Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 313

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 313
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eta stockholders will need the control number found on their proxy card or voting instruction form in order to access the Kineta special meeting website. Matters to Be Considered at the Kineta special meeting At the Kineta special meeting, you will be asked to consider and vote on the following proposals:

| • |     | to adopt the Merger Agreement Proposal; |

| • |     | to approve on a non-binding, advisory basis, the Compensation Proposal; 
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| • |     | to approve the Kineta Adjournment Proposal. |

Recommendation of the Kineta Board of Directors The Kineta Board of Directors unanimously recommends that Kineta stockholders vote:

| • |     | Proposal 1: “FOR” the Merger Agreement Proposal; |

| • |     | Proposal 2: “FOR” the Compensation Proposal; and |

| • |     | Proposal 3: “FOR” the Kineta Adjournment Proposal. |

After careful consideration, the Kineta Board of Directors unanimously (i) determined that the Merger Agreement and the Mergers are advisable, fair to and in the best interests of Kineta and its stockholders; (ii) approved and adopted the Merger Agreement and the Mergers; (iii) directed that the Merger Agreement be submitted for adoption at a meeting of Kineta stockholders; and (iv) resolved to recommend that Kineta stockholders vote in favor of the adoption of the Merger Agreement. See also the section entitled “The Mergers—Recommendation of the Kineta Board of Directors; Kineta’s Reasons for the Transactions”. Record Date for the Kineta Special Meeting and Voting Rights The Record Date to determine who is entitled to receive notice of and to vote at the Kineta special meeting or any adjournments or postponements thereof is May 15, 2025. As of the close of business on May 15, 2025, there were 13,540,355 shares of Kineta Common Stock issued and outstanding and entitled to vote at the Kineta 196

special meeting. Each Kineta stockholder is entitled to one vote for any matter properly brought before the Kineta special meeting for each share of Kineta Common Stock such holder owned at the close of business on the Record Date. Only Kineta stockholders of record at the close of business on the Record Date are entitled to receive notice of and to vote at the Kineta special meeting and any and all adjournments or postponements thereof. Quorum;