Key facts
- This page summarizes Mann Paul Elliot's Form 4 filing for ASP Isotopes Inc. (ASPI).
- 8 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 10 Sep 2025, 21:00.
Mann Paul Elliot - 08 Sep 2025 Form 4 Insider Report for ASP Isotopes Inc. (ASPI)
- Reporting relationship
- Chief Executive Officer, Director, 10%+ Owner
- Issuer ticker
- ASPI
- Reported as of
- 08 Sep 2025
- Net transaction value
- -$1,371,519
- SEC form
- 4
- Accepted by SEC
- 10 Sep 2025, 21:00:31 UTC
- Prior SEC filing
- 17 Apr 2025
- Next SEC filing
- 28 Nov 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Donald Ainscow, as attorney-in-fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Mann Paul Elliot filed Form 4 for ASP Isotopes Inc. (ASPI) on 10 Sep 2025.
Change
- Previous filing in this sequence was filed on 17 Apr 2025.
- Current net transaction value: -$1,371,519.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001744816
Primary reporting owner
Mann Paul Elliot
- Relationship
- Chief Executive Officer, Director, 10%+ Owner
- Address
- C/O ASP ISOTOPES INC., 601 PENNSYLVANIA AVENUE NW, SUITE 900, WASHINGTON
- Signature
- /s/ Donald Ainscow, as attorney-in-fact
- Signature date
- 10 Sep 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ASPI
transaction
Common Stock
Sale
- Transaction value
- $691,408
- Shares
- -81,076
- Change %
- -1.1%
- Price
- $8.53
- Shares after
- 7,234,378
- Date
- 08 Sep 2025
- Ownership
- Direct
- Footnotes
- F1, F2
ASPI
transaction
Common Stock
Options Exercise
- Transaction value
- $432,000
- Shares
- +216,000
- Change %
- +3%
- Price
- $2.00
- Shares after
- 7,450,378
- Date
- 09 Sep 2025
- Ownership
- Direct
ASPI
transaction
Common Stock
Tax liability
- Transaction value
- $431,993
- Shares
- -50,644
- Change %
- -0.68%
- Price
- $8.53
- Shares after
- 7,399,734
- Date
- 09 Sep 2025
- Ownership
- Direct
- Footnotes
- F3
ASPI
transaction
Common Stock
Options Exercise
- Transaction value
- $2,000,000
- Shares
- +1,000,000
- Change %
- +14%
- Price
- $2.00
- Shares after
- 8,399,734
- Date
- 09 Sep 2025
- Ownership
- Direct
ASPI
transaction
Common Stock
Tax liability
- Transaction value
- $1,999,995
- Shares
- -234,466
- Change %
- -2.8%
- Price
- $8.53
- Shares after
- 8,165,268
- Date
- 09 Sep 2025
- Ownership
- Direct
- Footnotes
- F3
ASPI
transaction
Common Stock
Sale
- Transaction value
- $680,123
- Shares
- -81,077
- Change %
- -0.99%
- Price
- $8.39
- Shares after
- 8,084,191
- Date
- 09 Sep 2025
- Ownership
- Direct
- Footnotes
- F1, F4
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
ASPI
transaction
Derivative
Employee Stock Option (right to buy)
Options Exercise
- Transaction value
- $0
- Shares
- -216,000
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 09 Sep 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 216,000
- Exercise price
- $2.00
- Footnotes
- F5
ASPI
transaction
Derivative
Employee Stock Option (right to buy)
Options Exercise
- Transaction value
- $0
- Shares
- -1,000,000
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 09 Sep 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,000,000
- Exercise price
- $2.00
- Footnotes
- F6
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 6 footnotes
Footnote F1
Represents "sell to cover" sales effected pursuant to a Rule 10b5-1 trading plan adopted by the filing person on June 9, 2025 to cover tax withholding obligations in connection with the vesting of restricted stock awards.
Footnote F2
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.135 to $8.575, inclusive. The reporting person undertakes to provide the Company, any stockholder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in Footnote 2.
Footnote F3
Represents shares withheld by the Company in connection with net share settlement to satisfy the exercise price associated with the reporting person's exercise of employee stock options. No shares were sold by the reporting person to satisfy the exercise price or any tax liability.
Footnote F4
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.135 to $8.575, inclusive. The reporting person undertakes to provide the Company, any stockholder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in Footnote 2.
Footnote F5
These options vested in a single installment 12 months after the grant date. The option was granted on April 4, 2022.
Footnote F6
These options vested in thirty-six equal installments beginning on the last day of month after the option's grant date. The option was granted on June 10, 2022.