Company: XOMAP
Filing Date: 2025-10-03
Form Type: 424B5
Source: 0001193125-25-230393
Chunk: 33

Company: XOMA Royalty Corp
Filing Date: 2025-10-03
Form: 424B5
Chunk 33
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 per share of Series B 
 Preferred Stock;                                                                                             |

| • |     | the name and address of the paying agent and the conversion agent; |

| • |     | the procedures that the holders of the depositary shares representing interests in the Series B Preferred Stock      
 must follow to exercise the Delisting Event Conversion Date or Change of Control Conversion Date, as applicable; and |

| • |     | the last date on which holders of the depositary shares representing interests in the Series B Preferred Stock               
 may withdraw shares surrendered for conversion and the procedures that such holders must follow to effect such a withdrawal. |

We will issue a press release for publication on the Dow Jones & Company, Inc., Business Wire, PR Newswire or Bloomberg Business News (or, if these organizations are not in existence at the time of issuance of the press release, such other news or press organization as is reasonably calculated to broadly disseminate the relevant information to the public), or post notice on our website, in any event prior to the opening of business on the first business day following any date on which we provide the notice described above to the holders of the depositary shares representing interests in the Series B Preferred Stock. S-24

To exercise the Delisting Event Conversion Right or Change of Control Conversion Right, as applicable, each holder of depositary shares representing interests in the Series B Preferred Stock will be required to deliver, on or before the close of business on the Delisting Event Conversion Date or Change of Control Conversion Date, as applicable, the depositary receipts or certificates, if any, evidencing the interests in Series B Preferred Stock to be converted, duly endorsed for transfer, together with a written conversion notice completed, to the depositary. The conversion notice must state:

| • |     | the “Delisting Event Conversion Date” or “Change of Control Conversion Date,” as                                                                                                                                                                 
 applicable, which will be a business day fixed by our board of directors that is not fewer than 20 days nor more than 35 days after the date on which we provide the notice described above to the holders of the depositary shares representing 
 interests in the Series B Preferred Stock;                                                                                                                                                                                                       |

| • |     | the number of depositary shares representing interests in the shares of Series B Preferred Stock to be converted; 
 and                                                                                                               |

| • |     | that the depositary shares are to be converted pursuant to the applicable provisions of the Series B Preferred 
 Stock.                                                                                                         |

The “Common Stock Price” for any Change of Control will be: