Aduro Biotech Reports First Quarter 2017 Financial Results

Ten Product Candidates Advancing with $356 Million in Total Cash

BERKELEY, Calif., May 2, 2017 – Aduro Biotech, Inc. (NASDAQ: ADRO) today reported financial results for the first quarter ended March 31, 2017. Net loss for the first quarter of 2017 was $21.8 million, or $0.32 per share, compared to a net loss of $28.8 million, or $0.45 per share for the same period in 2016.  

Cash, cash equivalents and marketable securities totaled $356.0 million at March 31, 2017, compared to $361.9 million at December 31, 2016.  

“This will be an important year for Aduro, as we generate data in our ongoing ADU-S100/STING monotherapy trial and our planned Phase 2 trial in mesothelioma, as well as look for data from Janssen’s Phase 1 trials in lung and prostate cancers evaluating LADD therapeutic candidates,” said Stephen T. Isaacs, chairman, president and chief executive officer of Aduro. “We also plan to advance our STING program into additional clinical studies in collaboration with Novartis, and the first antibody from our B-select platform, the novel anti-APRIL antibody, is expected to be cleared for clinical testing this year. With ten product candidates in our diversified portfolio and a healthy balance sheet, we are in a strong position to continue to advance our pipeline and build a leading immunotherapy company.”

Key Recent Accomplishments

Anticipated 2017 Milestones

First Quarter 2017 Financial Results

Revenue for the first quarter of 2017 was $3.8 million, compared to $4.0 million for the same period in 2016. The revenue recognized in both quarters primarily relates to deferred upfront payments under the Novartis collaboration agreement.  In addition, revenue in the first quarter of 2016 included reimbursed research services of $0.2 million.

Research and development expenses were $20.6 million for the first quarter of 2017, compared to $20.9 million for the same period in 2016. Research and development expenses incurred in the first quarter of 2016 included GVAX Pancreas manufacturing and pancreatic cancer clinical trial expenses, which did not occur in 2017. The decrease in expenses was partially offset by increased costs to manufacture our B-select antibodies and increased research and development expenses for the STING platform, as well as higher personnel and facility related costs in first quarter of 2017.

General and administrative expenses were $8.3 million for the first quarter of 2017, compared to $9.0 million for the same period in 2016.  This decrease was primarily due to lower consulting and professional fees.

Income tax benefit was $2.8 million for the first quarter of 2017, compared to a provision for income taxes of $3.2 million for the same period in 2016. The income tax benefit recorded for the first quarter of 2017 was due to the current benefit of federal income taxes paid in 2016.

About Aduro

Aduro Biotech, Inc. is an immunotherapy company focused on the discovery, development and commercialization of therapies that transform the treatment of challenging diseases. Aduro's technology platforms, which are designed to harness the body's natural immune system, are being investigated in cancer indications and have the potential to expand into autoimmune and infectious diseases. Aduro's LADD technology platform is based on proprietary attenuated strains of Listeria that have been engineered to express tumor-associated antigens to induce specific and targeted immune responses. This platform is being developed as a treatment for multiple indications, including mesothelioma, ovarian, lung and prostate cancers. Additionally, a personalized form of LADD, or pLADD, is being developed utilizing tumor neoantigens that are specific to an individual patient’s tumor. Aduro's STING Pathway Activator platform is designed to activate the STING receptor in immune cells, resulting in a potent tumor-specific immune response. ADU-S100 is the first STING Pathway Activator compound to enter the clinic and is currently being evaluated in a Phase 1 study in patients with cutaneously accessible metastatic solid tumors or lymphomas. Aduro’s B-select monoclonal antibody platform includes a number of immune modulating assets in research and preclinical development. Aduro is collaborating with leading global pharmaceutical companies to expand its products and technology platforms. For more information, please visit www.aduro.com.

Cautionary Note on Forward-Looking Statements

This press release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding our intentions or current expectations concerning, among other things, the potential for our technology, plans, timing and the availability of results of our clinical trials and those of our collaborators, and the potential for eventual regulatory approval of our product candidates. In some cases you can identify these statements by forward-looking words such as “may,” “will,” “continue,” “anticipate,” “intend,” “could,” “project,” “expect” or the negative or plural of these words or similar expressions.  Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including, but not limited to, our history of net operating losses and uncertainty regarding our ability to achieve profitability, our ability to develop and commercialize our product candidates, our ability to use and expand our technology platforms to build a pipeline of product candidates, our ability to obtain and maintain regulatory approval of our product candidates, our ability to operate in a competitive industry and compete successfully against competitors that have greater resources than we do, our reliance on third parties, and our ability to obtain and adequately protect intellectual property rights for our product candidates.  We discuss many of these risks in greater detail under the heading “Risk Factors” contained in our quarterly report on Form 10-Q for the quarter ended March 31, 2017, to be filed with the Securities and Exchange Commission. Forward-looking statements are not guarantees of future performance, and our actual results of operations, financial condition and liquidity, and the development of the industry in which we operate, may differ materially from the forward-looking statements contained in this press release. Any forward-looking statements that we make in this press release speak only as of the date of this press release. We assume no obligation to update our forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release.

ADURO BIOTECH, INC.

Condensed Consolidated Statements of Operations

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ADURO BIOTECH, INC.

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