SEC Form 425 filed by TuHURA Biosciences Inc.

Filed pursuant to Rule 425 under the

Securities Act of 1933, as amended, and

deemed filed under Rule 14a-12 under the

Securities Exchange Act of 1934, as amended

Filer: TuHURA Biosciences, Inc.

Filer’s Commission File No.: 001-37823

Subject Company: Kineta, Inc.

Commission File No.: 001-37695

TuHURA Biosciences, Inc. Announces Abstracts Accepted for Poster Presentation at the 2025 AACR Annual Meeting

TAMPA, FL, April 7, 2025 - TuHURA Biosciences, Inc. (NASDAQ:HURA) (“TuHURA”), a Phase 3 immune-oncology company developing novel technologies to overcome resistance to cancer immunotherapy, today announced that an abstract highlighting Kineta Inc.’s novel KVA12123 antibody and an abstract from Moffitt Cancer Center scientists examining the mechanisms of Company’s IFx-Hu2.0 therapy in advanced melanoma have been selected for poster presentation at the American Association for Cancer Research (AACR) Annual Meeting 2025, taking place April 25-30, 2025, at the McCormick Place Convention Center in Chicago, IL.

Details of the accepted abstracts are as follows:

Title: Initial results from a first in human phase 1 study of KVA12123, an anti-VISTA antibody, alone and in combination with pembrolizumab in patients with advanced solid tumors

Track: Experimental and Molecular Therapeutics

Session: PO.CT01.03 - Phase 0 and Phase I Clinical Trials

Abstract Number: CT041/ 20

Presenter: Thierry Guillaudeux, Ph.D., Chief Scientific Officer of Kineta

Date and Time: April 28, 2025, 9:00 AM – 12:00 PM ET

Location: Section 29

Title: Mechanistic insights into IFx-Hu2.0 responses in the first human trial after prior anti-PD-1 therapy failure

Track: Immunology

Session: PO.IM01.07 - Enhanced Antibodies, TCR Constructs, Cytokines and Chimeric Proteins

Abstract Number: 3428 / 23

Presenter: Joseph Markowitz, M.D., Ph.D.

Date and Time: April 28, 2025, 2:00 PM – 5:00 PM ET

Location: Section 35

For more and to view the abstract, visit the AACR Annual Meeting website.

As previously announced, on December 11, 2024, TuHURA entered into a definitive agreement with Kineta, Inc. (OTC Pink: KANT) (“Kineta”), in which TuHURA would acquire Kineta, including the rights to Kineta’s novel KVA12123 antibody, for a combination of cash and shares of TuHURA common stock via a merger transaction. The merger is currently targeted to close in Q2 2025 pending the satisfaction of funding conditions and other closing conditions.

About TuHURA Biosciences, Inc.

TuHURA Biosciences, Inc. (Nasdaq: HURA) is a Phase 3 immuno-oncology company developing novel technologies to overcome primary and acquired resistance to cancer immunotherapy, two of the most common reasons cancer immunotherapies fail to work or stop working in the majority of patients with cancer.

TuHURA’s lead innate immune agonist, IFx-2.0, is designed to overcome primary resistance to checkpoint inhibitors. TuHURA is preparing to initiate a single randomized placebo-controlled Phase 3 registration trial of IFx-2.0 administered as an adjunctive therapy to Keytruda^® (pembrolizumab) compared to Keytruda^® plus placebo in first line treatment for advanced or metastatic Merkel Cell Carcinoma.

In addition to its innate immune agonist product candidates, TuHURA is leveraging its Delta Opioid Receptor technology to develop first-in-class, bi-specific antibody drug conjugates and antibody peptide conjugates targeting Myeloid Derived Suppressor Cells to inhibit their immune-suppressing effects on the tumor microenvironment to prevent T cell exhaustion and acquired resistance to checkpoint inhibitors and cellular therapies.

For more information, please visit tuhurabio.com and connect with TuHURA on Facebook, X, and LinkedIn.

IMPORTANT ADDITIONAL INFORMATION

In connection with the proposed acquisition by merger of Kineta, Inc. (“Kineta”) by TuHURA (the “Merger”), TuHURA filed with the U.S. Securities and Exchange Commission (the “SEC”) a registration statement on Form S-4, dated February 7, 2025 (the “Registration Statement”), which contains a preliminary joint proxy statement of Kineta and TuHURA and a preliminary prospectus of TuHURA (the “Joint Proxy Statement/Prospectus”), and TuHURA and Kineta may file with the SEC other relevant documents regarding the Merger. Investors and securityholders of TuHURA and Kineta are urged to read the Joint Proxy Statement/Prospectus and such other materials carefully when they become available because they will contain important information about TuHURA, Kineta, and the proposed Merger. This press release is not a substitute for the definitive Joint Proxy Statement/Prospectus, when it becomes available, or any other documents that TuHURA may file with the SEC or send to securityholders in connection with the proposed Merger.

A definitive copy of the Joint Proxy Statement/Prospectus will be mailed to Kineta and TuHURA stockholders when that document is final. Investors and stockholders will be able to obtain free copies of the documents filed or that will be filed with the SEC by TuHURA, when they become available, through the website maintained by the SEC at www.sec.gov. The documents filed by TuHURA with the SEC may also be obtained free of charge at TuHURA’s website at www.tuhurabio.com or upon written request to: TuHURA, 10500 University Drive, Suite 110, Tampa, Florida 33612.

NO OFFER OR SOLICITATION

This press release is not a proxy statement or solicitation of a proxy, consent or authorization with respect to any securities or in respect of the Merger and is not intended to and does not constitute an offer to sell or the solicitation of an offer to buy the securities of TuHURA or Kineta, nor shall there be any sale of any such securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

PARTICIPANTS IN THE SOLICITATION

TuHURA and Kineta and their respective directors and officers and other members of management may, under SEC rules, be deemed to be participants in the solicitation of proxies from stockholders in connection with the Merger and other matters that may be set forth in the Joint Proxy Statement/Prospectus. Information about TuHURA’s directors and executive officers is set forth in TuHURA’s filings with the SEC, including TuHURA’s Form 10-K filed on March 31, 2025. Additional information regarding the direct and indirect interests, by security holdings or otherwise, of those persons and other persons who may be deemed participants in the solicitation of proxies in the Merger may be obtained by reading the Joint Proxy Statement/Prospectus when it becomes available. You may obtain free copies of these documents as described above under “IMPORTANT ADDITIONAL INFORMATION”.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This press release contains certain “forward-looking statements” within the meaning of, and subject to the safe harbor created by, Section 27A of the Securities Act, Section 21E of the Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. These Forward-looking statements are based only on our current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, projections, anticipated events

and other future conditions. In some cases you can identify these statements by forward-looking words such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “could,” “should,” “would,” “project,” “plan,” “expect,” “goal,” “seek,” “future,” “likely” or the negative or plural of these words or similar expressions. Examples of such forward-looking statements include but are not limited to express or implied statements regarding TuHURA’s expectations, hopes, beliefs, intentions or strategies regarding the future and include, without limitation, statements regarding TuHURA’s IFx-Hu2.0 product candidate and anticipated Phase 3 trial, its tumor microenvironment modulators development program, its potential acquisition by merger of Kineta Inc. and the statements about Kineta’s VISTA-101 development program and statements regarding the closing conditions for the transaction, TuHURA’s needs and expectations regarding its existing capital resources and its need for additional capital, and any developments or results in connection therewith and the anticipated regulatory pathway and timing of the foregoing development programs, studies and trials. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. You are cautioned that such statements are not guarantees of future performance and that actual results or developments may differ materially from those set forth in these forward-looking statements. Factors that could cause actual results to differ materially from these forward-looking statements are described in detail in our registration statements, reports and other filings with the SEC, which are available on the combined company’s website, and at www.sec.gov.

The forward-looking statements and other information contained in this press release are made as of the date hereof, and TuHURA does not undertake any obligation to update publicly or revise any forward-looking statements or information, whether as a result of new information, future events or otherwise, unless so required by applicable securities laws. Nothing herein shall constitute an offer to sell or the solicitation of an offer to buy any securities.

Investor Contact:

Dan Dearborn

CFO

813-875-6600