed as 125,903,447 as of 04/13/2026.

Insights

Securities Compliance Analyst

Rule 144 notice documents a proposed resale of compensation shares and recent small disposals.

The filing lists 300,000 shares acquired as a Restricted Stock Award on 09/06/2024, indicating a planned resale under resale conditions applicable to restricted securities.

Recent activity included the sale of 8,438 shares for $45,894.28; cashflow treatment and plan mechanics are not detailed in the excerpt.

Key Figures

Shares proposed for resale: 300,000 shares Shares sold in past 3 months: 8,438 shares Proceeds from recent sale: $45,894.28 +1 more

4 metrics

Shares proposed for resale 300,000 shares acquired as Restricted Stock Award on 09/06/2024

Shares sold in past 3 months 8,438 shares disposition dated 03/06/2026

Proceeds from recent sale $45,894.28 consideration for 8,438 shares sold

Shares outstanding 125,903,447 shares as of 04/13/2026

Key Terms

Restricted Stock Award, Form 144, Issuer

3 terms

Restricted Stock Award financial

"Acquired as compensation --Restricted Stock Award on 09/06/2024"

A restricted stock award is company shares given to an employee or executive that cannot be sold or fully owned until certain conditions—like staying with the company for a set time or hitting performance targets—are met. Think of it as a gift that only becomes yours after you fulfill specific obligations; for investors, these awards matter because they can increase the total shares outstanding when they vest, reveal how management is being paid and motivated, and create potential selling pressure when restrictions lift.

Form 144 regulatory

"CONTENT METADATA indicates form_type: "144""

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Issuer regulatory

"Issuer listed in connection with the Restricted Stock Award"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did ASPI's Form 144 report about planned sales?

The filing reports a proposed resale of 300,000 Common Stock shares acquired as a Restricted Stock Award on 09/06/2024. It lists the shares and acquisition date but does not specify timing or method of resale.

How many shares were sold recently by the reporting person in ASPI filings?

The excerpt records a sale of 8,438 Common Stock shares in the past three months for $45,894.28. This is presented as historical disposal activity in the filing.

What is the shares outstanding figure shown in the ASPI excerpt?

The content lists 125,903,447 shares outstanding as of 04/13/2026. This number appears on the securities information line in the provided excerpt.

Were the 300,000 shares registered as issuer or selling-holder shares?

The filing labels the 300,000 shares as acquired as compensation (a Restricted Stock Award) with the Issuer listed; the excerpt does not explicitly state the planned seller or distribution mechanics.

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

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Accepted by SEC EDGAR 04/13/2026 - 09:56 PM Learn about SEC filing dates

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	0001951275
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ASP Isotopes Inc.
SEC File Number	001-41555
Address of Issuer	2200 Ross Avenue Suite 4575E Dallas TEXAS 75201
Phone	(214) 4328219
Name of Person for Whose Account the Securities are To Be Sold	Ainscow Robert
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	OFFICER

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 Stock	Independent Trading Group (ITG) Inc. 33 Yonge Street Suite 420 Toronto A6 M5E 1G4	25000	112000	125903447	04/13/2026	NASDAQ

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 Stock	09/06/2024	Acquired as compensation --Restricted Stock Award	Issuer			300000	09/06/2024	Equity Compensation

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Ainscow Robert c/o ASP Isotopes Inc. 2200 Ross Avenue, Suite 4575E Dallas TX 75201	Common Stock	03/06/2026	8438	45894.28

144: Remarks and Signature

Remarks	The sale of shares reported in this Form 144 is expected to be sold on the date indicated pursuant to a Rule 10b5-1 trading plan. The Aggregate Market Value of the shares to be sold is based on the closing market price of $4.48 on April 10, 2026.
Date of Notice	04/13/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/13/2024
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	/s/ Robert Ainscow
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)