BNP Paribas Asset Management UK reports 0.9% ASP Isotopes (ASPI) stake in 13G/A

Rhea-AI Filing Summary

BNP Paribas Asset Management UK Ltd has filed an amended Schedule 13G reporting beneficial ownership of 944,326 shares of ASP Isotopes Inc. common stock, representing 0.9% of the outstanding class as of December 31, 2025. The firm reports sole voting and dispositive power over all of these shares and confirms they are held in the ordinary course of business, not to change or influence control of ASP Isotopes.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

ASP Isotopes Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

00218A105

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 00218A105

1

Names of Reporting Persons

BNP Paribas Asset Management UK Ltd

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED KINGDOM

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 944,326.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 944,326.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

944,326.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.9 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ASP Isotopes Inc.
(b)	Address of issuer's principal executive offices: 2200 ROSS AVENUE, SUITE 4575E, DALLAS, TEXAS, 75201.
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 944.326.00
(b)	Percent of class: 0.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 944,326.00
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 944,326.00
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BNP Paribas Asset Management UK Ltd

Signature:	Timothy Trotter
Name/Title:	CCO, US Regulatory Matters
Date:	02/09/2026

FAQ

What does BNP Paribas Asset Management UK Ltd report in this ASPI Schedule 13G/A?

BNP Paribas Asset Management UK Ltd reports beneficial ownership of 944,326 ASP Isotopes common shares, equal to 0.9% of the class. The firm holds sole voting and dispositive power over these shares as of December 31, 2025 under an amended Schedule 13G filing.

How much of ASP Isotopes (ASPI) does BNP Paribas Asset Management own?

BNP Paribas Asset Management UK Ltd beneficially owns 944,326 ASP Isotopes common shares, representing 0.9% of the outstanding class. The position is below the 5% threshold and is reported with sole voting and sole dispositive power over all reported shares.

Is BNP Paribas Asset Management seeking control of ASP Isotopes (ASPI)?

The filing states the ASP Isotopes shares were acquired and are held in the ordinary course of business, not to change or influence control. It also notes the holding is not part of any transaction aimed at influencing control, except for specified proxy nomination activities.

What type of SEC filing is this for ASP Isotopes (ASPI)?

This is an amended Schedule 13G/A, a beneficial ownership report used by certain institutional investors. It discloses that BNP Paribas Asset Management UK Ltd holds 0.9% of ASP Isotopes common stock with sole voting and dispositive power over 944,326 shares.

Who signed the ASP Isotopes (ASPI) Schedule 13G/A for BNP Paribas Asset Management?

The Schedule 13G/A was signed by Timothy Trotter, identified as CCO, US Regulatory Matters, on behalf of BNP Paribas Asset Management UK Ltd. The signature certifies the accuracy and completeness of the beneficial ownership information presented in the report.