Kura Oncology Reports First Quarter 2021 Financial Results - Menin inhibitor KO-539 continues to demonstrate compelling clinical activity, favorable safety/tolerability and a wide therapeutic window - - KOMET-001 trial a

Kura Oncology Reports First Quarter 2021

- Menin inhibitor KO-539 continues to demonstrate compelling clinical activity, favorable safety/tolerability and a wide therapeutic window -

- KOMET-001 trial amended to include Phase 1b expansion cohorts enriched with NPM1-mutant and KMT2A-rearranged relapsed/refractory AML patients -

- Data from Phase 2 trial of tipifarnib in HRAS mutant head and neck squamous cell carcinoma highlighted in Journal of Clinical Oncology -

- $603.9 million in cash, cash equivalents and investments provide runway into 2024 -

- Management to host webcast and conference call today at 4:30 p.m. ET -

SAN DIEGO, May 6, 2021 - Kura Oncology, Inc. (Nasdaq: KURA), a clinical-stage biopharmaceutical company committed to realizing the promise of precision medicines for the treatment of cancer, today reported first quarter 2021 financial results and provided a corporate update.

"We believe KO-539 is well-positioned as a potentially best-in-class and first-in-class menin inhibitor," said Troy Wilson, Ph.D., J.D., President and Chief Executive Officer of Kura Oncology. "This confidence is supported by a growing body of clinical data, including compelling activity, a favorable safety and tolerability profile and a wide therapeutic window. As such, we intend to conduct a comprehensive clinical development strategy for KO-539, both as a monotherapy and in combination, aimed at providing the greatest benefit to patients with acute leukemia, and we are well funded to execute on this strategy."

"A critical component of our KO-539 development plan is the determination of an optimal Phase 2 dose," continued Dr Wilson. "Given the wide therapeutic window of KO-539, we have amended our KOMET-001 trial to include two genetically enriched Phase 1b expansion cohorts. This should enable us to maximize the benefit-risk for KO-539 in our target patient populations and better inform an optimal dose for Phase 2 and beyond. Enrollment in these Phase 1b expansion cohorts is expected to begin mid-year, and we look forward to sharing our progress as we work to bring this important therapeutic option to patients."

Conference Call and Webcast

Kura's management will host a webcast and conference call at 4:30 p.m. ET / 1:30 p.m. PT today, May 6, 2021, to discuss the financial results for the first quarter 2021 and provide a corporate update. The live call may be accessed by dialing (888) 771-4371 for domestic callers and (847) 585-4405 for international callers and entering the conference code: 50156205. A live webcast and archive of the call will be available online from the investor relations section of the company website at www.kuraoncology.com.

Kura Oncology is a clinical-stage biopharmaceutical company committed to realizing the promise of precision medicines for the treatment of cancer. The Company's pipeline consists of small molecule drug candidates that target cancer signaling pathways.

KO-539, a potent and selective menin inhibitor, is currently in a Phase 1/2 clinical trial (KOMET-001) and targeting patients with relapsed/refractory acute myeloid leukemia, including patients with NPM1 mutations. Tipifarnib, a potent, selective and orally bioavailable farnesyl transferase inhibitor, has received Breakthrough Therapy Designation for the treatment of patients with HRAS mutant head and neck squamous cell carcinoma and is currently in a registration-directed study (AIM-HN) in patients with this devastating disease. Kura is also developing a next-generation farnesyl transferase inhibitor, which is intended to target innovative biology and larger oncology indications through rational combinations. For additional information about Kura, please visit the Company's website at www.kuraoncology.com.

Forward-Looking Statements

This news release contains certain forward-looking statements that involve risks and uncertainties that could cause actual results to be materially different from historical results or from any future results expressed or implied by such forward-looking statements. Such forward-looking statements include statements regarding, among other things, the efficacy, safety and therapeutic potential of Kura's product candidates, tipifarnib and KO-539, progress and expected timing of Kura's drug development programs and clinical trials and submission of regulatory filings, the presentation of data from clinical trials, plans regarding regulatory filings and future clinical trials, the regulatory approval path for tipifarnib, the strength of Kura's balance sheet and the adequacy of cash on hand. Factors that may cause actual results to differ materially include the risk that compounds that appeared promising in early research or clinical trials do not demonstrate safety and/or efficacy in later preclinical studies or clinical trials, the risk that Kura may not obtain approval to market its product candidates, uncertainties associated with performing clinical trials, regulatory filings, applications and other interactions with regulatory bodies, risks associated with reliance on third parties to successfully conduct clinical trials, the risks associated with reliance on outside financing to meet capital requirements, and other risks associated with the process of discovering, developing and commercializing drugs that are safe and effective for use as human therapeutics, and in the endeavor of building a business around such drugs. You are urged to consider statements that include the words "may," "will," "would," "could," "should," "believes," "estimates," "projects," "promise," "potential," "expects," "plans," "anticipates," "intends," "continues," "designed," "goal," or the negative of those words or other comparable words to be uncertain and forward-looking. For a further list and description of the risks and uncertainties the Company faces, please refer to the Company's periodic and other filings with the Securities and Exchange Commission, which are available at www.sec.gov. Such forward-looking statements are current only as of the date they are made, and Kura assumes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.

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