Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 395

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 395
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 and other transactions contemplated thereby may be abandoned by action taken or authorized by the board of directors of the terminating party at any time prior to the Effective Time or the Second Effective Time (with any termination by TuHURA also being an effective termination by Merger Subs):

| • |     | by the mutual written consent of TuHURA and Kineta; |

| • |     | by either TuHURA and Kineta if: the Mergers have not been consummated by June 30, 2025 (subject to possible                                                                                                                                               
 extension), the End Date; provided that any breach of the Merger Agreement by the terminating party has not been the primary cause of the failure of the Mergers to have occurred on or before the End Date and such action or failure to act constitutes 
 a breach of the Merger Agreement. TuHURA may, on or prior to June 30, 2025, upon written notice to Kineta, extend the End Date to no later than July 31, 2025, provided that as a condition to making such extension, TuHURA shall advance to             
 Kineta an amount equal to $250,000 to fund Kineta expenses, which amount shall not increase the Loaned Amount. If the SEC has not declared effective under the Securities Act this Registration Statement by the date which is thirty (30) days           
 prior to the End Date, then either the Company or TuHURA will be entitled to extend the End Date for an additional thirty (30) days;                                                                                                                      |

| • |     | by either TuHURA or Kineta if: (i) a law has been enacted, entered, promulgated, enforced or deemed 
 applicable by any governmental entity of competent jurisdiction remaining in effect prohibiting or  |

250

| making illegal the consummation of the Mergers or (ii) any court of competent jurisdiction or other governmental entity has issued a judgment, order, injunction, rule or decree, or taken any                                                
 other action permanently restraining, enjoining, making illegal or otherwise prohibiting any of the transactions contemplated by the Merger Agreement and such judgment, order, injunction, rule, decree or other action has become final and 
 nonappealable;                                                                                                                                                                                                                                |

| • |     | by either TuHURA or Kineta if: the Kineta Stockholder Approval has not have been obtained at the Kineta special                                                                                                                                       
 meeting (or any adjournment or postponement thereof); provided, however, that the right to terminate