Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 160

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 160
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ships;     |

| • |     | stockholders may not take action by written consent, but may only take action at an annual or special meeting of 
 stockholders (subject to the rights of holders of any series of preferred stock then outstanding);               |

| • |     | advance notice requirements for nominations for election to the board of directors or for proposing matters that 
 can be acted on at stockholder meetings;                                                                         |

| • |     | stockholders are not entitled to the right to cumulate votes in the election of directors; |

| • |     | limitations on who may call a special meeting of stockholders; and |

| • |     | the board of directors is authorized to issue preferred stock without stockholder approval, which could be used                                                                                           
 to institute a “poison pill” that would work to dilute the stock ownership of a potential hostile acquirer, effectively deterring acquisitions that have not been approved by TuHURA’s Board of Directors |

Moreover, because the TuHURA will be incorporated in Delaware, it will be subject to the provisions of Section 203 of the DGCL, which generally prohibits a Delaware corporation from engaging in a business combination with an interested stockholder (which is generally defined to include any person that owns 15% or more of the corporation’s outstanding voting stock and their affiliates and associates) for three years following the time that the person becomes an “interested stockholder” unless, among other exclusions, (i) prior to the date the person becomes an interested stockholder, the board of directors approves either the business combination or the transaction which resulted in the stockholder becoming an interested stockholder, (ii) upon consummation of the transaction which resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced (excluding certain shares), or (iii) the business combination is approved by the board of directors and by the affirmative vote of at least two-thirdsof the outstanding voting stock that is not owned by the interested stockholder at a meeting and not by written consent. Although TuHURA believe these provisions collectively will provide for an opportunity to receive higher bids by requiring potential acquirors to negotiate with the TuHURA’s Board of Directors, they would apply even if the offer may be considered beneficial by some stockholders. In addition, these provisions may frustrate or prevent any attempts by TuHURA’s stockholders to replace or remove then current management by making