Company: XOMAP
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001193125-25-230383
Chunk: 80

Company: XOMA Royalty Corp
Filing Date: 2025-10-03
Form: 424B5
Chunk 80
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 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 subscription rights agreement containing the terms of the subscription rights that we are offering before the issuance of the subscription rights. The following summary of material provisions of the subscription rights is subject to, and qualified in its entirety by reference to, all of the provisions of the form of subscription rights agreement. We urge you to read the applicable prospectus supplements and any related free writing prospectuses related to the subscription rights that we may offer under this prospectus, and the complete form of subscription rights agreement. General This summary, together with the additional information we include in any applicable prospectus supplements, summarizes the material terms and provisions of the subscription rights that we may offer under this prospectus, which consist of subscription rights to purchase our common stock, preferred stock, depositary shares and/or debt securities in one or more series. Subscription rights may be offered independently or together with our common stock, preferred stock, depositary shares, debt securities and/or warrants offered by any prospectus supplement, and may be attached to or separate from those securities. While the terms we have summarized below will generally apply to any future subscription rights we may offer pursuant to this prospectus, we will describe the particular terms of any subscription rights that we may offer in more detail in the applicable prospectus supplements. The terms of any subscription rights we offer under a prospectus supplement may differ from the terms we describe below. The applicable prospectus supplements relating to any subscription rights that we offer will include specific terms of any offering of subscription rights for which this prospectus is being delivered, including the following, to the extent applicable:

| • |     | the date for determining the persons entitled to participate in the subscription rights distribution; |

| • |     | the price, if any, per subscription right; |

| • |     | the exercise price payable for each share of common stock, share of preferred stock, depositary share or debt 
 security upon the exercise of the rights;                                                                     |

| • |     | the number of subscription rights issued or to be issued to each holder; |

| • |     | the number and terms of the shares of common stock, shares of preferred stock, depositary shares or debt 
 securities that may be purchased per each subscription right;                                            |

| • |     | the extent to which the subscription rights are