Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 754

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 754
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 Del Mar (BC) 2013 Amended and Restated Stock Option Plan refers to the Company’s previous equity 
 compensation plan.                                                                                   |

| (2) | The balance of 144 shares of common stock available for issuance under the 2017 Plan as of June 30, 2024, 
 is net of stock options previously exercised.                                                             |

The maximum number of shares of Company common stock with respect to which any one participant may be granted awards during any calendar year is 8% of the Company’s fully diluted shares of common stock on the date of grant (excluding the number of shares of common stock issued under the 2017 Plan and/or the Legacy Plan or subject to outstanding awards granted under the 2017 Plan and/or the Legacy Plan). No award will be granted under the 2017 Plan on, or after, July 7, 2027. Stock options During the year ended June 30, 2024, a total of 89 stock options to purchase shares of common stock were granted to directors and officers of the Company. The 89 options granted have an exercise price of $4.655 per share and vest as to 25% on August 30, 2024, with the remaining portion vesting in equal monthly installments over a period of 36 months from September 30, 2024 to September 30, 2027. All of the options to purchase shares of common stock granted have a 10-yearterm and are subject to cancellation upon the grantees’ termination of service for the Company, with certain exceptions. F-21

The following table sets forth changes in stock options outstanding under all plans:

| Balance – June 30, 2022 |     | Number of      
 stock          
 options        
 outstanding    
 (in thousands) | 176 |   |     | Weighted 
 average  
 exercise 
 price    |  87.05 |
|:------------------------|:----|:---------------|----:|:--|:----|:---------|-------:|
| Granted                 |     |                |  78 |   |     |          |   8.79 |
| Expired                 |     |                | (56 | ) |     |          | 102.65 |
| Balance – June 30, 2023 |     |                | 198 |   |     |          |  51.71 |
| Granted                 |     |                |  89 |   |     |          |