Company: XOMAP
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001193125-25-230383
Chunk: 64

Company: XOMA Royalty Corp
Filing Date: 2025-10-03
Form: 424B5
Chunk 64
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 date of the transaction, the board of directors of the corporation approved either the business 
 combination or the transaction which resulted in the stockholder becoming an interested stockholder;         |

| • |     | upon completion of the transaction that resulted in the stockholder becoming an interested stockholder, the                                                                                                                                    
 interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding for purposes of determining the number of shares outstanding (a) shares owned by persons who are 
 directors and also officers, and (b) shares owned by                                                                                                                                                                                           |

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| employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or |

| • |     | on or subsequent to the date of the transaction, the business combination is approved by the board and authorized                                                                                          
 at an annual or special meeting of stockholders, and not by written consent, by the affirmative vote of at least 66 2/3% of the outstanding voting stock which is not owned by the interested stockholder. |

Generally, a “business combination” includes a merger, asset or stock sale, or other transaction resulting in a financial benefit to the interested stockholder. An “interested stockholder” is a person who, together with affiliates and associates, beneficially owns, or is an affiliate of the corporation and within three years prior to the determination of interested stockholder status did own, 15% or more of a corporation’s outstanding voting securities. We expect the existence of this provision to have an anti-takeover effect with respect to transactions our Board does not approve in advance. Transfer Agent and Registrar The transfer agent and registrar for our common stock is American Stock Transfer & Trust Company, LLC. Listing on the Nasdaq Global Market Our common stock is listed on the Nasdaq Global Market under the symbol “XOMA,” our Series A Preferred Stock is listed on the Nasdaq Global Market under the symbol “XOMAP” and our Series B Depositary Shares are listed on the Nasdaq Global Market under the symbol “XOMAO.” 19

DESCRIPTION OF DEPOSITARY SHARES

The following is a general description of the terms of the depositary shares we may issue from time to time unless we provide otherwise in the prospectus
supplement. Particular terms of any depositary share we offer will be described in the prospectus supplement relating to such depositary shares. The terms of any depositary