Kura Oncology Reports Second Quarter 2018 Financial Results and Provides Corporate Update - Update from ongoing Phase 2 trial of tipifarnib in HRAS mutant head and neck squamous cell carcinomas (HNSCC) to be presented at

Kura Oncology Reports Second Quarter 2018 Financial Results and Provides Corporate Update

- Update from ongoing Phase 2 trial of tipifarnib in HRAS mutant head and neck squamous cell carcinomas (HNSCC) to be presented at ESMO 2018 -

- Startup activities initiated for upcoming registration-directed trial of tipifarnib in HRAS mutant HNSCC -

- Biomarker-enriched Phase 2 trial of tipifarnib in peripheral T-cell lymphoma (PTCL) actively enrolling, data expected by year end -

- Company believes existing capital resources sufficient to fund current operations through 2021 -

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

SAN DIEGO, August 6, 2018 - Kura Oncology, Inc., (Nasdaq: KURA) a clinical-stage biopharmaceutical company focused on the development of precision medicines for oncology, today reported second quarter 2018 financial results and provided a corporate update.

"I am very pleased with the continued progress we made over the past quarter, with a particular focus on operational execution," said Troy Wilson, Ph.D., J.D., President and Chief Executive Officer of Kura Oncology. "We have enhanced our leadership team, improved our ability to screen and identify patients with HRAS mutations, positioned our pipeline to create additional opportunities and strengthened our balance sheet through a successful public offering. We believe the proceeds from this offering along with our existing funds give us the resources to advance our pipeline through a series of potential milestones, including data from a registration-directed trial of our lead drug candidate tipifarnib in HRAS mutant HNSCC."

Conference Call and Webcast

Kura's management will host a webcast and conference call today at 4:30 p.m. ET / 1:30 p.m. PT today, August 6, 2018, to discuss the financial results for the second quarter of 2018 and provide a corporate update. The live call may be accessed by dialing (877) 516-3514 for domestic callers and (281) 973-6129 for international callers

and entering the conference code: 1588245. A live webcast of the call will be available from the Investors and Media section of the company website at www.kuraoncology.com, and will be archived there for 30 days.

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 where there is a strong scientific and clinical rationale to improve outcomes by identifying those patients most likely to benefit from treatment. Kura's lead drug candidate is tipifarnib, a farnesyl transferase inhibitor, which is currently being studied in multiple Phase 2 clinical trials in solid tumor and hematologic indications. The company is preparing to initiate a registration-directed trial of tipifarnib in at least 59 recurrent or metastatic patients with HRAS mutant head and neck squamous cell carcinomas later this year. Kura's pipeline also includes KO-947, an ERK inhibitor, currently in a Phase 1 dose-escalation trial, and KO-539, a menin-MLL inhibitor, currently in preclinical development. For additional information about Kura Oncology, 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 Oncology's product candidates, tipifarnib, KO-947 and KO-539, progress and expected timing of Kura Oncology's drug development programs and clinical trials, including the timing of initiation of the AIM-HN trial, 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 Oncology'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 Oncology may not obtain approval to market its product candidates, uncertainties associated with performing clinical trials, regulatory filings and applications, 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 Oncology assumes no obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.

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Corporate Communications

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Canale Communications