ASP Isotopes Inc.

05/15/2026 | Press release | Distributed by Public on 05/15/2026 15:19

Late Filing Notice (Form NT 10-Q)

OMB APPROVAL

OMB Number: 3235-0058

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Expires: September 30, 2028

Estimated average burden

Washington, D.C. 20549

hours per response.......2.50

FORM 12b-25

SEC FILE NUMBER

001-41555

CUSIP NUMBER

NOTIFICATION OF LATE FILING

00218A105

(Check one):

☐

Form 10-K

☐

Form 20-F

☐

Form 11-K

☒

Form 10-Q

☐

Form 10-D

☐

Form N-CEN

☐

Form N-CSR

For Period Ended: March 31, 2026

☐

Transition Report on Form 10-K

☐

Transition Report on Form 20-F

☐

Transition Report on Form 11-K

☐

Transition Report on Form 10-Q

For the Transition Period Ended: __________________________________________

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

ASP Isotopes Inc.

Full Name of Registrant

Former Name if Applicable

2200 Ross Avenue, Suite 4575E

Address of Principal Executive Office (Street and Number)

Dallas, Texas 75201

City, State and Zip Code

PART II - RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

☒

(a)

The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense;

(b)

The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and

(c)

The accountant's statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

PART III - NARRATIVE

State below in reasonable detail the reasons why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-CEN, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

(Attach extra Sheets if Needed)

The Registrant could not complete the filing of its Quarterly Report on Form 10-Q for the quarter ended March 31, 2026 due to a delay in obtaining and compiling information required to be included in its Form 10-Q, which delay could not be eliminated by the Registrant without unreasonable effort and expense. In accordance with Rule 12b-25 promulgated under the Securities Exchange Act of 1934, the Registrant will file its Form 10-Q no later than the fifth calendar day following the prescribed due date.

PART IV - OTHER INFORMATION

(1)
Name and telephone number of person to contact in regard to this notification

Heather Kiessling

(214)

432-8219

(Name)

(Area Code)

(Telephone Number)

(2)
Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If answer is no, identify report(s). Yes ☒ No ☐
(3)
Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? Yes ☐ No ☒

If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

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ASP Isotopes Inc.

(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized.

Date: May 15, 2026

By:

/s/ Heather Kiessling

Heather Kiessling

Chief Financial Officer

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ASP Isotopes Inc. published this content on May 15, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on May 15, 2026 at 21:19 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]