Exhibit 4.2

Description of the Company’s Common Stock Registered

Under Section 12 of the Exchange Act of 1934

The following is a summary of the current material terms of our capital stock. Because it is only a summary, it does not contain all information that may be important to you. Therefore, you should read carefully the more detailed provisions of our certificate of incorporation and bylaws.

As of May 10, 2024, US Nuclear Corp has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): (1) our Common Stock,

Description of Common Stock

The following description of our Common Stock is a summary and does not purport to be complete. It is subject to and qualified in its entirety by reference to our Amended and Restated Articles of Incorporation (the “Articles of Incorporation”) and our Amended and Restated Bylaws (the “Bylaws”), each of which are incorporated by reference as an exhibit to the Annual Report on Form 10-K of which this Exhibit 4.1 is a part.

Authorized Capital Shares

Our authorized capital shares consist of 100,000,000 shares of common stock, $0.0001 par value per share (“Common Stock”). The outstanding shares of our Common Stock are fully paid and nonassessable.

Voting Rights

Holders of Common Stock are entitled to one vote per share on all matters voted on by the stockholders, including the election of directors. Our Common Stock does not have cumulative voting rights.

Dividend Rights

Subject to the rights of holders of outstanding shares of Preferred Stock, if any, the holders of Common Stock are entitled to receive dividends, if any, as may be declared from time to time by the Board of Directors in its discretion out of funds legally available for the payment of dividends.

Liquidation Rights

Subject to any preferential rights of outstanding shares of Preferred Stock, if any, holders of Common Stock will share ratably in all assets legally available for distribution to our stockholders in the event of dissolution.

Other Rights and Preferences

Our Common Stock has no sinking fund or redemption provisions or preemptive, conversion or exchange rights. Holders of Common Stock may act by unanimous written consent.

Listing

The Common Stock is traded on OTC:QB under the trading symbol “UCLE.”

The Company believes that the provisions described above apply to actions arising under the Securities Act and the Exchange Act. There is uncertainty as to whether a court would enforce such provisions, as Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder.

The foregoing summary is subject to the full text of our certificate of incorporation and bylaws.