ASP Isotopes officer plans $46.6K stock sale

The expected transaction includes an amount for income tax liabilities resulting from quarterly vesting of a restricted stock award.

Rhea-AI Filing Summary

ASP Isotopes Inc. (ASPI) officer Robert Ainscow is expected to sell 22,500 common shares on October 14, 2026, under a Rule 10b5-1 trading plan. The stated aggregate market value is $46,575.00, based on the $2.07 closing market price on that date. The sale includes an amount for satisfying income tax liabilities from quarterly vesting of a previously granted 400,000-share restricted stock award, dated April 14, 2025.

Key Figures

Expected shares for sale: 22,500 common shares Aggregate market value: $46,575.00 Closing market price: $2.07 per share +5 more

8 metrics

Expected shares for sale 22,500 common shares Expected sale on October 14, 2026

Aggregate market value $46,575.00 Expected sale on October 14, 2026

Closing market price $2.07 per share October 14, 2026

Restricted stock award 400,000 shares Award dated April 14, 2025

Shares sold 25,000 common shares September 2, 2026

Reported sale amount $59,057.56 September 2, 2026

Shares sold 8,438 common shares September 8, 2026

Reported sale amount $97,625.00 September 8, 2026

Key Terms

Rule 10b5-1 trading plan, restricted stock award, quarterly vesting, Aggregate Market Value

4 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock award financial

"quarterly vesting of a previously granted restricted stock award"

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.

quarterly vesting financial

"resulting from the quarterly vesting"

Aggregate Market Value financial

"The Aggregate Market Value of the shares to be sold"

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.

FAQ

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

How many ASPI shares is Robert Ainscow expected to sell?

Robert Ainscow, an officer of ASP Isotopes Inc. (ASPI), is expected to sell 22,500 common shares on October 14, 2026, under a Rule 10b5-1 trading plan. The stated aggregate market value is $46,575.00, based on the $2.07 closing market price on that date.

What were Robert Ainscow's recent ASPI stock sales?

The notice lists sales of 25,000 common shares on September 2, 2026, for $59,057.56, and 8,438 common shares on September 8, 2026, for $97,625.00.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/14/2026 - 09:50 PM EDT Accepted by SEC EDGAR 10/14/2026 - 09:50 PM EDT 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	2144328219
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	22500	46575.00	153309380	10/14/2026	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	04/14/2025	Acquired as compensation --Restricted Stock Award	Issuer			400000	04/14/2025	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	09/02/2026	25000	59057.56
Ainscow Robert c/o ASP Isotopes Inc. 2200 Ross Avenue Suite 4575E Dallas TX 75201	Common Stock	09/08/2026	8438	97625.00

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 and includes an amount for the purpose of satisfying the Reporting Person's income tax liabilities resulting from the quarterly vesting of a previously granted restricted stock award for 400,000 shares pursuant to an issuer equity incentive plan. The Aggregate Market Value of the shares to be sold is based on the closing market price of $2.07 on October 14, 2026.
Date of Notice	10/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/09/2025
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)