[Form of Right Certificate]

Certificate No. [R]-                                 ___________ Rights

NOT EXERCISABLE AFTER THE EXPIRATION DATE (AS DEFINED IN THE RIGHTS AGREEMENT (AS DEFINED BELOW)), OR EARLIER IF REDEEMED BY THE COMPANY. THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT $0.0001 PER RIGHT, ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT) AND BY ANY SUBSEQUENT HOLDER OF SUCH RIGHTS ARE NULL AND VOID AND NONTRANSFERABLE.

This certifies that                   , or registered assigns, is the registered owner of the number of Rights set forth above, each of which entitles the owner thereof, subject to the terms, provisions and conditions of the Section 382 Rights Agreement dated as of April 6, 2016 as it may be amended from time to time (the “Rights Agreement”), among CENTRUS ENERGY CORP., a Delaware corporation (the “Company”), COMPUTERSHARE INC. (“Computershare”) and COMPUTERSHARE TRUST COMPANY N.A. (together with Computershare, the “Rights Agent”), unless the Rights evidenced hereby shall have been previously redeemed or exchanged by the Company, to purchase from the Company at any time after the Distribution Date (as defined in the Rights Agreement) and at or prior to the earlier of (i) the Final Expiration Date (as defined in the Rights Agreement), (ii) the Redemption Date (as defined in the Rights Agreement), (iii) the Close of Business (as defined in the Rights Agreement) on the effective date of the repeal of Section 382 or any successor statute if the Board of the Directors of the Company determines that the Rights Agreement is no longer necessary or desirable for the preservation of NOLs (as defined in the Rights Agreement) or other Tax Benefits (as defined in the Rights Agreement), (iv) the Close of Business on the first day of a taxable year of the Company to which the Board of Directors of the Company determines that no NOLs or other Tax Benefits may be carried forward, or (v) the Close of Business on the 364^th Day Date (as defined in the Rights Agreement) (the “Expiration Date”), at the office or offices of the Rights Agent designated for such purpose, or its successors as Rights Agent, one one-thousandth (1/1,000th) of a fully paid, nonassessable share of Series A Participating Cumulative Preferred Stock, par value $1.00 per share, of the Company (the “Preferred Shares”), at a purchase price per one one-thousandth (1/1,000th) of a share equal to $100 (the “Purchase Price”) payable in cash, upon presentation and surrender of this Right Certificate with the Form of Election to Purchase duly executed.

The Purchase Price and the number and kind of shares which may be purchased upon exercise of each Right evidenced by this Right Certificate, as set forth above, are the Purchase Price and the number and kind of shares which may be so purchased as of [ ], 20[ ]. As provided in the Rights Agreement, the Purchase Price and the number and kind of shares which may be purchased upon the exercise of each Right evidenced by this Right Certificate are subject to modification and adjustment upon the happening of certain events.

If the Rights evidenced by this Right Certificate are at any time beneficially owned by an Acquiring Person or an Affiliate or Associate of an Acquiring Person (as such terms are defined in the

Rights Agreement), such Rights shall be null and void and nontransferable and the holder of any such Right (including any purported transferee or subsequent holder) shall not have any right to exercise or transfer any such Right.

This Right Certificate is subject to all the terms, provisions and conditions of the Rights Agreement, which terms, provisions and conditions are hereby incorporated herein by reference and made a part hereof and to which reference to the Rights Agreement is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities hereunder of the Rights Agent, the Company and the holders of the Right Certificates. Copies of the Rights Agreement are on file at the above-mentioned office of the Rights Agent and are also available from the Company upon written request.

This Right Certificate, with or without other Right Certificates, upon surrender at the office of the Rights Agent designated for such purpose, may be exchanged for another Right Certificate or Right Certificates of like tenor and date evidencing Rights entitling the holder to purchase a like aggregate number and kind of shares as the Rights evidenced by the Right Certificate or Right Certificates surrendered shall have entitled such holder to purchase. If this Right Certificate shall be exercised in part, the holder shall be entitled to receive upon surrender hereof another Right Certificate or Right Certificates for the number of whole Rights not exercised.

Subject to the provisions of the Rights Agreement, the Rights evidenced by this Right Certificate may be redeemed by the Company at its option at a redemption price (in cash or shares of Class A Common Stock, par value $0.10 per share, of the Company or other securities of the Company deemed by the Board of Directors of the Company to be at least equivalent in value) of $0.0001 per Right (which amount shall be subject to adjustment as provided in the Rights Agreement) at any time prior to the earlier of (i) the Distribution Date and (ii) the Expiration Date.

The Company may, but shall not be required to, issue fractions of Preferred Shares or distribute certificates which evidence fractions of Preferred Shares upon the exercise of any Right or Rights evidenced hereby, in each case other than fractions constituting one one thousandth (1/1,000th) of a share (as such fraction may be adjusted as provided in the Rights Agreement). In lieu of issuing fractional shares, the Company may elect to make a cash payment as provided in the Rights Agreement for fractions of a share other than one one-thousandth (1/1,000th) of a share (as such fraction may be adjusted as provided in the Rights Agreement) or any integral multiple thereof or to issue certificates or utilize a depository arrangement as provided in the terms of the Rights Agreement and the Preferred Shares.

No holder of this Right Certificate shall be entitled to vote or receive dividends or be deemed for any purpose the holder of the Preferred Shares or of any other securities of the Company which may at any time be issuable on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a stockholder of the Company, including, without limitation, any right to vote for the election of directors or upon any matter submitted to stockholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meetings or other actions affecting stockholders (except as provided in the Rights Agreement), or to receive dividends or other distributions or subscription rights, or otherwise, until the Right or Rights evidenced by this Right Certificate shall have been exercised as provided in accordance with the provisions of the Rights Agreement.

This Right Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by an authorized signatory of the Rights Agent.

WITNESS the facsimile signature of the proper officers of the Company and its corporate seal.

Dated as of:

CENTRUS ENERGY CORP.,

by                        

    

Name:

Title:

Attest:

                            

Name:

Title:

Date of countersignature:

Countersigned:

COMPUTERSHARE TRUST COMPANY N.A.

as Rights Agent,

by

Authorized Signatory

COMPUTERSHARE INC.,

as Rights Agent,

by

                            

Authorized Signatory

To the Rights Agent:

The undersigned hereby irrevocably elects to exercise              Rights represented by this Right Certificate to purchase the Preferred Shares (or other shares) issuable upon the exercise of such Rights and requests that certificates for such shares be issued in the name of:

Please insert social security

or other identifying number

    

If such number of Rights shall not be all the Rights evidenced by this Right Certificate, a new Right Certificate for the balance remaining of such Rights shall be registered in the name of and delivered to:

Please insert social security

or other identifying number

                                                        

Dated: ____________,

                            

Signature

Signature Guaranteed:

Signatures must be guaranteed by a participant in the Securities Transfer Agent Medallion Program, the Stock Exchanges Medallion Program or the New York Stock Exchange Market LLC Medallion Signature Program.

The undersigned hereby certifies that (1) the Rights evidenced by this Right Certificate are not being exercised by or on behalf of a person who is or was an Acquiring Person or an Affiliate or Associate thereof (as such terms are defined in the Rights Agreement), (2) this Right Certificate is not being sold, assigned or transferred by or on behalf of a Person who is or was an Acquiring Person or an Affiliate or Associate thereof (as such terms are defined in the Rights Agreement) and (3) after due inquiry and to the best knowledge of the undersigned, the undersigned did not acquire the Rights evidenced by this Right Certificate from any person who is or was an Acquiring Person or an Affiliate or Associate thereof.

Dated:         ,

Signature

Signature Guaranteed:

Signatures must be guaranteed by a participant in the Securities Transfer Agent Medallion Program, the Stock Exchanges Medallion Program or the New York Stock Exchange Market LLC Medallion Signature Program.

FOR VALUE RECEIVED          hereby sells, assigns and transfer unto

    

this Right Certificate, together with all right, title and interest therein, and does hereby irrevocably constitute and appoint      Attorney, to transfer the within Right Certificate on the books of the within-named Corporation, with full power of substitution.

Dated: ____________, ____

                        

Signature

Signature Guaranteed:

Signatures must be guaranteed by a participant in the Securities Transfer Agent Medallion Program, the Stock Exchanges Medallion Program or the New York Stock Exchange Market LLC Medallion Signature Program.

The undersigned hereby certifies that (1) the Rights evidenced by this Right Certificate are not being sold, assigned or transferred by or on behalf of a Person who is or was an Acquiring Person or an Affiliate or Associate thereof (as such terms are defined in the Rights Agreement), (2) this Right Certificate is not being sold, assigned or transferred to or on behalf of any such Acquiring Person, Affiliate or Associate and (3) after inquiry and to the best knowledge of the undersigned, the undersigned did not acquire the Rights evidenced by this Right Certificate from any Person who is or was an Acquiring Person or an Affiliate or Associate thereof (as such terms are defined in the Rights Agreement).

                    

Signature

The signature on the foregoing Form of Election to Purchase or Form of Assignment must correspond to the name as written upon the face of this Right Certificate in every particular, without alteration or enlargement or any change whatsoever.