UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 12b-25

NOTIFICATION OF LATE FILING

(Check one):

☐ Form 10-K ☐ Form 20-F ☐ Form 11-K ☒ Form 10-Q

☐ Form 10-D ☐ Form N-SAR ☐ Form N-CSR

For Period Ended: September 30, 2024

For the Transition Period Ended:

Read Instruction Before Preparing Form. Please Print or Type.

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

US NUCLEAR CORP.

(Full Name of Registrant)

7051 ETON AVENUE CANOGA PARK CA 91303

(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)

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.)

PART III — NARRATIVE

State below in reasonable detail 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.

US Nuclear Corp. (the “Company”) is unable to file, without unreasonable effort or expense, its Form 10-Q for the period ended September 30, 2024. Additional time is needed for the Company to compile and analyze supporting documentation in order to complete the Form 10-Q and in order to permit the Company’s independent registered public accounting firm to complete its review of the consolidated financial statements included in the Form 10-Q. The Company intends to file the Form 10-Q as soon as possible.

PART IV — OTHER INFORMATION

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

(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.

SIGNATURES

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

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