Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 699

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 699
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 different blocks of Kineta Common Stock at different times or at different prices, such U.S. holder must determine its adjusted tax basis and 
 holding period separately with respect to each block of Kineta Common Stock.                                                                                                                                                                      |

| • |     | generally, no loss will be recognized by a U.S. holder as a result of exchanging its Kineta Common Stock for the                     
 merger consideration pursuant to the Mergers (except as discussed below with respect to cash received in lieu of fractional shares); |

| • |     | the initial tax basis of the TuHURA Common Stock that a U.S. holder receives pursuant to the Mergers will                                                                                                                                              
 generally equal the aggregate adjusted tax basis in the shares of the Kineta Common Stock surrendered in exchange therefor pursuant to the Mergers plus the amount of gain recognized (as described above, but excluding any gain attributable to cash 
 received in lieu of fractional shares), minus the sum of the cash received and the fair market value of the U.S. holder’s portion of the Contingent Payment Right, as determined for U.S. federal income tax purposes;                                 |

| • |     | the holding period of the shares of TuHURA Common Stock that a U.S. holder receives pursuant to the Mergers will              
 generally include the holding period of the Kineta Common Stock surrendered in exchange therefor pursuant to the Mergers; and |

| • |     | a U.S. holder’s initial tax basis in that U.S. holder’s portion of the Contingent Payment Right will                                                                      
 equal the fair market value of such rights as of the date of the Mergers, and the holding period for such rights will begin on the day following the date of the Mergers. |

If a U.S. holder receives cash in lieu of any fractional share of TuHURA Common Stock pursuant to the Mergers, the U.S. holder generally will recognize gain or loss equal to the difference between such proceeds and the tax basis allocated to such fractional share. Generally, such gain or loss will constitute capital gain or loss if such U.S. holder’s Kineta Common Stock is a capital asset at the effective time of the merger and will be long-term capital gain or loss if such U.S. holder’s Kineta Common Stock has been held for more than one year as of such effective time. Receipt of the Contingent Payment Rights and Payments Thereunder The U.S. federal income tax treatment of the receipt of the Contingent Payment Rights and any payments