Company: HURA
Filing Date: 2025-05-23
Form Type: 424B3
Source: 0001193125-25-125499
Chunk: 985

Company: TuHURA Biosciences, Inc./NV
Filing Date: 2025-05-23
Form: 424B3
Chunk 985
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 on the other hand, consisting of (i) $250,000 that was previously advanced by Parent to Company, (ii) $250,000 to be advanced by Parent to the Company on or
before May 15, 2025, and (iii) $250,000 to be advanced by Parent to Company on or before June 3, 2025 (with the advance in foregoing clause (iii) being contingent upon Parent’s receipt of (A) proceeds from the Concurrent
Investment or (B) proceeds from Parent stockholder warrant exercise payments due on May 30, 2025), in each case, for any expenses incurred by the Company in the ordinary course of business or expenses incurred in connection with the
Program Assets and approved by Parent, and such amount shall be paid by Parent to the Company no later than five (5) Business Days after the request is made (and invoice or proof of expense is provided to Parent) as long as no event of default
has occurred and is continuing under this Agreement as of the date of such request and so long as the parties hereto are then still working in good faith toward a Closing;”

5. CERTAIN VENDOR MATTERS. The Company hereby agrees that that the Company will at all times prior to and through the Closing take such
steps to ensure that, except as otherwise consented to by Parent in writing, the Master Development Services Agreement, dated July 9, 2021 (the “”), between the Company and Samsung Biologics Co. Ltd.
(“”) will remain in effect in accordance with its terms. Parent agrees that it will advance to Company the cost payable to Samsung Biologics for the two June 2025 stability studies proposed by Samsung Biologics (the
“”), and the Company will utilize the Samsung Advance solely to fund such stability studies. The Samsung Advance will constitute a Loaned Amount under the Merger Agreement and will reduce the amount that would
otherwise be advanced by Parent pursuant to Section 8.4(gg)(ii) of the Merger Agreement (as amended hereby).

6. NO FURTHER AMENDMENT; EFFECT OF AMENDMENT. This Amendment shall be deemed incorporated into, and form a part of, the Merger Agreement and have the same legal validity and effect as the Merger Agreement. Except as expressly and specifically amended hereby,
the Merger Agreement is not

2

otherwise being amended, modified or supplemented and all terms and provisions of the Merger
Agreement are and shall