Chinook Therapeutics Closes Merger with Aduro Biotech and Completes $115 Million Private Placement Financing

Combined Company Will Have Over $275 Million in Operating Capital and Trade on Nasdaq under the Ticker Symbol “KDNY”

VANCOUVER, British Columbia and SEATTLE, Oct. 05, 2020 (GLOBE NEWSWIRE) -- Chinook Therapeutics, Inc. (NASDAQ: KDNY), a clinical-stage biotechnology company focused on the discovery, development and commercialization of precision medicines for kidney diseases, today announced the closing of its merger with Aduro Biotech, Inc. and $115 million private placement financing. The combined company, now known as Chinook Therapeutics, will commence trading October 6, 2020 on the Nasdaq Global Select Market under the trading symbol “KDNY.”

As previously announced, the $115 million private placement financing includes participation from new investors EcoR1 Capital, OrbiMed Advisors, funds managed by Rock Springs Capital, Fidelity Management and Research Company LLC, Avidity Partners, Surveyor Capital (a Citadel company), Ally Bridge Group, Monashee Investment Management LLC, Northleaf Capital Partners, Janus Henderson Investors, Sphera Biotech and other top-tier healthcare investors. As part of the financing, Chinook’s existing investors, Versant Ventures, Apple Tree Partners and Samsara BioCapital, purchased $25 million in Chinook common stock on the same terms as the new investors. Effective as of the closing of the merger, Chinook has over $275 million in operating capital to advance its kidney disease programs.

“Chinook’s merger with Aduro and entry into the public market is a transformative event that will propel the development of our atrasentan, BION-1301 and CHK-336 programs, and drive forward our research and discovery programs for other rare, severe chronic kidney diseases with large unmet medical needs,” said Eric Dobmeier, president and chief executive officer of Chinook Therapeutics. “With a strong cash position, a promising pipeline and our dedication to treating patients with debilitating kidney diseases, we are well positioned to achieve value-generating milestones and build a leading company in the kidney disease space.”

Chinook will focus on advancing its product candidates for kidney disease, including:

• Planned Phase 3 and Phase 2 trials of atrasentan, an investigational selective endothelin receptor antagonist, in development for the treatment of IgA nephropathy and other primary glomerular diseases;
• An ongoing Phase 1b and future clinical trials of BION-1301, an investigational humanized monoclonal antibody that blocks APRIL binding to both the BCMA and TACI receptors, in development for the treatment of IgA nephropathy;
• A planned Phase 1 trial of CHK-336, an investigational small molecule, in preclinical development for the treatment of an ultra-rare orphan kidney disease; and
• Advancement of additional research and discovery programs focused on the treatment of rare, severe chronic kidney diseases.

In connection with the closing of the merger, Aduro effected a 1:5 reverse split of its common stock. Post-merger and post-reverse split, Chinook has approximately 42 million shares of common stock outstanding. Prior Chinook stockholders collectively own approximately 39.5% of the combined company, prior Aduro stockholders collectively own approximately 39.9% of the combined company and investors in the Chinook private placement financing collectively own approximately 20.6% of the combined company.