Company: XOMAP
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001193125-25-230383
Chunk: 13

Company: XOMA Royalty Corp
Filing Date: 2025-10-03
Form: 424B5
Chunk 13
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 including the Series B Depositary Shares, is qualified in its entirety by reference to the provisions of the Articles of Incorporation, Bylaws and the certificates of designation of each series of the Preferred Stock, copies of which have been filed as exhibits to the Company’s Quarterly Report on Form 10-Qfiled on August 13, 2025, and the applicable provisions of Nevada corporate law. 8.625% Series A Cumulative Perpetual Preferred Stock .We have designated 984,000 shares of our Preferred Stock as Series A Preferred Stock. The Series A Preferred Stock will rank, as to dividend and other distribution rights and rights upon our liquidation, dissolution or winding up:

| • |     | senior to all classes or series of our Common Stock and to all other equity securities issued by us expressly 
 designated as ranking junior to the Series A Preferred Stock;                                                 |

| • |     | senior with respect to the payment of dividends and other distributions and on parity with respect to the                                                                                                                                             
 distribution of assets upon our liquidation, dissolution or winding up with our Series X Preferred Stock and on parity with any future class or series of our equity securities expressly designated as ranking on parity with the Series A Preferred 
 Stock;                                                                                                                                                                                                                                                |

| • |     | junior to all equity securities issued by us with terms specifically providing that those equity securities rank                                                                            
 senior to the Series A Preferred Stock with respect to the payment of dividends and other distributions and the distribution of assets upon our liquidation, dissolution or winding up; and |

| • |     | effectively junior to all our existing and future indebtedness (including indebtedness convertible into our                                                                          
 Common Stock or Preferred Stock) and to the indebtedness and other liabilities of (as well as any preferred equity interests held by others in) our existing or future subsidiaries. |

Dividends and Other Distributions. We will pay cumulative cash dividends on the Series A Preferred Stock, when and as declared by our board of directors, at the rate of 8.625% of the $25.00 liquidation preference per share per year (equivalent to $2.15625 per year). Dividends will be payable quarterly in arrears, on or about the 15th day of January, April, July and October; provided that if any dividend payment date is not a business day, then the dividend which would otherwise have been payable on that dividend payment date may be paid on the immediately preceding business day or the next succeeding business day, and no interest, additional dividends