Company: XOMAP
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001193125-25-230383
Chunk: 81

Company: XOMA Royalty Corp
Filing Date: 2025-10-03
Form: 424B5
Chunk 81
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 transferable; |

| • |     | any other terms of the subscription rights, including the terms, procedures and limitations relating to the 
 exchange and exercise of the subscription rights;                                                           |

| • |     | the respective dates on which the holder’s ability to exercise the subscription rights will commence and 
 will expire;                                                                                             |

| • |     | the number of subscription rights outstanding, if any; |

| • |     | a discussion of any material U.S. federal income tax considerations applicable to the subscription rights; |

32

| • |     | the extent to which the subscription rights may include an over-subscription privilege with respect to        
 unsubscribed securities or an over-allotment privilege to the extent the securities are fully subscribed; and |

| • |     | if applicable, the material terms of any standby underwriting or purchase arrangement entered into by us in 
 connection with the offering of such subscription rights.                                                   |

The description in the applicable prospectus supplements of any subscription rights that we may offer will not necessarily be complete and will be qualified in its entirety by reference to the applicable subscription rights agreement and/or subscription rights certificate, which will be filed with the SEC in connection therewith. Therefore, you should carefully consider the actual provisions of the subscription rights, the subscription rights agreement and the applicable securities. Governing Law Unless we otherwise specify in the applicable prospectus supplement, the subscription rights, any subscription rights agreement and any subscription rights certificates will be governed by and construed in accordance with the laws of the State of New York. 33

DESCRIPTION OF CONTINGENT VALUE RIGHTS The following is a general description of the terms of the contingent value rights we may issue from time to time unless we provide otherwise in the prospectus supplement. Particular terms of any contingent value rights we offer will be described in the prospectus supplement relating to such contingent value rights. The terms of any contingent value rights offered under a prospectus supplement may differ from the terms described below. We will file as an exhibit to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the SEC, the form of contingent value rights agreement containing the terms of the contingent value rights that we are offering before the issuance of the contingent value rights. The following summary of material provisions of the contingent value rights is subject to, and qualified in its entirety by reference to, all of the provisions of the form of contingent value rights agreement. We urge you to read the applicable prospectus supplements and any related free writing prospect