Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 317

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 317
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 received by 11:59 p.m., Eastern Time, on June 22, 2025. To reduce administrative costs and help the environment by conserving natural resources, Kineta asks that you vote through the Internet or by telephone, both of which are available 24 hours a day. Notwithstanding the above, if you hold your shares in “street name” and you submit voting instructions to your bank, broker or other nominee, your instructions must be received by the bank, broker or other nominee before the deadline set forth in the information from your bank, broker or other nominee on how to submit voting instructions. If you deliver a proxy pursuant to this joint proxy statement/prospectus, but do not specify a choice with respect to any proposal set forth in this joint proxy statement/prospectus, your underlying shares of Kineta Common Stock will be voted on such uninstructed proposal in accordance with the recommendation of the Kineta Board of Directors. Kineta does not expect that any matter other than the proposals listed above will be brought before the Kineta special meeting and the Kineta Bylaws provide that the only business that may be conducted at the Kineta special meeting are those proposals brought before the meeting pursuant to this joint proxy statement/prospectus. 198

Revocability of Proxies Any stockholder giving a proxy has the right to revoke it, including any proxy card you may have previously submitted, before the proxy is voted at the Kineta special meeting by any of the following actions:

| • |     | sending a signed written notice of revocation to Kineta’s corporate secretary; |

| • |     | voting again by the Internet or telephone at a later time before the Closing of the voting facilities at 11:59 
 p.m., Eastern Time, on the date before the Kineta special meeting;                                             |

| • |     | submitting a properly signed proxy card with a later date; or |

| • |     | attending virtually and voting at the Kineta special meeting via the Kineta special meeting website. |

Attendance virtually at the Kineta special meeting will not in and of itself constitute revocation of a proxy. A revocation or later-dated proxy received by Kineta after the vote will not affect the vote. Kineta’s corporate secretary’s mailing address is: 7683 SE 27th Street, Suite 481, Mercer Island, Washington 98040, Attention: Corporate Secretary. If the Kineta special meeting is postponed or adjourned, it will not affect the ability of holders of