UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 Tampa, FL 33612 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (813) 875-6600 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 14, 2025 FORM 8-K CURRENT REPORT TUHURA BIOSCIENCES, INC. (Exact name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Incorporation) Nevada 001-37823 99-0360497 (Commission File Number) (IRS Employer Identification No.) 10500 University Center Dr., Suite 110 Tampa, Florida 33612 (Addr ...

Completed the acquisition of Kineta, Inc. and its VISTA inhibiting monoclonal antibody (mAb), now named "TBS-2025;" planning to initiate a Phase 2 trial in relapsed/refractory NPM1-mutated Acute Myeloid Leukemia (AML) in combination with a menin inhibitor in 2H 2025Initiated a Phase 3 accelerated approval trial of IFx-2.0 as adjunctive therapy with Keytruda® (pembrolizumab) as a first-line therapy for advanced and metastatic Merkel cell carcinoma (MCC), conducted under Special Protocol Assessment (SPA) agre ...

Core Points - TuHURA Biosciences, Inc. has been added to the Russell 3000® Index and automatically included in the Russell 2000® Index as part of the 2025 annual reconstitution, effective June 27, 2025 [1][2] - The inclusion in the Russell indexes signifies the company's progress in its first year as a publicly traded entity and reflects its potential for continued development [2] - TuHURA is currently enrolling patients in a Phase 3 accelerated approval trial of its lead product IFx-2.0, which is being tested as an adjunctive therapy to Keytruda® for advanced or metastatic Merkel cell carcinoma [2][11] - The company has also acquired a novel anti-VISTA antibody from Kineta, Inc. and plans to advance it into a Phase 2 clinical trial for treating NMPL1-mutated Acute Myeloid Leukemia [2] Company Overview - TuHURA Biosciences, Inc. is focused on developing novel technologies to overcome resistance to cancer immunotherapy, addressing both primary and acquired resistance [10] - The company's lead product, IFx-2.0, is designed to enhance the effectiveness of checkpoint inhibitors [11] - TuHURA is also leveraging its Delta Opioid Receptor technology to create bi-specific antibody drug conjugates aimed at inhibiting immune suppression in the tumor microenvironment [12]

Acquisition Overview - TuHURA Biosciences has successfully completed the acquisition of Kineta, Inc., which includes a novel VISTA inhibiting monoclonal antibody (mAb) now named TBS-2025, enhancing TuHURA's late-stage immuno-oncology pipeline [1][2] - The acquisition allows TuHURA to initiate a Phase 2 randomized trial for TBS-2025 in the second half of 2025 [1] Financial Details - The completion of the acquisition unlocks the fourth tranche of funds from a $12.5 million aggregate PIPE financing announced on June 3, 2025 [1] - Each share of Kineta common stock was converted into the right to receive 0.185298 shares of TuHURA common stock, totaling 2,868,169 shares [3] Product Development - TBS-2025 is positioned to overcome acquired resistance to cancer immunotherapy, particularly in patients with NPM1 mutated acute myeloid leukemia (AML) [2] - The drug is being investigated in combination with a menin inhibitor, aiming to improve response rates and reduce relapse in AML patients [2] Mechanism of Action - VISTA is a significant immune checkpoint expressed on myeloid cells, contributing to immunosuppression in the tumor microenvironment [5] - TBS-2025 is designed to block VISTA, potentially enhancing T cell function and improving treatment outcomes in cancer therapy [5][6] Clinical Trials - TBS-2025 has shown promising results in a Phase 1/2 trial, demonstrating good tolerance and over 90% receptor occupancy [7] - The drug is administered intravenously every two weeks and has been tested both as a monotherapy and in combination with pembrolizumab [6][7] Company Background - TuHURA Biosciences focuses on developing technologies to address primary and acquired resistance to cancer immunotherapy [8] - The company is also working on bi-specific antibody drug conjugates targeting myeloid derived suppressor cells to enhance immune response [10]

Core Viewpoint - TuHURA Biosciences and Kineta have successfully completed stockholder meetings, approving a merger and key proposals, including an increase in authorized shares and reincorporation in Delaware [1][2]. Company Overview - TuHURA Biosciences, Inc. is a Phase 3 immuno-oncology company focused on developing technologies to overcome resistance to cancer immunotherapy [4]. - Kineta, Inc. is a clinical-stage biotechnology company dedicated to creating next-generation immunotherapies to address challenges in current cancer treatments [8]. Merger Details - TuHURA stockholders approved all proposals at the TuHURA Special Meeting, including increasing authorized shares to 200 million [1]. - Kineta stockholders also approved the merger with TuHURA at their Special Meeting [2]. - The merger is expected to close soon after satisfying remaining conditions [2]. Product Development - TuHURA's lead product, IFx-2.0, aims to overcome primary resistance to checkpoint inhibitors and is preparing for a Phase 3 trial in advanced Merkel Cell Carcinoma [5]. - TuHURA is also developing bi-specific antibody drug conjugates targeting Myeloid Derived Suppressor Cells to enhance immune response [6]. - Kineta's pipeline includes KVA12123, a VISTA blocking immunotherapy in Phase 1/2 trials, showing strong tumor growth inhibition in preclinical models [9]. Financial and Strategic Context - Kineta underwent a corporate restructuring in February 2024 to reduce expenses and preserve cash, including workforce reductions and halting new patient enrollment in trials [10]. - The merger aims to maximize stockholder value and enhance the combined company's capabilities in immunotherapy [10].

Group 1 - Halper Sadeh LLC is investigating TuHURA Biosciences, Inc. (NASDAQ: HURA) for potential violations related to its merger with Kineta, Inc. [1] - Vigil Neuroscience, Inc. (NASDAQ: VIGL) is under scrutiny due to its sale to Sanofi, where shareholders will receive $8.00 per share in cash and a contingent value right for an additional $2.00 per share based on the commercial sale of VG-3927 [1] - The firm may seek increased consideration for shareholders and additional disclosures regarding the proposed transactions [2] Group 2 - Shareholders are encouraged to contact Halper Sadeh LLC to discuss their legal rights and options at no cost [3] - The firm represents investors globally who have experienced securities fraud and corporate misconduct, recovering millions for defrauded investors [3]

Core Viewpoint - TuHURA Biosciences, Inc. has secured $12.5 million in a private offering to fund its operations, including a proposed merger with Kineta, Inc. and the initiation of a Phase 3 trial for its lead product, IFx-2.0 [1][5][9] Funding Details - The private placement involves the issuance of 4.6 million shares of common stock at a price of $2.65 per share, representing a 15% discount to the closing price on June 2, 2025 [1] - Approximately $9.0 million of the total offering will be purchased in four equal tranches based on the achievement of specific milestones, with the remaining $3.5 million to be funded by December 31, 2025 [2][7] - The initial closing of the offering is anticipated on June 4, 2025, subject to customary closing conditions [2] Use of Proceeds - The net proceeds from the offering will be used to fund the merger with Kineta, initiate the Phase 3 trial for IFx-2.0, advance Kineta's VISTA-inhibiting antibody to a Phase 2 trial, and cover other working capital needs [5][9] Milestones for Funding - The funding milestones include: - Notification from the FDA that the company is no longer under a partial clinical hold for the Phase 3 trial of IFx-2.0 [7] - Initiation of the Phase 3 trial for IFx-Hu2.0 [7] - Completion of the merger with Kineta [7] Company Overview - TuHURA Biosciences, Inc. is focused on developing novel technologies to overcome resistance to cancer immunotherapy, particularly through its lead product, IFx-2.0, which is designed to enhance the efficacy of existing treatments [11][12] - The company is also advancing a bi-specific antibody drug conjugate and antibody peptide conjugate targeting immune-suppressing cells in the tumor microenvironment [14]

Core Insights - TuHURA Biosciences is advancing its Phase 3 trial of IFx-Hu2.0 as an adjunctive therapy with Keytruda® for patients with advanced or metastatic Merkel cell carcinoma (MCC) [1][2][4] - The trial is designed under the FDA's Accelerated Approval Pathway and Special Protocol Assessment (SPA) agreement, aiming to address primary resistance to checkpoint inhibitors [1][3][4] Company Overview - TuHURA Biosciences, Inc. is focused on developing novel technologies to overcome resistance to cancer immunotherapy, particularly in the context of MCC [5][6] - The company’s lead product, IFx-Hu2.0, is an innate immune agonist intended to activate the immune response in patients who do not respond to existing checkpoint inhibitor therapies [3][6] Trial Design and Objectives - The Phase 3 trial will evaluate IFx-Hu2.0 (0.1 mg) administered weekly for three weeks alongside pembrolizumab (200 mg) every three weeks, compared to pembrolizumab plus placebo [4] - The trial aims to enroll 118 CPI-naïve patients across approximately 22 to 25 U.S. sites, with primary endpoints focusing on overall response rate (ORR) and secondary endpoints including progression-free survival (PFS) and safety [4] Clinical Background - Merkel cell carcinoma is characterized as a rare and aggressive tumor type, with poor survival rates for patients who do not respond to first-line checkpoint inhibitor therapy [3] - Previous Phase 1b trials indicated that IFx-Hu2.0 could achieve an overall response rate of 63% in patients who progressed on pembrolizumab or avelumab, with response durations ranging from 6 to 33 months [3]

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39473 TUHURA BIOSCIENCES, INC. (Exact Name of Registrant as Specified in its Charter) Nevada 99-0360497 ( State or other jurisdiction of incorporation or organization) 10500 University Center Dr., Suite 110 (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE ...